Airworthiness Directives; BAE Systems (Operations) Limited (Jetstream) Model 4101 Airplanes, 35089-35092 [E8-13919]
Download as PDF
<![CDATA[
35089
Proposed Rules
Federal Register
Vol. 73, No. 120
Friday, June 20, 2008
This section of the FEDERAL REGISTER
contains notices to the public of the proposed
issuance of rules and regulations. The
purpose of these notices is to give interested
persons an opportunity to participate in the
rule making prior to the adoption of the final
rules.
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2008–0644; Directorate
Identifier 2007–NM–321–AD]
Examining the AD Docket
RIN 2120–AA64
Airworthiness Directives; BAE
Systems (Operations) Limited
(Jetstream) Model 4101 Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking
(NPRM).
sroberts on PROD1PC70 with PROPOSALS
AGENCY:
SUMMARY: The FAA proposes to
supersede an existing airworthiness
directive (AD) that applies to all BAE
Systems (Operations) Limited
(Jetstream) Model 4101 airplanes. The
existing AD currently requires repetitive
tests for free movement of the capsule/
bearing of the nose landing gear (NLG),
and related investigative and corrective
actions. This proposed AD would
require a modified test for free
movement of the capsule/bearing of the
NLG at reduced repeat intervals, and
replacement of the NLG assembly with
a modified assembly. This proposed AD
results from additional reports of the
NLG failing to extend fully on an
airplane that had been inspected in
accordance with AD 2004–14–07. We
are proposing this AD to prevent failure
of the NLG to extend fully, which could
result in reduced controllability of the
airplane during landing.
DATES: We must receive comments on
this proposed AD by July 21, 2008.
ADDRESSES: You may send comments by
any of the following methods:
• Federal eRulemaking Portal: Go to
https://www.regulations.gov. Follow the
instructions for submitting comments.
• Fax: 202–493–2251.
• Mail: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
VerDate Aug<31>2005
16:17 Jun 19, 2008
Jkt 214001
W12–140, 1200 New Jersey Avenue, SE.,
Washington, DC 20590.
• Hand Delivery: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue, SE.,
Washington, DC 20590, between 9 a.m.
and 5 p.m., Monday through Friday,
except Federal holidays.
For service information identified in
this AD, contact British Aerospace
Regional Aircraft American Support,
13850 Mclearen Road, Herndon,
Virginia 20171.
You may examine the AD docket on
the Internet at https://
www.regulations.gov; or in person at the
Docket Management Facility between 9
a.m. and 5 p.m., Monday through
Friday, except Federal holidays. The AD
docket contains this proposed AD, the
regulatory evaluation, any comments
received, and other information. The
street address for the Docket Office
(telephone 800–647–5527) is in the
ADDRESSES section. Comments will be
available in the AD docket shortly after
receipt.
FOR FURTHER INFORMATION CONTACT:
Todd Thompson, Aerospace Engineer,
International Branch, ANM–116,
Transport Airplane Directorate, FAA,
1601 Lind Avenue, SW., Renton,
Washington 98057–3356; telephone
(425) 227–1175; fax (425) 227–1149.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written
relevant data, views, or arguments about
this proposed AD. Send your comments
to an address listed under the
ADDRESSES section. Include ‘‘Docket No.
FAA–2008–0644; Directorate Identifier
2007–NM–321–AD’’ at the beginning of
your comments. We specifically invite
comments on the overall regulatory,
economic, environmental, and energy
aspects of this proposed AD. We will
consider all comments received by the
closing date and may amend this
proposed AD because of those
comments.
We will post all comments we
receive, without change, to https://
www.regulations.gov, including any
personal information you provide. We
will also post a report summarizing each
substantive verbal contact we receive
about this proposed AD.
PO 00000
Frm 00001
Fmt 4702
Sfmt 4702
Discussion
On June 29, 2004, we issued AD
2004–14–07, amendment 39–13716 (69
FR 41413, July 9, 2004), for all BAE
Systems (Operations) Limited
(Jetstream) Model 4101 airplanes. That
AD requires a test for free movement of
the capsule/bearing of the nose landing
gear (NLG), and related investigative,
significant, and corrective actions. That
AD resulted from incidents in which the
NLG did not fully extend, necessitating
an emergency landing. We issued that
AD to prevent failure of the NLG to
extend fully, which could result in
reduced controllability of the airplane
during landing.
Actions Since Existing AD Was Issued
Since we issued AD 2004–14–07, we
have received additional reports of the
NLG failing to extend fully on an
airplane that had been inspected in
accordance with AD 2004–14–07. Initial
investigations suggest that high levels of
friction can develop in the upper and
lower sliding bearings, causing the
shortening mechanism capsule of the
NLG to bind, which prevents the NLG
from extending fully. The high friction
is caused by dirt contamination of the
grease, along with wear in the
composite material bearings. The
manufacturer of the NLG has developed
a NLG assembly that incorporates new
aluminum bearings that have improved
corrosion protection, and a new
lubrication fitting between the bearings
that allows clean grease to be applied
without the need to remove the capsule
exposing it to contamination.
Relevant Service Information
BAE Systems (Operations) Limited
has issued Service Bulletin J41–A32–
082, Revision 3, dated March 30, 2007.
(We referred to Revision 1, dated
February 20, 2004, of BAE Systems
(Operations) Limited Alert Service
Bulletin J41–A32–082 in AD 2004–14–
07 as the applicable source of service
information for doing the actions
required in that AD.) The procedures
described in this service bulletin are
essentially the same as those described
in Revision 1; however, Revision 3 also
describes procedures for cleaning and
re-lubricating the NLG shortening
mechanism capsule. In addition,
Revision 3 also specifies reporting any
failures to the manufacturer. BAE
Systems (Operations) Limited Service
E:\FR\FM\20JNP1.SGM
20JNP1
35090
Federal Register / Vol. 73, No. 120 / Friday, June 20, 2008 / Proposed Rules
Bulletin J41–A32–082, Revision 3, refers
to APPH Service Bulletin AIR83586–32–
22, Revision 3, dated December 2006, as
an additional source of service
information for doing the actions
specified in BAE Systems (Operations)
Limited Service Bulletin J41–A32–082.
BAE Systems (Operations) Limited
has also issued Service Bulletin J41–32–
084, dated November 30, 2005. The
service bulletin describes procedures for
installing a modified NLG assembly,
which has new aluminum bearings with
improved corrosion protection, and a
new lubrication fitting between the
bearings to allow clean grease to be
applied without the need to remove the
capsule. In addition, the service bulletin
specifies inspecting the free movement
of the NLG capsule in accordance with
BAE Systems (Operations) Limited
Service Bulletin J41–A32–082. BAE
Systems (Operations) Limited Service
Bulletin J41–32–084 refers to APPH
Service Bulletin AIR83586–32–25, dated
October 2005, as an additional source of
service information for doing the actions
specified in BAE Systems (Operations)
Limited Service Bulletin J41–32–084.
Accomplishing the actions specified
in the service information is intended to
adequately address the unsafe
condition. The European Aviation
Safety Agency (EASA), which is the
Technical Agent for the Member States
of the European Community, mandated
the service information and issued
European airworthiness directive 2006–
0131, dated May 18, 2006, to ensure the
continued airworthiness of these
airplanes in Europe.
Explanation of British Airworthiness
Authority
Paragraph (a)(4) of the existing AD
(paragraph (f)(4) of this NPRM) specifies
making repairs using a method
approved by either the FAA or the Civil
Aviation Authority (CAA) (or its
delegated agent). The EASA has
assumed responsibility for the airplane
model subject to this AD. Therefore, we
have revised paragraph (f)(4) of this
NPRM to specify making repairs using
a method approved by the FAA, the
CAA (or its delegated agent), or the
EASA (or its delegated agent).
FAA’s Determination and Requirements
of the Proposed AD
These airplanes are manufactured in
the United Kingdom and are type
certificated for operation in the United
States under the provisions of section
21.29 of the Federal Aviation
Regulations (14 CFR 21.29) and the
applicable bilateral airworthiness
agreement. Pursuant to this bilateral
airworthiness agreement, EASA has
kept the FAA informed of the situation
described above. We have examined
EASA’s findings, evaluated all pertinent
information, and determined that AD
action is necessary for airplanes of this
type design that are certificated for
operation in the United States.
This proposed AD would supersede
AD 2004–14–07 and would retain the
requirements of the existing AD. This
proposed AD would also require
accomplishing the actions specified in
the service information described
previously.
Change to Existing AD
This proposed AD would retain the
requirements of AD 2004–14–07. Since
AD 2004–14–07 was issued, the AD
format has been revised, and certain
paragraphs have been rearranged. As a
result, the corresponding paragraph
identifiers have changed in this
proposed AD, as listed in the following
table:
REVISED PARAGRAPH IDENTIFIERS
Requirement in AD
2004–14–07
paragraph
paragraph
paragraph
paragraph
(a)
(b)
(c)
(d)
............
............
............
............
Corresponding
requirement in this
proposed AD
paragraph
paragraph
paragraph
paragraph
(f).
(g).
(h).
(l)
Costs of Compliance
The following table provides the
estimated costs for U.S. operators to
comply with this proposed AD.
ESTIMATED COSTS
Action
Average
labor rate
per hour
Work
hours
Testing for free movement of
the NLG capsule/bearing
(required by AD 2004–14–
07).
Cleaning, lubrication, and inspecting for free movement of the NLG capsule/
bearing (new proposed action).
NLG assembly replacement
sroberts on PROD1PC70 with PROPOSALS
Number of
U.S.-registered
airplanes
Fleet cost
$80
$0
$480, per cleaning, lubrication, and inspection cycle.
7
$3,360, per cleaning, lubrication, and inspection
cycle.
6
80
10
$490, per cleaning, lubrication, and inspection cycle.
7
$3,430, per cleaning, lubrication, and inspection
cycle
6
80
3,100
$3,580 .................................
7
$25,060.
Title 49 of the United States Code
specifies the FAA’s authority to issue
rules on aviation safety. Subtitle I,
Section 106, describes the authority of
the FAA Administrator. Subtitle VII,
Aviation Programs, describes in more
detail the scope of the Agency’s
authority.
We are issuing this rulemaking under
the authority described in Subtitle VII,
Part A, Subpart III, Section 44701,
‘‘General requirements.’’ Under that
section, Congress charges the FAA with
16:17 Jun 19, 2008
Cost per airplane
6
Authority for This Rulemaking
VerDate Aug<31>2005
Parts
Jkt 214001
promoting safe flight of civil aircraft in
air commerce by prescribing regulations
for practices, methods, and procedures
the Administrator finds necessary for
safety in air commerce. This regulation
is within the scope of that authority
because it addresses an unsafe condition
that is likely to exist or develop on
products identified in this rulemaking
action.
Regulatory Findings
We have determined that this
proposed AD would not have federalism
PO 00000
Frm 00002
Fmt 4702
Sfmt 4702
implications under Executive Order
13132. This proposed AD would not
have a substantial direct effect on the
States, on the relationship between the
national Government and the States, or
on the distribution of power and
responsibilities among the various
levels of government.
For the reasons discussed above, I
certify that the proposed regulation:
1. Is not a ‘‘significant regulatory
action’’ under Executive Order 12866;
E:\FR\FM\20JNP1.SGM
20JNP1
Federal Register / Vol. 73, No. 120 / Friday, June 20, 2008 / Proposed Rules
2. Is not a ‘‘significant rule’’ under the
DOT Regulatory Policies and Procedures
(44 FR 11034, February 26, 1979); and
3. Will not have a significant
economic impact, positive or negative,
on a substantial number of small entities
under the criteria of the Regulatory
Flexibility Act.
We prepared a regulatory evaluation
of the estimated costs to comply with
this proposed AD and placed it in the
AD docket. See the ADDRESSES section
for a location to examine the regulatory
evaluation.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Safety.
The Proposed Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA proposes to amend 14 CFR part
39 as follows:
PART 39—AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
2. The Federal Aviation
Administration (FAA) amends § 39.13
by removing amendment 39–13716 (69
FR 41413, July 9, 2004) and adding the
following new airworthiness directive
(AD):
BAE Systems (Operations) Limited
(Formerly British Aerospace Regional
Aircraft): Docket No. FAA–2008–0644;
Directorate Identifier 2007–NM–321–AD.
Comments Due Date
(a) The FAA must receive comments on
this AD action by July 21, 2008.
Affected ADs
(b) This AD supersedes AD 2004–14–07.
sroberts on PROD1PC70 with PROPOSALS
Applicability
(c) This AD applies to all BAE Systems
(Operations) Limited Model Jetstream 4101
airplanes, certificated in any category.
Unsafe Condition
(d) This AD results from additional reports
of the NLG failing to extend fully on an
airplane that had been inspected in
accordance with AD 2004–14–07. We are
issuing this AD to prevent failure of the NLG
to extend fully, which could result in
reduced controllability of the airplane during
landing.
Compliance
(e) You are responsible for having the
actions required by this AD performed within
the compliance times specified, unless the
actions have already been done.
VerDate Aug<31>2005
16:27 Jun 19, 2008
Jkt 214001
Restatement of the Requirements of AD
2004–14–07
Service Bulletin Reference and Clarifications
(f) The term ‘‘service bulletin,’’ as used in
this AD, means BAE Systems (Operations)
Limited Alert Service Bulletin J41–A32–082,
Revision 1, dated February 20, 2004; and the
Accomplishment Instructions and the flow
chart provided in paragraph 1.N. of BAE
Systems (Operations) Limited Service
Bulletin J41–A32–082, Revision 3, dated
March 30, 2007. After the effective date of
this AD, only Revision 3 of the service
bulletin may be used.
(1) The term ‘‘flow chart,’’ as used in this
AD, means the flow chart following
paragraph 1.M. of BAE Systems (Operations)
Limited Alert Service Bulletin J41–A32–082,
Revision 1; or following paragraph 1.N. of
BAE Systems (Operations) Limited Service
Bulletin J41–A32–082, Revision 3.
(2) BAE Systems (Operations) Limited
Alert Service Bulletin J41–A32–082, Revision
1, refers to APPH Service Bulletin AIR83586–
32–22, Revision 1, dated February 2004, as
an additional source of service information
for accomplishing the actions in the BAE
Systems (Operations) Limited service
bulletin. BAE Systems (Operations) Limited
Alert Service Bulletin J41–J32–082, Revision
3, refers to APPH Service Bulletin AIR83586–
32–22, Revision 3, dated December 2006, as
an additional source of service information
for accomplishing the actions in the BAE
Systems (Operations) Limited service
bulletin.
(3) Actions accomplished before the
effective date of this AD per the
Accomplishment Instructions of BAE
Systems (Operations) Limited Alert Service
Bulletin J41–A32–082, dated February 11,
2004; Revision 1, dated February 20, 2004; or
Revision 2, dated November 25, 2005; are
considered acceptable for the corresponding
actions required by this AD. (The original
issue of BAE Systems (Operations) Limited
Alert Service Bulletin J41–A32–082 refers to
the original issue of APPH Service Bulletin
AIR83586–32–22, dated February 2004, as an
additional source of service information for
accomplishing the actions in the BAE
Systems (Operations) Limited service
bulletin.)
(4) Where BAE Systems (Operations)
Limited Alert Service Bulletin J41–A32–082,
Revision 1; BAE Systems (Operations)
Limited Alert Service Bulletin J41–A32–082,
Revision 3; and APPH Service Bulletin
AIR83586–32–22, Revision 1; specify to
contact BAE Systems or APPH for repair
instructions: Before further flight, repair per
a method approved by the Manager,
International Branch, ANM–116, FAA,
Transport Airplane Directorate; the Civil
Aviation Authority (CAA) (or its delegated
agent); or EASA (or its delegated agent).
(5) Where the flow chart in BAE Systems
(Operations) Limited Alert Service Bulletin
J41–A32–082, Revision 1; or BAE Systems
(Operations) Limited Alert Service Bulletin
J41–A32–082, Revision 3; specifies ‘‘flying
hours,’’ for the purposes of this AD, this
means ‘‘flight hours.’’
(6) Where BAE Systems (Operations)
Limited Alert Service Bulletin J41–A32–082,
PO 00000
Frm 00003
Fmt 4702
Sfmt 4702
35091
Revision 1; or BAE Systems (Operations)
Limited Alert Service Bulletin J41–A32–082,
Revision 3; specifies to complete a reporting
form and return it to the manufacturer, this
AD does not require that action.
(7) BAE Systems (Operations) Limited
Alert Service Bulletin J41–A32–084, dated
November 30, 2005, refers to APPH Service
Bulletin AIR83586–32–25, dated October
2005, as an additional source of service
information for accomplishing the actions in
the BAE Systems (Operations) Limited
service bulletin.
Initial Test
(g) Within 300 flight cycles or 30 days after
August 13, 2004 (the effective date of AD
2004–14–07), whichever occurs first: Perform
a test for free movement of the NLG capsule/
bearing, as specified in the flow chart of the
service bulletin. Do all of the actions per the
Accomplishment Instructions of the service
bulletin.
Note 1: As specified in the flow chart in
the service bulletin, only the actions in
paragraph 2.A. (Part 1) of the
Accomplishment Instructions of APPH
Service Bulletin AIR83586–32–22, Revision
1, dated February 2004, are required by
paragraph (f) of this AD.
Related Investigative, Significant, and
Corrective Actions
(h) Perform related investigative,
significant, and corrective actions as
specified in the flow chart of the service
bulletin, at the compliance times specified in
the flow chart of the service bulletin. Do all
of the actions per the Accomplishment
Instructions of the service bulletin, except as
provided by paragraph (f)(4) of this AD.
During any test, if the movement of the
capsule/bearing is restricted, the applicable
corrective actions must be accomplished
before further flight.
Parts Installation
(i) As of August 13, 2004, no person may
install a NLG on any airplane unless it has
been inspected in accordance with the
requirements of paragraphs (g) and (h) of this
AD.
New Requirements of This AD
Repetitive Cleanings, Lubrications, and
Inspections for Free Movement of the NLG
Capsule
(j) Within 400 flight hours after the
effective date of this AD, or within 800 flight
hours after the last test done in accordance
with paragraph (g) of this AD, whichever is
later, but not exceeding 3,000 flight hours
after the last test done in accordance with
paragraph (g) of this AD; and before further
flight after each scheduled or unscheduled
NLG replacement: Clean, lubricate, and
inspect for free movement of the NLG
capsule/bearing in accordance with the
service bulletin.
(1) For NLG capsules that have adequate
free movement: At the applicable interval
specified in paragraphs (j)(1)(i) and (j)(1)(ii)
of this AD, repeat the cleaning, lubrication,
and inspection for free movement of the NLG
capsule/bearing in accordance with the
service bulletin.
E:\FR\FM\20JNP1.SGM
20JNP1
35092
Federal Register / Vol. 73, No. 120 / Friday, June 20, 2008 / Proposed Rules
(i) For airplanes on which the modification
specified in BAe Systems (Operations)
Limited Service Bulletin J41–A32–084
(Modification JM41670), dated November 30,
2005, has not been accomplished, repeat the
actions specified in paragraph (j)(1) of this
AD at intervals not to exceed 800 flight hours
after the last inspection done in accordance
with paragraph (j) of this AD.
(ii) For airplanes on which the
modification specified in BAe Systems
(Operations) Limited Service Bulletin J41–
A32–084 (Modification JM41670), dated
November 30, 2005, has been accomplished,
repeat the actions specified in paragraph
(j)(1) of this AD at intervals not to exceed
3,000 flight hours after the last inspection
done in accordance with paragraph (j) of this
AD.
(2) For NLG capsules that do not have
adequate free movement: Before further
flight, replace the NLG assembly with a
serviceable assembly in accordance with the
service bulletin. Thereafter, repeat the
actions specified in paragraph (j) of this AD
at the applicable interval specified in
paragraph (j)(1) of this AD.
Replace the NLG Assembly With a Modified
NLG Assembly
(k) Within 48 months after the effective
date of this AD: Replace the NLG assembly
with a modified assembly, in accordance
with BAE Systems (Operations) Limited
Service Bulletin J41–32–084, dated
November 30, 2005. Thereafter, repeat the
actions specified in paragraph (j) of this AD
at the applicable interval specified in
paragraph (j)(1) of this AD.
Parts Installation
(l) As of the effective date of this AD, no
person may install a NLG on any airplane
unless it has been inspected in accordance
with paragraph (j) of this AD.
sroberts on PROD1PC70 with PROPOSALS
Related Information
(n) European Aviation Safety Agency
airworthiness directive 2006–0131, dated
May 18, 2006, also addresses the subject of
this AD.
Issued in Renton, Washington, on June 9,
2008.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. E8–13919 Filed 6–19–08; 8:45 am]
VerDate Aug<31>2005
16:17 Jun 19, 2008
Jkt 214001
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2008–0645; Directorate
Identifier 2007–NM–358–AD]
RIN 2120–AA64
Airworthiness Directives; Boeing
Model 707 Airplanes and Model 720
and 720B Series Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
We propose to adopt a new
airworthiness directive (AD) for all
Boeing Model 707 airplanes and Model
720 and 720B series airplanes. This
proposed AD would require performing
an operational test of the engine fuel
suction feed of the fuel system, and
other related testing if necessary. This
proposed AD results from a report of inservice occurrences of loss of fuel
system suction feed capability, followed
by total loss of pressure of the fuel feed
system. We are proposing this AD to
detect and correct failure of the engine
fuel suction feed of the fuel system,
which could result in multi-engine
flameout, inability to restart the engines,
and consequent forced landing of the
airplane.
SUMMARY:
We must receive comments on
this proposed AD by August 4, 2008.
ADDRESSES: You may send comments by
any of the following methods:
• Federal eRulemaking Portal: Go to
https://www.regulations.gov. Follow the
instructions for submitting comments.
• Fax: 202–493–2251.
• Mail: U.S. Department of
Transportation, Docket Operations,
M–30, West Building Ground Floor,
Room W12–140, 1200 New Jersey
Avenue, SE., Washington, DC 20590.
• Hand Delivery: U.S. Department of
Transportation, Docket Operations,
M–30, West Building Ground Floor,
Room W12–140, 1200 New Jersey
Avenue, SE., Washington, DC 20590,
between 9 a.m. and 5 p.m., Monday
through Friday, except Federal holidays.
For service information identified in
this AD, contact Boeing Commercial
Airplanes, P.O. Box 3707, Seattle,
Washington 98124–2207.
DATES:
Alternative Methods of Compliance
(AMOCs)
(m)(1) The Manager, International Branch,
ANM–116, Transport Airplane Directorate,
FAA, has the authority to approve AMOCs
for this AD, if requested in accordance with
the procedures found in 14 CFR 39.19.
(2) To request a different method of
compliance or a different compliance time
for this AD, follow the procedures in 14 CFR
39.19. Before using any approved AMOC on
any airplane to which the AMOC applies,
notify your appropriate principal inspector
(PI) in the FAA Flight Standards District
Office (FSDO), or lacking a PI, your local
FSDO.
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Examining the AD Docket
You may examine the AD docket on
the Internet at https://
www.regulations.gov; or in person at the
Docket Management Facility between 9
a.m. and 5 p.m., Monday through
PO 00000
Frm 00004
Fmt 4702
Sfmt 4702
Friday, except Federal holidays. The AD
docket contains this proposed AD, the
regulatory evaluation, any comments
received, and other information. The
street address for the Docket Office
(telephone 800–647–5527) is in the
ADDRESSES section. Comments will be
available in the AD docket shortly after
receipt.
FOR FURTHER INFORMATION CONTACT: Sue
Lucier, Aerospace Engineer, Propulsion
Branch, ANM–140S, FAA, Seattle
Aircraft Certification Office, 1601 Lind
Avenue SW., Renton, Washington
98057–3356; telephone (425) 917–6438;
fax (425) 917–6590.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written
relevant data, views, or arguments about
this proposed AD. Send your comments
to an address listed under the
ADDRESSES section. Include ‘‘Docket No.
FAA–2008–0645; Directorate Identifier
2007–NM–358–AD’’ at the beginning of
your comments. We specifically invite
comments on the overall regulatory,
economic, environmental, and energy
aspects of this proposed AD. We will
consider all comments received by the
closing date and may amend this
proposed AD because of those
comments.
We will post all comments we
receive, without change, to https://
www.regulations.gov, including any
personal information you provide. We
will also post a report summarizing each
substantive verbal contact we receive
about this proposed AD.
Discussion
We have received a report of inservice occurrences of loss of fuel
system suction feed capability, followed
by total loss of pressure of the fuel feed
system. This report prompted us to
review the service history of all Boeing
airplane models, and we found
instances of loose and leaking fuel line
fittings. This condition, if not corrected,
could result in multi-engine flameout,
inability to restart the engines, and
consequent forced landing of the
airplane.
Explanation of Relevant Service
Information
We have reviewed Boeing Alert
Service Bulletin A3527, dated
November 7, 2007. The service bulletin
describes procedures for performing an
operational test of the engine fuel
suction feed of the fuel system, and
other related testing if necessary. The
other related testing includes doing a
vacuum test on the applicable engine for
leakage if an engine’s N1, N2, or fuel-
E:\FR\FM\20JNP1.SGM
20JNP1
]]>Agencies
[Federal Register Volume 73, Number 120 (Friday, June 20, 2008)]
[Proposed Rules]
[Pages 35089-35092]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-13919]
========================================================================
Proposed Rules
Federal Register
________________________________________________________________________
This section of the FEDERAL REGISTER contains notices to the public of
the proposed issuance of rules and regulations. The purpose of these
notices is to give interested persons an opportunity to participate in
the rule making prior to the adoption of the final rules.
========================================================================
Federal Register / Vol. 73, No. 120 / Friday, June 20, 2008 /
Proposed Rules
[[Page 35089]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2008-0644; Directorate Identifier 2007-NM-321-AD]
RIN 2120-AA64
Airworthiness Directives; BAE Systems (Operations) Limited
(Jetstream) Model 4101 Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
SUMMARY: The FAA proposes to supersede an existing airworthiness
directive (AD) that applies to all BAE Systems (Operations) Limited
(Jetstream) Model 4101 airplanes. The existing AD currently requires
repetitive tests for free movement of the capsule/bearing of the nose
landing gear (NLG), and related investigative and corrective actions.
This proposed AD would require a modified test for free movement of the
capsule/bearing of the NLG at reduced repeat intervals, and replacement
of the NLG assembly with a modified assembly. This proposed AD results
from additional reports of the NLG failing to extend fully on an
airplane that had been inspected in accordance with AD 2004-14-07. We
are proposing this AD to prevent failure of the NLG to extend fully,
which could result in reduced controllability of the airplane during
landing.
DATES: We must receive comments on this proposed AD by July 21, 2008.
ADDRESSES: You may send comments by any of the following methods:
Federal eRulemaking Portal: Go to https://
www.regulations.gov. Follow the instructions for submitting comments.
Fax: 202-493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue, SE., Washington, DC 20590.
Hand Delivery: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays.
For service information identified in this AD, contact British
Aerospace Regional Aircraft American Support, 13850 Mclearen Road,
Herndon, Virginia 20171.
Examining the AD Docket
You may examine the AD docket on the Internet at https://
www.regulations.gov; or in person at the Docket Management Facility
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The AD docket contains this proposed AD, the regulatory
evaluation, any comments received, and other information. The street
address for the Docket Office (telephone 800-647-5527) is in the
ADDRESSES section. Comments will be available in the AD docket shortly
after receipt.
FOR FURTHER INFORMATION CONTACT: Todd Thompson, Aerospace Engineer,
International Branch, ANM-116, Transport Airplane Directorate, FAA,
1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425)
227-1175; fax (425) 227-1149.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written relevant data, views, or
arguments about this proposed AD. Send your comments to an address
listed under the ADDRESSES section. Include ``Docket No. FAA-2008-0644;
Directorate Identifier 2007-NM-321-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of this proposed AD. We
will consider all comments received by the closing date and may amend
this proposed AD because of those comments.
We will post all comments we receive, without change, to https://
www.regulations.gov, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact we
receive about this proposed AD.
Discussion
On June 29, 2004, we issued AD 2004-14-07, amendment 39-13716 (69
FR 41413, July 9, 2004), for all BAE Systems (Operations) Limited
(Jetstream) Model 4101 airplanes. That AD requires a test for free
movement of the capsule/bearing of the nose landing gear (NLG), and
related investigative, significant, and corrective actions. That AD
resulted from incidents in which the NLG did not fully extend,
necessitating an emergency landing. We issued that AD to prevent
failure of the NLG to extend fully, which could result in reduced
controllability of the airplane during landing.
Actions Since Existing AD Was Issued
Since we issued AD 2004-14-07, we have received additional reports
of the NLG failing to extend fully on an airplane that had been
inspected in accordance with AD 2004-14-07. Initial investigations
suggest that high levels of friction can develop in the upper and lower
sliding bearings, causing the shortening mechanism capsule of the NLG
to bind, which prevents the NLG from extending fully. The high friction
is caused by dirt contamination of the grease, along with wear in the
composite material bearings. The manufacturer of the NLG has developed
a NLG assembly that incorporates new aluminum bearings that have
improved corrosion protection, and a new lubrication fitting between
the bearings that allows clean grease to be applied without the need to
remove the capsule exposing it to contamination.
Relevant Service Information
BAE Systems (Operations) Limited has issued Service Bulletin J41-
A32-082, Revision 3, dated March 30, 2007. (We referred to Revision 1,
dated February 20, 2004, of BAE Systems (Operations) Limited Alert
Service Bulletin J41-A32-082 in AD 2004-14-07 as the applicable source
of service information for doing the actions required in that AD.) The
procedures described in this service bulletin are essentially the same
as those described in Revision 1; however, Revision 3 also describes
procedures for cleaning and re-lubricating the NLG shortening mechanism
capsule. In addition, Revision 3 also specifies reporting any failures
to the manufacturer. BAE Systems (Operations) Limited Service
[[Page 35090]]
Bulletin J41-A32-082, Revision 3, refers to APPH Service Bulletin
AIR83586-32-22, Revision 3, dated December 2006, as an additional
source of service information for doing the actions specified in BAE
Systems (Operations) Limited Service Bulletin J41-A32-082.
BAE Systems (Operations) Limited has also issued Service Bulletin
J41-32-084, dated November 30, 2005. The service bulletin describes
procedures for installing a modified NLG assembly, which has new
aluminum bearings with improved corrosion protection, and a new
lubrication fitting between the bearings to allow clean grease to be
applied without the need to remove the capsule. In addition, the
service bulletin specifies inspecting the free movement of the NLG
capsule in accordance with BAE Systems (Operations) Limited Service
Bulletin J41-A32-082. BAE Systems (Operations) Limited Service Bulletin
J41-32-084 refers to APPH Service Bulletin AIR83586-32-25, dated
October 2005, as an additional source of service information for doing
the actions specified in BAE Systems (Operations) Limited Service
Bulletin J41-32-084.
Accomplishing the actions specified in the service information is
intended to adequately address the unsafe condition. The European
Aviation Safety Agency (EASA), which is the Technical Agent for the
Member States of the European Community, mandated the service
information and issued European airworthiness directive 2006-0131,
dated May 18, 2006, to ensure the continued airworthiness of these
airplanes in Europe.
Explanation of British Airworthiness Authority
Paragraph (a)(4) of the existing AD (paragraph (f)(4) of this NPRM)
specifies making repairs using a method approved by either the FAA or
the Civil Aviation Authority (CAA) (or its delegated agent). The EASA
has assumed responsibility for the airplane model subject to this AD.
Therefore, we have revised paragraph (f)(4) of this NPRM to specify
making repairs using a method approved by the FAA, the CAA (or its
delegated agent), or the EASA (or its delegated agent).
FAA's Determination and Requirements of the Proposed AD
These airplanes are manufactured in the United Kingdom and are type
certificated for operation in the United States under the provisions of
section 21.29 of the Federal Aviation Regulations (14 CFR 21.29) and
the applicable bilateral airworthiness agreement. Pursuant to this
bilateral airworthiness agreement, EASA has kept the FAA informed of
the situation described above. We have examined EASA's findings,
evaluated all pertinent information, and determined that AD action is
necessary for airplanes of this type design that are certificated for
operation in the United States.
This proposed AD would supersede AD 2004-14-07 and would retain the
requirements of the existing AD. This proposed AD would also require
accomplishing the actions specified in the service information
described previously.
Change to Existing AD
This proposed AD would retain the requirements of AD 2004-14-07.
Since AD 2004-14-07 was issued, the AD format has been revised, and
certain paragraphs have been rearranged. As a result, the corresponding
paragraph identifiers have changed in this proposed AD, as listed in
the following table:
Revised Paragraph Identifiers
------------------------------------------------------------------------
Corresponding requirement
Requirement in AD 2004-14-07 in this proposed AD
------------------------------------------------------------------------
paragraph (a)............................. paragraph (f).
paragraph (b)............................. paragraph (g).
paragraph (c)............................. paragraph (h).
paragraph (d)............................. paragraph (l)
------------------------------------------------------------------------
Costs of Compliance
The following table provides the estimated costs for U.S. operators
to comply with this proposed AD.
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Average Number of U.S.-
Action Work labor rate Parts Cost per registered Fleet cost
hours per hour airplane airplanes
----------------------------------------------------------------------------------------------------------------
Testing for free movement of 6 $80 $0 $480, per 7 $3,360, per
the NLG capsule/bearing cleaning, cleaning,
(required by AD 2004-14-07). lubrication, lubrication,
and inspection and inspection
cycle. cycle.
Cleaning, lubrication, and 6 80 10 $490, per 7 $3,430, per
inspecting for free movement cleaning, cleaning,
of the NLG capsule/bearing lubrication, lubrication,
(new proposed action). and inspection and inspection
cycle. cycle
NLG assembly replacement..... 6 80 3,100 $3,580......... 7 $25,060.
----------------------------------------------------------------------------------------------------------------
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, Section 106, describes the
authority of the FAA Administrator. Subtitle VII, Aviation Programs,
describes in more detail the scope of the Agency's authority.
We are issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701, ``General
requirements.'' Under that section, Congress charges the FAA with
promoting safe flight of civil aircraft in air commerce by prescribing
regulations for practices, methods, and procedures the Administrator
finds necessary for safety in air commerce. This regulation is within
the scope of that authority because it addresses an unsafe condition
that is likely to exist or develop on products identified in this
rulemaking action.
Regulatory Findings
We have determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would not
have a substantial direct effect on the States, on the relationship
between the national Government and the States, or on the distribution
of power and responsibilities among the various levels of government.
For the reasons discussed above, I certify that the proposed
regulation:
1. Is not a ``significant regulatory action'' under Executive Order
12866;
[[Page 35091]]
2. Is not a ``significant rule'' under the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979); and
3. Will not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.
We prepared a regulatory evaluation of the estimated costs to
comply with this proposed AD and placed it in the AD docket. See the
ADDRESSES section for a location to examine the regulatory evaluation.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Safety.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
2. The Federal Aviation Administration (FAA) amends Sec. 39.13 by
removing amendment 39-13716 (69 FR 41413, July 9, 2004) and adding the
following new airworthiness directive (AD):
BAE Systems (Operations) Limited (Formerly British Aerospace
Regional Aircraft): Docket No. FAA-2008-0644; Directorate Identifier
2007-NM-321-AD.
Comments Due Date
(a) The FAA must receive comments on this AD action by July 21,
2008.
Affected ADs
(b) This AD supersedes AD 2004-14-07.
Applicability
(c) This AD applies to all BAE Systems (Operations) Limited
Model Jetstream 4101 airplanes, certificated in any category.
Unsafe Condition
(d) This AD results from additional reports of the NLG failing
to extend fully on an airplane that had been inspected in accordance
with AD 2004-14-07. We are issuing this AD to prevent failure of the
NLG to extend fully, which could result in reduced controllability
of the airplane during landing.
Compliance
(e) You are responsible for having the actions required by this
AD performed within the compliance times specified, unless the
actions have already been done.
Restatement of the Requirements of AD 2004-14-07
Service Bulletin Reference and Clarifications
(f) The term ``service bulletin,'' as used in this AD, means BAE
Systems (Operations) Limited Alert Service Bulletin J41-A32-082,
Revision 1, dated February 20, 2004; and the Accomplishment
Instructions and the flow chart provided in paragraph 1.N. of BAE
Systems (Operations) Limited Service Bulletin J41-A32-082, Revision
3, dated March 30, 2007. After the effective date of this AD, only
Revision 3 of the service bulletin may be used.
(1) The term ``flow chart,'' as used in this AD, means the flow
chart following paragraph 1.M. of BAE Systems (Operations) Limited
Alert Service Bulletin J41-A32-082, Revision 1; or following
paragraph 1.N. of BAE Systems (Operations) Limited Service Bulletin
J41-A32-082, Revision 3.
(2) BAE Systems (Operations) Limited Alert Service Bulletin J41-
A32-082, Revision 1, refers to APPH Service Bulletin AIR83586-32-22,
Revision 1, dated February 2004, as an additional source of service
information for accomplishing the actions in the BAE Systems
(Operations) Limited service bulletin. BAE Systems (Operations)
Limited Alert Service Bulletin J41-J32-082, Revision 3, refers to
APPH Service Bulletin AIR83586-32-22, Revision 3, dated December
2006, as an additional source of service information for
accomplishing the actions in the BAE Systems (Operations) Limited
service bulletin.
(3) Actions accomplished before the effective date of this AD
per the Accomplishment Instructions of BAE Systems (Operations)
Limited Alert Service Bulletin J41-A32-082, dated February 11, 2004;
Revision 1, dated February 20, 2004; or Revision 2, dated November
25, 2005; are considered acceptable for the corresponding actions
required by this AD. (The original issue of BAE Systems (Operations)
Limited Alert Service Bulletin J41-A32-082 refers to the original
issue of APPH Service Bulletin AIR83586-32-22, dated February 2004,
as an additional source of service information for accomplishing the
actions in the BAE Systems (Operations) Limited service bulletin.)
(4) Where BAE Systems (Operations) Limited Alert Service
Bulletin J41-A32-082, Revision 1; BAE Systems (Operations) Limited
Alert Service Bulletin J41-A32-082, Revision 3; and APPH Service
Bulletin AIR83586-32-22, Revision 1; specify to contact BAE Systems
or APPH for repair instructions: Before further flight, repair per a
method approved by the Manager, International Branch, ANM-116, FAA,
Transport Airplane Directorate; the Civil Aviation Authority (CAA)
(or its delegated agent); or EASA (or its delegated agent).
(5) Where the flow chart in BAE Systems (Operations) Limited
Alert Service Bulletin J41-A32-082, Revision 1; or BAE Systems
(Operations) Limited Alert Service Bulletin J41-A32-082, Revision 3;
specifies ``flying hours,'' for the purposes of this AD, this means
``flight hours.''
(6) Where BAE Systems (Operations) Limited Alert Service
Bulletin J41-A32-082, Revision 1; or BAE Systems (Operations)
Limited Alert Service Bulletin J41-A32-082, Revision 3; specifies to
complete a reporting form and return it to the manufacturer, this AD
does not require that action.
(7) BAE Systems (Operations) Limited Alert Service Bulletin J41-
A32-084, dated November 30, 2005, refers to APPH Service Bulletin
AIR83586-32-25, dated October 2005, as an additional source of
service information for accomplishing the actions in the BAE Systems
(Operations) Limited service bulletin.
Initial Test
(g) Within 300 flight cycles or 30 days after August 13, 2004
(the effective date of AD 2004-14-07), whichever occurs first:
Perform a test for free movement of the NLG capsule/bearing, as
specified in the flow chart of the service bulletin. Do all of the
actions per the Accomplishment Instructions of the service bulletin.
Note 1: As specified in the flow chart in the service bulletin,
only the actions in paragraph 2.A. (Part 1) of the Accomplishment
Instructions of APPH Service Bulletin AIR83586-32-22, Revision 1,
dated February 2004, are required by paragraph (f) of this AD.
Related Investigative, Significant, and Corrective Actions
(h) Perform related investigative, significant, and corrective
actions as specified in the flow chart of the service bulletin, at
the compliance times specified in the flow chart of the service
bulletin. Do all of the actions per the Accomplishment Instructions
of the service bulletin, except as provided by paragraph (f)(4) of
this AD. During any test, if the movement of the capsule/bearing is
restricted, the applicable corrective actions must be accomplished
before further flight.
Parts Installation
(i) As of August 13, 2004, no person may install a NLG on any
airplane unless it has been inspected in accordance with the
requirements of paragraphs (g) and (h) of this AD.
New Requirements of This AD
Repetitive Cleanings, Lubrications, and Inspections for Free Movement
of the NLG Capsule
(j) Within 400 flight hours after the effective date of this AD,
or within 800 flight hours after the last test done in accordance
with paragraph (g) of this AD, whichever is later, but not exceeding
3,000 flight hours after the last test done in accordance with
paragraph (g) of this AD; and before further flight after each
scheduled or unscheduled NLG replacement: Clean, lubricate, and
inspect for free movement of the NLG capsule/bearing in accordance
with the service bulletin.
(1) For NLG capsules that have adequate free movement: At the
applicable interval specified in paragraphs (j)(1)(i) and (j)(1)(ii)
of this AD, repeat the cleaning, lubrication, and inspection for
free movement of the NLG capsule/bearing in accordance with the
service bulletin.
[[Page 35092]]
(i) For airplanes on which the modification specified in BAe
Systems (Operations) Limited Service Bulletin J41-A32-084
(Modification JM41670), dated November 30, 2005, has not been
accomplished, repeat the actions specified in paragraph (j)(1) of
this AD at intervals not to exceed 800 flight hours after the last
inspection done in accordance with paragraph (j) of this AD.
(ii) For airplanes on which the modification specified in BAe
Systems (Operations) Limited Service Bulletin J41-A32-084
(Modification JM41670), dated November 30, 2005, has been
accomplished, repeat the actions specified in paragraph (j)(1) of
this AD at intervals not to exceed 3,000 flight hours after the last
inspection done in accordance with paragraph (j) of this AD.
(2) For NLG capsules that do not have adequate free movement:
Before further flight, replace the NLG assembly with a serviceable
assembly in accordance with the service bulletin. Thereafter, repeat
the actions specified in paragraph (j) of this AD at the applicable
interval specified in paragraph (j)(1) of this AD.
Replace the NLG Assembly With a Modified NLG Assembly
(k) Within 48 months after the effective date of this AD:
Replace the NLG assembly with a modified assembly, in accordance
with BAE Systems (Operations) Limited Service Bulletin J41-32-084,
dated November 30, 2005. Thereafter, repeat the actions specified in
paragraph (j) of this AD at the applicable interval specified in
paragraph (j)(1) of this AD.
Parts Installation
(l) As of the effective date of this AD, no person may install a
NLG on any airplane unless it has been inspected in accordance with
paragraph (j) of this AD.
Alternative Methods of Compliance (AMOCs)
(m)(1) The Manager, International Branch, ANM-116, Transport
Airplane Directorate, FAA, has the authority to approve AMOCs for
this AD, if requested in accordance with the procedures found in 14
CFR 39.19.
(2) To request a different method of compliance or a different
compliance time for this AD, follow the procedures in 14 CFR 39.19.
Before using any approved AMOC on any airplane to which the AMOC
applies, notify your appropriate principal inspector (PI) in the FAA
Flight Standards District Office (FSDO), or lacking a PI, your local
FSDO.
Related Information
(n) European Aviation Safety Agency airworthiness directive
2006-0131, dated May 18, 2006, also addresses the subject of this
AD.
Issued in Renton, Washington, on June 9, 2008.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E8-13919 Filed 6-19-08; 8:45 am]
BILLING CODE 4910-13-P
