Airworthiness Directives; Bombardier Model DHC-8-102, -103, and -106 Airplanes, and DHC-8-200 and DHC-8-300 Series Airplanes, 30070-30072 [E6-8008]
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30070
Federal Register / Vol. 71, No. 101 / Thursday, May 25, 2006 / Proposed Rules
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2006–24867; Directorate
Identifier 2006–NM–064–AD]
RIN 2120–AA64
Airworthiness Directives; Bombardier
Model DHC–8–102, –103, and –106
Airplanes, and DHC–8–200 and DHC–
8–300 Series Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
SUMMARY: The FAA proposes to adopt a
new airworthiness directive (AD) for
certain Bombardier Model DHC–8–102,
–103, and –106 airplanes, and DHC–8–
200 and DHC–8–300 series airplanes.
This proposed AD would require
performing a one-time inspection for
non-conforming chain links of chain
assemblies of the elevator trim system
and gust lock system, and corrective
actions if necessary. This proposed AD
would also require temporary revisions
to the airplane flight manuals of the
affected airplanes, which describe
procedures for elevator trim checks.
This proposed AD results from several
reports of failure of the elevator trim
chain, due to hydrogen embrittlement.
We are proposing this AD to prevent
breakage of the elevator trim chain,
which would prevent the actual
position of the elevator trim tab from
being annunciated to the flightcrew.
Attempting to adjust the trim tab to the
full nose up or full nose down position
with a broken trim chain could cause
reduced control during airplane rotation
on the ground or a stall during flight.
DATES: We must receive comments on
this proposed AD by June 26, 2006.
ADDRESSES: Use one of the following
addresses to submit comments on this
proposed AD.
• DOT Docket Web site: Go to https://
dms.dot.gov and follow the instructions
for sending your comments
electronically.
• Government-wide rulemaking Web
site: Go to https://www.regulations.gov
and follow the instructions for sending
your comments electronically.
• Mail: Docket Management Facility,
U.S. Department of Transportation, 400
Seventh Street, SW., Nassif Building,
Room PL–401, Washington, DC 20590.
• Fax: (202) 493–2251.
• Hand Delivery: Room PL–401 on
the plaza level of the Nassif Building,
400 Seventh Street, SW., Washington,
DC, between 9 a.m. and 5 p.m., Monday
through Friday, except Federal holidays.
Contact Bombardier, Inc., Bombardier
Regional Aircraft Division, 123 Garratt
Boulevard, Downsview, Ontario M3K
1Y5, Canada, for service information
identified in this proposed AD.
FOR FURTHER INFORMATION CONTACT: Ezra
Sasson, Aerospace Engineer, Systems
and Flight Test Branch, ANE–172, FAA,
New York Aircraft Certification Office,
1600 Stewart Avenue, suite 410,
Westbury, New York 11590; telephone
(516) 228–7320; fax (516) 794–5531.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to submit any relevant
written data, views, or arguments
regarding this proposed AD. Send your
comments to an address listed in the
ADDRESSES section. Include the docket
number ‘‘FAA–2006–24867; Directorate
Identifier 2006–NM–064–AD’’ at the
beginning of your comments. We
specifically invite comments on the
overall regulatory, economic,
environmental, and energy aspects of
the proposed AD. We will consider all
comments received by the closing date
and may amend the proposed AD in
light of those comments.
We will post all comments we
receive, without change, to https://
dms.dot.gov, including any personal
information you provide. We will also
post a report summarizing each
substantive verbal contact with FAA
personnel concerning this proposed AD.
Using the search function of that Web
site, anyone can find and read the
comments in any of our dockets,
including the name of the individual
who sent the comment (or signed the
comment on behalf of an association,
business, labor union, etc.). You may
review the DOT’s complete Privacy Act
Statement in the Federal Register
published on April 11, 2000 (65 FR
19477–78), or you may visit https://
dms.dot.gov.
Examining the Docket
You may examine the AD docket on
the Internet at https://dms.dot.gov, or in
person at the Docket Management
Facility office between 9 a.m. and 5
p.m., Monday through Friday, except
Federal holidays. The Docket
Management Facility office (telephone
(800) 647–5227) is located on the plaza
level of the Nassif Building at the DOT
street address stated in the ADDRESSES
section. Comments will be available in
the AD docket shortly after the Docket
Management System receives them.
Discussion
Transport Canada Civil Aviation
(TCCA), which is the airworthiness
authority for Canada, notified us that an
unsafe condition may exist on certain
Bombardier Model DHC–8–102, –103,
and –106 airplanes, and DHC–8–200
and DHC–8–300 series airplanes. TCCA
has received reports of several failures
of the elevator trim chain, due to
cracking of certain chain links caused
by hydrogen embrittlement. This
condition, if not corrected, could result
in breakage of the elevator trim chain,
which would prevent the actual
position of the elevator trim tab from
being annunciated to the flightcrew.
Attempting to adjust the trim tab to the
full nose up or full nose down position
with a broken trim chain could cause
reduced control during airplane rotation
on the ground or a stall during flight.
Relevant Service Information
Bombardier has issued temporary
amendments (TA) to the product
support manuals (PSM) of the airplane
flight manuals (AFM) of the affected
airplanes, as shown in the following
table. The TAs describe procedures for
visual trim checks to verify that
elevators are in acceptable positions
relative to elevator trim wheel settings.
Operators should note that the suffixes
‘‘NS,’’ ‘‘S,’’ and ‘‘HT,’’ only appear on
the labels of certain AFMs and do not
indicate separate airplane models. For
example, a Model 102NS airplane is a
Model 102 airplane.
TEMPORARY AMENDMENTS (TAS)
jlentini on PROD1PC65 with PROPOSAL
Airplane model/AFM No.
PSM
102, 103, and 106 .............................................................................................................
102NS, 103NS, and 106NS ..............................................................................................
201 .....................................................................................................................................
202 .....................................................................................................................................
201S and 202S ..................................................................................................................
VerDate Aug<31>2005
15:43 May 24, 2006
Jkt 208001
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TA No.
1–81–1A
1–81–1A
1–82–1A
1–82–1A
1–82–1A
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Effective date
9
8
11
10
9
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January 28, 2004.
January 28, 2004.
June 22, 2005.
January 28, 2004.
June 22, 2005.
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Federal Register / Vol. 71, No. 101 / Thursday, May 25, 2006 / Proposed Rules
TEMPORARY AMENDMENTS (TAS)—Continued
Airplane model/AFM No.
PSM
202HT ................................................................................................................................
301 .....................................................................................................................................
311 .....................................................................................................................................
315 .....................................................................................................................................
1–82–1A
1–83–1A
1–83–1A
1–83–1A
operators is $66,400, or $400 per
airplane.
FAA’s Determination and Requirements
of the Proposed AD
These airplane models are
manufactured in Canada 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, TCCA has
kept the FAA informed of the situation
described above. We have examined
TCCA’s findings, evaluated all pertinent
information, and determined that we
need to issue an AD for airplanes of this
type design that are certificated for
operation in the United States.
Therefore, we are proposing this AD,
which would require accomplishing the
actions specified in the service
information described previously.
jlentini on PROD1PC65 with PROPOSAL
Bombardier has issued Service
Bulletin 8–27–105, Revision ‘A,’ dated
September 13, 2005. The service
bulletin describes procedures for
performing a one-time inspection for
non-conforming chain links of chain
assemblies of the elevator trim system
and gust lock system, and corrective
actions if necessary. Conforming chain
links are identified with the number
RC–25; non-conforming chain links are
identified with other numbers.
Corrective actions include replacing any
non-conforming chain links with
conforming chain links, or replacing the
trim chain/chain assembly with a new
or serviceable trim chain/chain
assembly.
Accomplishing the actions specified
in the service information is intended to
adequately address the unsafe
condition. TCCA mandated the service
information and issued Canadian
airworthiness directive CF–2005–38,
dated October 25, 2005, to ensure the
continued airworthiness of these
airplanes in Canada.
Regulatory Findings
Costs of Compliance
This proposed AD would affect about
166 airplanes of U.S. registry. The
proposed inspection would take about 5
work hours per airplane, at an average
labor rate of $80 per work hour. Based
on these figures, the estimated cost of
the proposed inspection for U.S.
VerDate Aug<31>2005
15:43 May 24, 2006
Jkt 208001
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.
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;
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.
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TA No.
Effective date
8
8
15
9
January
January
January
January
28,
28,
28,
28,
2004.
2004.
2004.
2004.
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 adding the following new
airworthiness directive (AD):
Bombardier, Inc. (Formerly de Havilland,
Inc.): Docket No. FAA–2006–24867;
Directorate Identifier 2006–NM–064–AD.
Comments Due Date
(a) The FAA must receive comments on
this AD action by June 26, 2006.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Bombardier Model
DHC–8–102, –103, and –106 airplanes, and
DHC–8–200 and DHC–8–300 series airplanes,
certificated in any category; as identified in
Bombardier Service Bulletin 8–27–105,
Revision ‘A,’ dated September 13, 2005.
Unsafe Condition
(d) This AD results from reports of several
failures of the elevator trim chain, due to
hydrogen embrittlement. We are issuing this
AD to prevent breakage of the elevator trim
chain, which would prevent the actual
position of the elevator trim tab from being
annunciated to the flightcrew. Attempting to
adjust the trim tab to the full nose up or full
nose down position with a broken trim chain
could cause reduced control during airplane
rotation on the ground or a stall during flight.
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.
Temporary Amendments (TAs)
(f) Within 30 days after the effective date
of this AD, revise the applicable airplane
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Federal Register / Vol. 71, No. 101 / Thursday, May 25, 2006 / Proposed Rules
flight manual (AFM) of the affected airplanes
by incorporating the information in the TAs
into the product support manuals (PSM)
listed in Table 1 of this AD. This may be
accomplished by inserting a copy of the
applicable TA into the AFM. The copy of the
TA may be removed from the AFM when a
new revision of the AFM is released that
incorporates material identical to the content
of the TA.
TABLE 1.—BOMBARDIER TEMPORARY AMENDMENTS (TAS)
Airplane model/AFM No.
PSM
102, 103, and 106 .............................................................................................................
102NS, 103NS, and 106NS ..............................................................................................
201 .....................................................................................................................................
202 .....................................................................................................................................
201S and 202S ..................................................................................................................
202HT ................................................................................................................................
301 .....................................................................................................................................
311 .....................................................................................................................................
315 .....................................................................................................................................
1–81–1A
1–81–1A
1–82–1A
1–82–1A
1–82–1A
1–82–1A
1–83–1A
1–83–1A
1–83–1A
Note 1: The suffixes ‘‘NS,’’ ‘‘S,’’ and ‘‘HT,’’
do not indicate separate airplane models; for
example, a Model 102NS airplane is a Model
102 airplane.
DEPARTMENT OF TRANSPORTATION
Inspection and Corrective Actions
14 CFR Part 39
(g) Within 6,000 flight hours or 36 months
after the effective date of this AD, whichever
occurs first, perform a one-time general
visual inspection for non-conforming chain
links of the trim chain/chain assemblies of
the elevator trim system and gust lock system
and, before further flight, do applicable
corrective actions, in accordance with the
Accomplishment Instructions of Bombardier
Service Bulletin 8–27–105, Revision ‘A,’
dated September 13, 2005. After
accomplishing the requirements of this
paragraph, operators may remove the AFM
revisions required by paragraph (f) of this AD
from the AFM.
[Docket No. FAA–2006–24868; Directorate
Identifier 2006–NM–103–AD]
Parts Installation
(h) As of the effective date of this AD, no
person may install an elevator trim chain/
chain assembly on any airplane, unless the
chain links of that trim chain/chain assembly
are identified with the number RC–25.
SUMMARY: The FAA proposes to adopt a
new airworthiness directive (AD) for all
Fokker Model F.28 Mark 0070 and 0100
airplanes. This proposed AD would
require modification of the wiring
distribution of the alternating current
bus transfer power system and the righthand and left-hand windshield antiicing system, as necessary. This
proposed AD results from a report of
electrical sparks coming out of the flight
deck from a panel behind the left seat.
We are proposing this AD to prevent
failure of the sliding window heating
element(s), due to electrical overload,
which could result in smoke and fire in
the cockpit.
DATES: We must receive comments on
this proposed AD by June 26, 2006.
ADDRESSES: Use one of the following
addresses to submit comments on this
proposed AD.
• DOT Docket Web site: Go to https://
dms.dot.gov and follow the instructions
for sending your comments
electronically.
• Government-wide rulemaking Web
site: Go to https://www.regulations.gov
and follow the instructions for sending
your comments electronically.
Alternative Methods of Compliance
(AMOCs)
(i)(1) The Manager, New York Aircraft
Certification Office, FAA, has the authority to
approve AMOCs for this AD, if requested in
accordance with the procedures found in 14
CFR 39.19.
(2) Before using any AMOC approved in
accordance with § 39.19 on any airplane to
which the AMOC applies, notify the
appropriate principal inspector in the FAA
Flight Standards Certificate Holding District
Office.
jlentini on PROD1PC65 with PROPOSAL
Related Information
(j) Canadian airworthiness directive CF–
2005–38, dated October 25, 2005, also
addresses the subject of this AD.
Issued in Renton, Washington, on May 17,
2006.
Kevin M. Mullin,
Acting Manager, Transport Airplane
Directorate, Aircraft Certification Service.
[FR Doc. E6–8008 Filed 5–24–06; 8:45 am]
BILLING CODE 4910–13–P
VerDate Aug<31>2005
15:43 May 24, 2006
Jkt 208001
Federal Aviation Administration
RIN 2120–AA64
Airworthiness Directives; Fokker
Model F.28 Mark 0070 and 0100
Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
PO 00000
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TA No.
Effective date
9
8
11
10
9
8
8
15
9
January 28, 2004.
January 28, 2004.
June 22, 2005.
January 28, 2004.
June 22, 2005.
January 28, 2004.
January 28, 2004.
January 28, 2004.
January 28, 2004.
• Mail: Docket Management Facility,
U.S. Department of Transportation, 400
Seventh Street, SW., Nassif Building,
Room PL–401, Washington, DC 20590.
• Fax: (202) 493–2251.
• Hand Delivery: Room PL–401 on
the plaza level of the Nassif Building,
400 Seventh Street, SW., Washington,
DC, between 9 a.m. and 5 p.m., Monday
through Friday, except Federal holidays.
Contact Fokker Services B.V.,
Technical Services Dept., P.O. Box 231,
2150 AE Nieuw-Vennep, the
Netherlands, for service information
identified in this proposed AD.
FOR FURTHER INFORMATION CONTACT: Tom
Rodriguez, Aerospace Engineer,
International Branch, ANM–116, FAA,
Transport Airplane Directorate, 1601
Lind Avenue, SW., Renton, Washington
98055–4056; telephone (425) 227–1137;
fax (425) 227–1149.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to submit any relevant
written data, views, or arguments
regarding this proposed AD. Send your
comments to an address listed in the
ADDRESSES section. Include the docket
number ‘‘FAA–2006–24868; Directorate
Identifier 2006–NM–103–AD’’ at the
beginning of your comments. We
specifically invite comments on the
overall regulatory, economic,
environmental, and energy aspects of
the proposed AD. We will consider all
comments received by the closing date
and may amend the proposed AD in
light of those comments.
We will post all comments we
receive, without change, to https://
dms.dot.gov, including any personal
information you provide. We will also
post a report summarizing each
substantive verbal contact with FAA
personnel concerning this proposed AD.
Using the search function of that Web
site, anyone can find and read the
comments in any of our dockets,
E:\FR\FM\25MYP1.SGM
25MYP1
]]>Agencies
[Federal Register Volume 71, Number 101 (Thursday, May 25, 2006)]
[Proposed Rules]
[Pages 30070-30072]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E6-8008]
[[Page 30070]]
=======================================================================
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2006-24867; Directorate Identifier 2006-NM-064-AD]
RIN 2120-AA64
Airworthiness Directives; Bombardier Model DHC-8-102, -103, and -
106 Airplanes, and DHC-8-200 and DHC-8-300 Series Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for certain Bombardier Model DHC-8-102, -103, and -106 airplanes, and
DHC-8-200 and DHC-8-300 series airplanes. This proposed AD would
require performing a one-time inspection for non-conforming chain links
of chain assemblies of the elevator trim system and gust lock system,
and corrective actions if necessary. This proposed AD would also
require temporary revisions to the airplane flight manuals of the
affected airplanes, which describe procedures for elevator trim checks.
This proposed AD results from several reports of failure of the
elevator trim chain, due to hydrogen embrittlement. We are proposing
this AD to prevent breakage of the elevator trim chain, which would
prevent the actual position of the elevator trim tab from being
annunciated to the flightcrew. Attempting to adjust the trim tab to the
full nose up or full nose down position with a broken trim chain could
cause reduced control during airplane rotation on the ground or a stall
during flight.
DATES: We must receive comments on this proposed AD by June 26, 2006.
ADDRESSES: Use one of the following addresses to submit comments on
this proposed AD.
DOT Docket Web site: Go to https://dms.dot.gov and follow
the instructions for sending your comments electronically.
Government-wide rulemaking Web site: Go to https://
www.regulations.gov and follow the instructions for sending your
comments electronically.
Mail: Docket Management Facility, U.S. Department of
Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-401,
Washington, DC 20590.
Fax: (202) 493-2251.
Hand Delivery: Room PL-401 on the plaza level of the
Nassif Building, 400 Seventh Street, SW., Washington, DC, between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
Contact Bombardier, Inc., Bombardier Regional Aircraft Division,
123 Garratt Boulevard, Downsview, Ontario M3K 1Y5, Canada, for service
information identified in this proposed AD.
FOR FURTHER INFORMATION CONTACT: Ezra Sasson, Aerospace Engineer,
Systems and Flight Test Branch, ANE-172, FAA, New York Aircraft
Certification Office, 1600 Stewart Avenue, suite 410, Westbury, New
York 11590; telephone (516) 228-7320; fax (516) 794-5531.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to submit any relevant written data, views, or
arguments regarding this proposed AD. Send your comments to an address
listed in the ADDRESSES section. Include the docket number ``FAA-2006-
24867; Directorate Identifier 2006-NM-064-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of the proposed AD. We will
consider all comments received by the closing date and may amend the
proposed AD in light of those comments.
We will post all comments we receive, without change, to https://
dms.dot.gov, including any personal information you provide. We will
also post a report summarizing each substantive verbal contact with FAA
personnel concerning this proposed AD. Using the search function of
that Web site, anyone can find and read the comments in any of our
dockets, including the name of the individual who sent the comment (or
signed the comment on behalf of an association, business, labor union,
etc.). You may review the DOT's complete Privacy Act Statement in the
Federal Register published on April 11, 2000 (65 FR 19477-78), or you
may visit https://dms.dot.gov.
Examining the Docket
You may examine the AD docket on the Internet at https://
dms.dot.gov, or in person at the Docket Management Facility office
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The Docket Management Facility office (telephone (800) 647-
5227) is located on the plaza level of the Nassif Building at the DOT
street address stated in the ADDRESSES section. Comments will be
available in the AD docket shortly after the Docket Management System
receives them.
Discussion
Transport Canada Civil Aviation (TCCA), which is the airworthiness
authority for Canada, notified us that an unsafe condition may exist on
certain Bombardier Model DHC-8-102, -103, and -106 airplanes, and DHC-
8-200 and DHC-8-300 series airplanes. TCCA has received reports of
several failures of the elevator trim chain, due to cracking of certain
chain links caused by hydrogen embrittlement. This condition, if not
corrected, could result in breakage of the elevator trim chain, which
would prevent the actual position of the elevator trim tab from being
annunciated to the flightcrew. Attempting to adjust the trim tab to the
full nose up or full nose down position with a broken trim chain could
cause reduced control during airplane rotation on the ground or a stall
during flight.
Relevant Service Information
Bombardier has issued temporary amendments (TA) to the product
support manuals (PSM) of the airplane flight manuals (AFM) of the
affected airplanes, as shown in the following table. The TAs describe
procedures for visual trim checks to verify that elevators are in
acceptable positions relative to elevator trim wheel settings.
Operators should note that the suffixes ``NS,'' ``S,'' and ``HT,'' only
appear on the labels of certain AFMs and do not indicate separate
airplane models. For example, a Model 102NS airplane is a Model 102
airplane.
Temporary Amendments (TAs)
----------------------------------------------------------------------------------------------------------------
Airplane model/AFM No. PSM TA No. Effective date
----------------------------------------------------------------------------------------------------------------
102, 103, and 106........................ 1-81-1A 9 January 28, 2004.
102NS, 103NS, and 106NS.................. 1-81-1A 8 January 28, 2004.
201...................................... 1-82-1A 11 June 22, 2005.
202...................................... 1-82-1A 10 January 28, 2004.
201S and 202S............................ 1-82-1A 9 June 22, 2005.
[[Page 30071]]
202HT.................................... 1-82-1A 8 January 28, 2004.
301...................................... 1-83-1A 8 January 28, 2004.
311...................................... 1-83-1A 15 January 28, 2004.
315...................................... 1-83-1A 9 January 28, 2004.
----------------------------------------------------------------------------------------------------------------
Bombardier has issued Service Bulletin 8-27-105, Revision `A,'
dated September 13, 2005. The service bulletin describes procedures for
performing a one-time inspection for non-conforming chain links of
chain assemblies of the elevator trim system and gust lock system, and
corrective actions if necessary. Conforming chain links are identified
with the number RC-25; non-conforming chain links are identified with
other numbers. Corrective actions include replacing any non-conforming
chain links with conforming chain links, or replacing the trim chain/
chain assembly with a new or serviceable trim chain/chain assembly.
Accomplishing the actions specified in the service information is
intended to adequately address the unsafe condition. TCCA mandated the
service information and issued Canadian airworthiness directive CF-
2005-38, dated October 25, 2005, to ensure the continued airworthiness
of these airplanes in Canada.
FAA's Determination and Requirements of the Proposed AD
These airplane models are manufactured in Canada 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, TCCA has kept the FAA informed of
the situation described above. We have examined TCCA's findings,
evaluated all pertinent information, and determined that we need to
issue an AD for airplanes of this type design that are certificated for
operation in the United States.
Therefore, we are proposing this AD, which would require
accomplishing the actions specified in the service information
described previously.
Costs of Compliance
This proposed AD would affect about 166 airplanes of U.S. registry.
The proposed inspection would take about 5 work hours per airplane, at
an average labor rate of $80 per work hour. Based on these figures, the
estimated cost of the proposed inspection for U.S. operators is
$66,400, or $400 per airplane.
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;
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
adding the following new airworthiness directive (AD):
Bombardier, Inc. (Formerly de Havilland, Inc.): Docket No. FAA-2006-
24867; Directorate Identifier 2006-NM-064-AD.
Comments Due Date
(a) The FAA must receive comments on this AD action by June 26,
2006.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Bombardier Model DHC-8-102, -103, and -
106 airplanes, and DHC-8-200 and DHC-8-300 series airplanes,
certificated in any category; as identified in Bombardier Service
Bulletin 8-27-105, Revision `A,' dated September 13, 2005.
Unsafe Condition
(d) This AD results from reports of several failures of the
elevator trim chain, due to hydrogen embrittlement. We are issuing
this AD to prevent breakage of the elevator trim chain, which would
prevent the actual position of the elevator trim tab from being
annunciated to the flightcrew. Attempting to adjust the trim tab to
the full nose up or full nose down position with a broken trim chain
could cause reduced control during airplane rotation on the ground
or a stall during flight.
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.
Temporary Amendments (TAs)
(f) Within 30 days after the effective date of this AD, revise
the applicable airplane
[[Page 30072]]
flight manual (AFM) of the affected airplanes by incorporating the
information in the TAs into the product support manuals (PSM) listed
in Table 1 of this AD. This may be accomplished by inserting a copy
of the applicable TA into the AFM. The copy of the TA may be removed
from the AFM when a new revision of the AFM is released that
incorporates material identical to the content of the TA.
Table 1.--Bombardier Temporary Amendments (TAs)
----------------------------------------------------------------------------------------------------------------
Airplane model/AFM No. PSM TA No. Effective date
----------------------------------------------------------------------------------------------------------------
102, 103, and 106........................ 1-81-1A 9 January 28, 2004.
102NS, 103NS, and 106NS.................. 1-81-1A 8 January 28, 2004.
201...................................... 1-82-1A 11 June 22, 2005.
202...................................... 1-82-1A 10 January 28, 2004.
201S and 202S............................ 1-82-1A 9 June 22, 2005.
202HT.................................... 1-82-1A 8 January 28, 2004.
301...................................... 1-83-1A 8 January 28, 2004.
311...................................... 1-83-1A 15 January 28, 2004.
315...................................... 1-83-1A 9 January 28, 2004.
----------------------------------------------------------------------------------------------------------------
Note 1: The suffixes ``NS,'' ``S,'' and ``HT,'' do not indicate
separate airplane models; for example, a Model 102NS airplane is a
Model 102 airplane.
Inspection and Corrective Actions
(g) Within 6,000 flight hours or 36 months after the effective
date of this AD, whichever occurs first, perform a one-time general
visual inspection for non-conforming chain links of the trim chain/
chain assemblies of the elevator trim system and gust lock system
and, before further flight, do applicable corrective actions, in
accordance with the Accomplishment Instructions of Bombardier
Service Bulletin 8-27-105, Revision `A,' dated September 13, 2005.
After accomplishing the requirements of this paragraph, operators
may remove the AFM revisions required by paragraph (f) of this AD
from the AFM.
Parts Installation
(h) As of the effective date of this AD, no person may install
an elevator trim chain/chain assembly on any airplane, unless the
chain links of that trim chain/chain assembly are identified with
the number RC-25.
Alternative Methods of Compliance (AMOCs)
(i)(1) The Manager, New York Aircraft Certification Office, FAA,
has the authority to approve AMOCs for this AD, if requested in
accordance with the procedures found in 14 CFR 39.19.
(2) Before using any AMOC approved in accordance with Sec.
39.19 on any airplane to which the AMOC applies, notify the
appropriate principal inspector in the FAA Flight Standards
Certificate Holding District Office.
Related Information
(j) Canadian airworthiness directive CF-2005-38, dated October
25, 2005, also addresses the subject of this AD.
Issued in Renton, Washington, on May 17, 2006.
Kevin M. Mullin,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E6-8008 Filed 5-24-06; 8:45 am]
BILLING CODE 4910-13-P
