Airworthiness Directives; Airbus Model A300 Series Airplanes, 19823-19826 [E7-7517]
Download as PDF
19823
Federal Register / Vol. 72, No. 76 / Friday, April 20, 2007 / Proposed Rules
TABLE 1.—PREVIOUS ISSUES OF SERVICE BULLETINS
Airbus Service
Bulletin
Model
A300 airplanes ......................................................................................
Revision level
Date
Alternative Methods of Compliance (AMOCs)
(s)(1) The Manager, International Branch,
ANM–116, 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.
(3) AMOCs approved previously in
accordance with AD 2003–06–04 are
approved as AMOCs with this AD until
paragraph (j) of this AD is accomplished.
Related Information
(t) French airworthiness directive F–2006–
016, dated January 18, 2006, also addresses
the subject of this AD.
Issued in Renton, Washington, on April 12,
2007.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. E7–7516 Filed 4–19–07; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2007–27927; Directorate
Identifier 2006–NM–182–AD]
RIN 2120–AA64
Airworthiness Directives; Airbus Model
A300 Series Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
The FAA proposes to adopt a
new airworthiness directive (AD) for all
Airbus A300 series airplanes. This
proposed AD would require revising the
Airworthiness Limitations Section of
the Instructions for Continued
Airworthiness to incorporate new
limitations for fuel tank systems. This
proposed AD results from fuel system
cprice-sewell on PRODPC61 with PROPOSALS
SUMMARY:
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15:15 Apr 19, 2007
Jkt 211001
03
04
05
05
April 11, 2001.
November 12, 2002.
January 19, 2004.
April 11, 2001.
A300–53–6029
A300–53–6029
A300 B4–601, B4–603, B4–620, B4–622, B4–605R, B4–622R, F4–
605R, F4–622R, and C4–605R Variant F airplanes.
A300–53–0246
A300–53–0246
A300–53–0246
A300–53–6029
06
07
November 12, 2002.
January 19, 2004.
reviews conducted by the manufacturer.
We are proposing this AD to prevent the
potential of ignition sources inside fuel
tanks, which, in combination with
flammable fuel vapors caused by latent
failures, alterations, repairs, or
maintenance actions, could result in
fuel tank explosions and consequent
loss of the airplane.
DATES: We must receive comments on
this proposed AD by May 21, 2007.
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 Airbus, 1 Rond Point Maurice
Bellonte, 31707 Blagnac Cedex, France,
for service information identified in this
proposed AD.
FOR FURTHER INFORMATION CONTACT: Tom
Stafford, Aerospace Engineer,
International Branch, ANM–116, FAA,
Transport Airplane Directorate, 1601
Lind Avenue, SW., Renton, Washington
98057–3356; telephone (425) 227–1622;
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–2007–27927; Directorate
Identifier 2006–NM–182–AD’’ at the
beginning of your comments. We
specifically invite comments on the
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Fmt 4702
Sfmt 4702
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
The FAA has examined the
underlying safety issues involved in fuel
tank explosions on several large
transport airplanes, including the
adequacy of existing regulations, the
service history of airplanes subject to
those regulations, and existing
maintenance practices for fuel tank
systems. As a result of those findings,
we issued a regulation titled ‘‘Transport
Airplane Fuel Tank System Design
Review, Flammability Reduction and
Maintenance and Inspection
E:\FR\FM\20APP1.SGM
20APP1
cprice-sewell on PRODPC61 with PROPOSALS
19824
Federal Register / Vol. 72, No. 76 / Friday, April 20, 2007 / Proposed Rules
Requirements’’ (66 FR 23086, May 7,
2001). In addition to new airworthiness
standards for transport airplanes and
new maintenance requirements, this
rule included Special Federal Aviation
Regulation No. 88 (‘‘SFAR 88,’’
Amendment 21–78, and subsequent
Amendments 21–82 and 21–83).
Among other actions, SFAR 88
requires certain type design (i.e., type
certificate (TC) and supplemental type
certificate (STC)) holders to substantiate
that their fuel tank systems can prevent
ignition sources in the fuel tanks. This
requirement applies to type design
holders for large turbine-powered
transport airplanes and for subsequent
modifications to those airplanes. It
requires them to perform design reviews
and to develop design changes and
maintenance procedures if their designs
do not meet the new fuel tank safety
standards. As explained in the preamble
to the rule, we intended to adopt
airworthiness directives to mandate any
changes found necessary to address
unsafe conditions identified as a result
of these reviews.
In evaluating these design reviews, we
have established four criteria intended
to define the unsafe conditions
associated with fuel tank systems that
require corrective actions. The
percentage of operating time during
which fuel tanks are exposed to
flammable conditions is one of these
criteria. The other three criteria address
the failure types under evaluation:
Single failures, single failures in
combination with a latent condition(s),
and in-service failure experience. For all
four criteria, the evaluations included
consideration of previous actions taken
that may mitigate the need for further
action.
The Joint Aviation Authorities (JAA)
has issued a regulation that is similar to
SFAR 88. (The JAA is an associated
body of the European Civil Aviation
Conference (ECAC) representing the
civil aviation regulatory authorities of a
number of European States who have
agreed to co-operate in developing and
implementing common safety regulatory
standards and procedures.) Under this
regulation, the JAA stated that all
members of the ECAC that hold type
certificates for transport category
airplanes are required to conduct a
design review against explosion risks.
We have determined that the actions
identified in this proposed AD are
necessary to reduce the potential of
ignition sources inside fuel tanks,
which, in combination with flammable
fuel vapors, could result in fuel tank
explosions and consequent loss of the
airplane.
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Jkt 211001
The European Aviation Safety Agency
(EASA), which is the Technical Agent
for the Member States of the European
Community, notified us that an unsafe
condition may exist on all Airbus Model
A300 series airplanes. The EASA
advises that Airbus has issued new fuel
airworthiness limitations (FALs) to
address failure conditions for which an
unacceptable probability of ignition risk
could exist if specific tasks or practices
or both are not performed in accordance
with the manufacturer’s requirements.
The new FALs are intended to satisfy
the JAA’s Interim Policy of Fuel Tank
Safety and SFAR 88 requirements.
Relevant Service Information
Airbus has issued A300 Fuel
Airworthiness Limitations, Document
95A.1928/05, Issue 1, dated December
19, 2005 (approved by the EASA on
March 13, 2006). Section 1,
‘‘Maintenance/Inspection Tasks,’’ of
Document 95A.1928/05 describes
certain FAL inspections, which are
periodic inspections of certain features
for latent failures that could contribute
to an ignition source. Section 2,
‘‘Critical Design Configuration Control
Limitations,’’ of Document 95A.1928/05
identifies critical design configuration
control limitations (CDCCLs). A CDCCL
is a limitation requirement to preserve
a critical ignition source prevention
feature of the fuel tank system design
that is necessary to prevent the
occurrence of an unsafe condition. The
purpose of a CDCCL is to provide
instruction to retain the critical ignition
source prevention feature during
configuration change that may be
caused by alterations, repairs, or
maintenance actions. A CDCCL is not a
periodic inspection.
Accomplishing the actions specified
in the service information is intended to
adequately address the unsafe
condition. The EASA mandated the
service information and issued
airworthiness directive 2006–0200,
dated July 11, 2006, to ensure the
continued airworthiness of these
airplanes in the European Union.
FAA’s Determination and Requirements
of the Proposed AD
This airplane model is manufactured
in France and is 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. As described
in FAA Order 8100.14A, ‘‘Interim
Procedures for Working with the
European Community on Airworthiness
Certification and Continued
Airworthiness,’’ dated August 12, 2005,
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Sfmt 4702
the EASA has kept the FAA informed of
the situation described above. We have
examined the EASA’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 revising the
Airworthiness Limitations Section
(ALS) of the Instructions for Continued
Airworthiness to incorporate new
limitations for fuel tank systems.
Differences Between the Proposed AD
and EASA Airworthiness Directive
For airplanes that have exceeded
34,000 total flight hours as of effective
date of the EASA airworthiness
directive 2006–0200, the EASA
airworthiness directive states that Task
28–18–00–03–1, ‘‘Operational check of
lo-level/underfull/calibration sensors,’’
must be done within 6 years or 20,000
flight hours after the effective date. This
AD, however, would require
accomplishing Task 28–18–00–03–1 at
the later of the following compliance
times: (1) Prior to the accumulation of
40,000 total flight hours, or (2) within
72 months or 20,000 flight hours after
the effective date of this AD, whichever
occurs first. The EASA is considering
further rulemaking to implement this
change in the compliance time.
EASA airworthiness directive 2006–
0200 states that the defined intervals for
the FALs have to be counted from the
effective date of the EASA airworthiness
directive. This proposed AD would
instead start counting the first interval
of the FALs from the later of the
following compliance times: (1) The
effective date of this AD, or (2) the date
of issuance of the original French
standard airworthiness certificate or the
date of issuance of the original French
export certificate of airworthiness. The
EASA also is considering further
rulemaking to implement this change in
the compliance time.
Clarification of Service Information
EASA airworthiness directive 2006–
0200 requires adherence to certain
maintenance and inspection tasks in
‘‘* * * Airbus ALS Part 5, Fuel
Airworthiness Limitations as defined in
document A300 Fuel Airworthiness
Limitations, 95A.1928/05 at Issue 1
* * * ’’. However, Airbus has not yet
published a document titled, ‘‘Airbus
ALS Part 5, Fuel Airworthiness
Limitations,’’ for Model A300 series
airplanes. This proposed AD instead
refers only to Airbus A300 Fuel
Airworthiness Limitations, Document
95A.1928/05, Issue 1; the maintenance
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Federal Register / Vol. 72, No. 76 / Friday, April 20, 2007 / Proposed Rules
and inspections tasks are found in
Section 1 of that document.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Safety.
Costs of Compliance
This proposed AD would affect about
30 airplanes of U.S. registry. The
proposed actions would take about 2
work hours per airplane, at an average
labor rate of $80 per work hour. Based
on these figures, the estimated cost of
the proposed AD for U.S. operators is
$4,800, or $160 per airplane.
The Proposed Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA proposes to amend 14 CFR part
39 as follows:
Authority for This Rulemaking
1. The authority citation for part 39
continues to read as follows:
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.
cprice-sewell on PRODPC61 with PROPOSALS
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.
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PART 39—AIRWORTHINESS
DIRECTIVES
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):
Airbus: Docket No. FAA–2007–27927;
Directorate Identifier 2006–NM–182-AD.
Comments Due Date
(a) The FAA must receive comments on
this AD action by May 21, 2007.
Affected ADs
(b) None.
Applicability
(c) This AD applies to all Airbus Model
A300 series airplanes, certificated in any
category, except Airbus Model A300–600
series airplanes.
Note 1: This AD requires revisions to
certain operator maintenance documents to
include new inspections and critical design
configuration control limitations (CDCCLs).
Compliance with the operator maintenance
documents is required by 14 CFR 91.403(c).
For airplanes that have been previously
modified, altered, or repaired in the areas
addressed by these inspections and CDCCLs,
the operator may not be able to accomplish
the inspections and CDCCLs described in the
revisions. In this situation, to comply with 14
CFR 91.403(c), the operator must request
approval for an alternative method of
compliance according to paragraph (j) of this
AD. The request should include a description
of changes to the required inspections and
CDCCLs that will preserve the critical
ignition source prevention feature of the
affected fuel system.
Unsafe Condition
(d) This AD results from fuel system
reviews conducted by the manufacturer. We
are issuing this AD to prevent potential of
ignition sources inside fuel tanks, which, in
combination with flammable fuel vapors
caused by latent failures, alterations, repairs,
or maintenance actions, could result in fuel
tank explosions and consequent loss of the
airplane.
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.
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19825
Revise Airworthiness Limitations Section
(ALS) to Incorporate Fuel Maintenance and
Inspection Tasks
(f) Within 3 months after the effective date
of this AD, revise the ALS of the Instructions
for Continued Airworthiness to incorporate
Airbus A300 Fuel Airworthiness Limitations,
Document 95A.1928/05, Issue 1, dated
December 19, 2005 (approved by the
European Aviation Safety Agency (EASA) on
March 13, 2006), Section 1, ‘‘Maintenance/
Inspection Tasks.’’ For all tasks identified in
Section 1 of Document 95A.1928/05, the
initial compliance times start from the later
of the times specified in paragraphs (f)(1) and
(f)(2) of this AD, and the repetitive
inspections must be accomplished at the
interval specified in Section 1 of Document
95A.1928/05, except as provided by
paragraph (g) of this AD.
(1) The effective date of this AD.
(2) The date of issuance of the original
French standard airworthiness certificate or
the date of issuance of the original French
export certificate of airworthiness.
Initial Compliance Time for Task 28–18–00–
03–1
(g) For Task 28–18–00–03–1, ‘‘Operational
check of lo-level/underfull/calibration
sensors,’’ identified in Section 1,
‘‘Maintenance/Inspection Tasks,’’ of Airbus
A300 Fuel Airworthiness Limitations,
Document 95A.1928/05, Issue 1, dated
December 19, 2005: The initial compliance
time is the later of the times specified in
paragraphs (g)(1) and (g)(2) of this AD.
Thereafter, Task 28–18–00–03–1 must be
accomplished at the repetitive interval
specified in Section 1 of Document
95A.1928/05.
(1) Prior to the accumulation of 40,000
total flight hours.
(2) Within 72 months or 20,000 flight hours
after the effective date of this AD, whichever
occurs first.
Revise ALS to Incorporate CDCCLs
(h) Within 12 months after the effective
date of this AD, revise the ALS of the
Instructions for Continued Airworthiness to
incorporate Airbus A300 Fuel Airworthiness
Limitations, Document 95A.1928/05, Issue 1,
dated December 19, 2005 (approved by the
EASA on March 13, 2006), Section 2,
‘‘Critical Design Configuration Control
Limitations.’’
No Alternative Inspections, Inspection
Intervals, or CDCCLs
(i) Except as provided by paragraph (j) of
this AD: After accomplishing the actions
specified in paragraphs (f) and (h) of this AD,
no alternative inspections, inspection
intervals, or CDCCLs may be used.
Alternative Methods of Compliance
(AMOCs)
(j)(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
E:\FR\FM\20APP1.SGM
20APP1
19826
Federal Register / Vol. 72, No. 76 / Friday, April 20, 2007 / Proposed Rules
Federal Aviation Administration
• 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 Airbus, 1 Rond Point Maurice
Bellonte, 31707 Blagnac Cedex, France,
for service information identified in this
proposed AD.
FOR FURTHER INFORMATION CONTACT: Tom
Stafford, Aerospace Engineer,
International Branch, ANM–116, FAA,
Transport Airplane Directorate, 1601
Lind Avenue, SW., Renton, Washington
98057–3356; telephone (425) 227–1622;
fax (425) 227–1149.
SUPPLEMENTARY INFORMATION:
14 CFR Part 39
Comments Invited
[Docket No. FAA–2007–27925; Directorate
Identifier 2006–NM–183–AD]
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–2007–27925; Directorate
Identifier 2006–NM–183–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.
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
(k) EASA airworthiness directive 2006–
0200, dated July 11, 2006, also addresses the
subject of this AD.
Issued in Renton, Washington, on April 11,
2007.
Stephen P. Boyd,
Acting Manager, Transport Airplane
Directorate, Aircraft Certification Service.
[FR Doc. E7–7517 Filed 4–19–07; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
RIN 2120–AA64
Airworthiness Directives; Airbus Model
A310 Series Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking
(NPRM).
cprice-sewell on PRODPC61 with PROPOSALS
AGENCY:
SUMMARY: The FAA proposes to adopt a
new airworthiness directive (AD) for all
Airbus Model A310 series airplanes.
This proposed AD would require
revising the Airworthiness Limitations
Section of the Instructions for
Continued Airworthiness to incorporate
new limitations for fuel tank systems.
This proposed AD results from fuel
system reviews conducted by the
manufacturer. We are proposing this AD
to prevent the potential of ignition
sources inside fuel tanks, which, in
combination with flammable fuel vapors
caused by latent failures, alterations,
repairs, or maintenance actions, could
result in fuel tank explosions and
consequent loss of the airplane.
DATES: We must receive comments on
this proposed AD by May 21, 2007.
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.
VerDate Aug<31>2005
15:15 Apr 19, 2007
Jkt 211001
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
PO 00000
Frm 00020
Fmt 4702
Sfmt 4702
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
The FAA has examined the
underlying safety issues involved in fuel
tank explosions on several large
transport airplanes, including the
adequacy of existing regulations, the
service history of airplanes subject to
those regulations, and existing
maintenance practices for fuel tank
systems. As a result of those findings,
we issued a regulation titled ‘‘Transport
Airplane Fuel Tank System Design
Review, Flammability Reduction and
Maintenance and Inspection
Requirements’’ (66 FR 23086, May 7,
2001). In addition to new airworthiness
standards for transport airplanes and
new maintenance requirements, this
rule included Special Federal Aviation
Regulation No. 88 (‘‘SFAR 88,’’
Amendment 21–78, and subsequent
Amendments 21–82 and 21–83).
Among other actions, SFAR 88
requires certain type design (i.e., type
certificate (TC) and supplemental type
certificate (STC)) holders to substantiate
that their fuel tank systems can prevent
ignition sources in the fuel tanks. This
requirement applies to type design
holders for large turbine-powered
transport airplanes and for subsequent
modifications to those airplanes. It
requires them to perform design reviews
and to develop design changes and
maintenance procedures if their designs
do not meet the new fuel tank safety
standards. As explained in the preamble
to the rule, we intended to adopt
airworthiness directives to mandate any
changes found necessary to address
unsafe conditions identified as a result
of these reviews.
In evaluating these design reviews, we
have established four criteria intended
to define the unsafe conditions
associated with fuel tank systems that
require corrective actions. The
percentage of operating time during
which fuel tanks are exposed to
flammable conditions is one of these
criteria. The other three criteria address
the failure types under evaluation:
single failures, single failures in
combination with a latent condition(s),
and in-service failure experience. For all
four criteria, the evaluations included
consideration of previous actions taken
that may mitigate the need for further
action.
The Joint Aviation Authorities (JAA)
has issued a regulation that is similar to
SFAR 88. (The JAA is an associated
body of the European Civil Aviation
E:\FR\FM\20APP1.SGM
20APP1
Agencies
[Federal Register Volume 72, Number 76 (Friday, April 20, 2007)]
[Proposed Rules]
[Pages 19823-19826]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E7-7517]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2007-27927; Directorate Identifier 2006-NM-182-AD]
RIN 2120-AA64
Airworthiness Directives; Airbus Model A300 Series Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for all Airbus A300 series airplanes. This proposed AD would require
revising the Airworthiness Limitations Section of the Instructions for
Continued Airworthiness to incorporate new limitations for fuel tank
systems. This proposed AD results from fuel system reviews conducted by
the manufacturer. We are proposing this AD to prevent the potential of
ignition sources inside fuel tanks, which, in combination with
flammable fuel vapors caused by latent failures, alterations, repairs,
or maintenance actions, could result in fuel tank explosions and
consequent loss of the airplane.
DATES: We must receive comments on this proposed AD by May 21, 2007.
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 Airbus, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex,
France, for service information identified in this proposed AD.
FOR FURTHER INFORMATION CONTACT: Tom Stafford, Aerospace Engineer,
International Branch, ANM-116, FAA, Transport Airplane Directorate,
1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425)
227-1622; 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-2007-
27927; Directorate Identifier 2006-NM-182-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
The FAA has examined the underlying safety issues involved in fuel
tank explosions on several large transport airplanes, including the
adequacy of existing regulations, the service history of airplanes
subject to those regulations, and existing maintenance practices for
fuel tank systems. As a result of those findings, we issued a
regulation titled ``Transport Airplane Fuel Tank System Design Review,
Flammability Reduction and Maintenance and Inspection
[[Page 19824]]
Requirements'' (66 FR 23086, May 7, 2001). In addition to new
airworthiness standards for transport airplanes and new maintenance
requirements, this rule included Special Federal Aviation Regulation
No. 88 (``SFAR 88,'' Amendment 21-78, and subsequent Amendments 21-82
and 21-83).
Among other actions, SFAR 88 requires certain type design (i.e.,
type certificate (TC) and supplemental type certificate (STC)) holders
to substantiate that their fuel tank systems can prevent ignition
sources in the fuel tanks. This requirement applies to type design
holders for large turbine-powered transport airplanes and for
subsequent modifications to those airplanes. It requires them to
perform design reviews and to develop design changes and maintenance
procedures if their designs do not meet the new fuel tank safety
standards. As explained in the preamble to the rule, we intended to
adopt airworthiness directives to mandate any changes found necessary
to address unsafe conditions identified as a result of these reviews.
In evaluating these design reviews, we have established four
criteria intended to define the unsafe conditions associated with fuel
tank systems that require corrective actions. The percentage of
operating time during which fuel tanks are exposed to flammable
conditions is one of these criteria. The other three criteria address
the failure types under evaluation: Single failures, single failures in
combination with a latent condition(s), and in-service failure
experience. For all four criteria, the evaluations included
consideration of previous actions taken that may mitigate the need for
further action.
The Joint Aviation Authorities (JAA) has issued a regulation that
is similar to SFAR 88. (The JAA is an associated body of the European
Civil Aviation Conference (ECAC) representing the civil aviation
regulatory authorities of a number of European States who have agreed
to co-operate in developing and implementing common safety regulatory
standards and procedures.) Under this regulation, the JAA stated that
all members of the ECAC that hold type certificates for transport
category airplanes are required to conduct a design review against
explosion risks.
We have determined that the actions identified in this proposed AD
are necessary to reduce the potential of ignition sources inside fuel
tanks, which, in combination with flammable fuel vapors, could result
in fuel tank explosions and consequent loss of the airplane.
The European Aviation Safety Agency (EASA), which is the Technical
Agent for the Member States of the European Community, notified us that
an unsafe condition may exist on all Airbus Model A300 series
airplanes. The EASA advises that Airbus has issued new fuel
airworthiness limitations (FALs) to address failure conditions for
which an unacceptable probability of ignition risk could exist if
specific tasks or practices or both are not performed in accordance
with the manufacturer's requirements. The new FALs are intended to
satisfy the JAA's Interim Policy of Fuel Tank Safety and SFAR 88
requirements.
Relevant Service Information
Airbus has issued A300 Fuel Airworthiness Limitations, Document
95A.1928/05, Issue 1, dated December 19, 2005 (approved by the EASA on
March 13, 2006). Section 1, ``Maintenance/Inspection Tasks,'' of
Document 95A.1928/05 describes certain FAL inspections, which are
periodic inspections of certain features for latent failures that could
contribute to an ignition source. Section 2, ``Critical Design
Configuration Control Limitations,'' of Document 95A.1928/05 identifies
critical design configuration control limitations (CDCCLs). A CDCCL is
a limitation requirement to preserve a critical ignition source
prevention feature of the fuel tank system design that is necessary to
prevent the occurrence of an unsafe condition. The purpose of a CDCCL
is to provide instruction to retain the critical ignition source
prevention feature during configuration change that may be caused by
alterations, repairs, or maintenance actions. A CDCCL is not a periodic
inspection.
Accomplishing the actions specified in the service information is
intended to adequately address the unsafe condition. The EASA mandated
the service information and issued airworthiness directive 2006-0200,
dated July 11, 2006, to ensure the continued airworthiness of these
airplanes in the European Union.
FAA's Determination and Requirements of the Proposed AD
This airplane model is manufactured in France and is 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. As described in FAA
Order 8100.14A, ``Interim Procedures for Working with the European
Community on Airworthiness Certification and Continued Airworthiness,''
dated August 12, 2005, the EASA has kept the FAA informed of the
situation described above. We have examined the EASA'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 revising
the Airworthiness Limitations Section (ALS) of the Instructions for
Continued Airworthiness to incorporate new limitations for fuel tank
systems.
Differences Between the Proposed AD and EASA Airworthiness Directive
For airplanes that have exceeded 34,000 total flight hours as of
effective date of the EASA airworthiness directive 2006-0200, the EASA
airworthiness directive states that Task 28-18-00-03-1, ``Operational
check of lo-level/underfull/calibration sensors,'' must be done within
6 years or 20,000 flight hours after the effective date. This AD,
however, would require accomplishing Task 28-18-00-03-1 at the later of
the following compliance times: (1) Prior to the accumulation of 40,000
total flight hours, or (2) within 72 months or 20,000 flight hours
after the effective date of this AD, whichever occurs first. The EASA
is considering further rulemaking to implement this change in the
compliance time.
EASA airworthiness directive 2006-0200 states that the defined
intervals for the FALs have to be counted from the effective date of
the EASA airworthiness directive. This proposed AD would instead start
counting the first interval of the FALs from the later of the following
compliance times: (1) The effective date of this AD, or (2) the date of
issuance of the original French standard airworthiness certificate or
the date of issuance of the original French export certificate of
airworthiness. The EASA also is considering further rulemaking to
implement this change in the compliance time.
Clarification of Service Information
EASA airworthiness directive 2006-0200 requires adherence to
certain maintenance and inspection tasks in ``* * * Airbus ALS Part 5,
Fuel Airworthiness Limitations as defined in document A300 Fuel
Airworthiness Limitations, 95A.1928/05 at Issue 1 * * * ''. However,
Airbus has not yet published a document titled, ``Airbus ALS Part 5,
Fuel Airworthiness Limitations,'' for Model A300 series airplanes. This
proposed AD instead refers only to Airbus A300 Fuel Airworthiness
Limitations, Document 95A.1928/05, Issue 1; the maintenance
[[Page 19825]]
and inspections tasks are found in Section 1 of that document.
Costs of Compliance
This proposed AD would affect about 30 airplanes of U.S. registry.
The proposed actions would take about 2 work hours per airplane, at an
average labor rate of $80 per work hour. Based on these figures, the
estimated cost of the proposed AD for U.S. operators is $4,800, or $160
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):
Airbus: Docket No. FAA-2007-27927; Directorate Identifier 2006-NM-
182-AD.
Comments Due Date
(a) The FAA must receive comments on this AD action by May 21,
2007.
Affected ADs
(b) None.
Applicability
(c) This AD applies to all Airbus Model A300 series airplanes,
certificated in any category, except Airbus Model A300-600 series
airplanes.
Note 1: This AD requires revisions to certain operator
maintenance documents to include new inspections and critical design
configuration control limitations (CDCCLs). Compliance with the
operator maintenance documents is required by 14 CFR 91.403(c). For
airplanes that have been previously modified, altered, or repaired
in the areas addressed by these inspections and CDCCLs, the operator
may not be able to accomplish the inspections and CDCCLs described
in the revisions. In this situation, to comply with 14 CFR
91.403(c), the operator must request approval for an alternative
method of compliance according to paragraph (j) of this AD. The
request should include a description of changes to the required
inspections and CDCCLs that will preserve the critical ignition
source prevention feature of the affected fuel system.
Unsafe Condition
(d) This AD results from fuel system reviews conducted by the
manufacturer. We are issuing this AD to prevent potential of
ignition sources inside fuel tanks, which, in combination with
flammable fuel vapors caused by latent failures, alterations,
repairs, or maintenance actions, could result in fuel tank
explosions and consequent loss of the airplane.
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.
Revise Airworthiness Limitations Section (ALS) to Incorporate Fuel
Maintenance and Inspection Tasks
(f) Within 3 months after the effective date of this AD, revise
the ALS of the Instructions for Continued Airworthiness to
incorporate Airbus A300 Fuel Airworthiness Limitations, Document
95A.1928/05, Issue 1, dated December 19, 2005 (approved by the
European Aviation Safety Agency (EASA) on March 13, 2006), Section
1, ``Maintenance/Inspection Tasks.'' For all tasks identified in
Section 1 of Document 95A.1928/05, the initial compliance times
start from the later of the times specified in paragraphs (f)(1) and
(f)(2) of this AD, and the repetitive inspections must be
accomplished at the interval specified in Section 1 of Document
95A.1928/05, except as provided by paragraph (g) of this AD.
(1) The effective date of this AD.
(2) The date of issuance of the original French standard
airworthiness certificate or the date of issuance of the original
French export certificate of airworthiness.
Initial Compliance Time for Task 28-18-00-03-1
(g) For Task 28-18-00-03-1, ``Operational check of lo-level/
underfull/calibration sensors,'' identified in Section 1,
``Maintenance/Inspection Tasks,'' of Airbus A300 Fuel Airworthiness
Limitations, Document 95A.1928/05, Issue 1, dated December 19, 2005:
The initial compliance time is the later of the times specified in
paragraphs (g)(1) and (g)(2) of this AD. Thereafter, Task 28-18-00-
03-1 must be accomplished at the repetitive interval specified in
Section 1 of Document 95A.1928/05.
(1) Prior to the accumulation of 40,000 total flight hours.
(2) Within 72 months or 20,000 flight hours after the effective
date of this AD, whichever occurs first.
Revise ALS to Incorporate CDCCLs
(h) Within 12 months after the effective date of this AD, revise
the ALS of the Instructions for Continued Airworthiness to
incorporate Airbus A300 Fuel Airworthiness Limitations, Document
95A.1928/05, Issue 1, dated December 19, 2005 (approved by the EASA
on March 13, 2006), Section 2, ``Critical Design Configuration
Control Limitations.''
No Alternative Inspections, Inspection Intervals, or CDCCLs
(i) Except as provided by paragraph (j) of this AD: After
accomplishing the actions specified in paragraphs (f) and (h) of
this AD, no alternative inspections, inspection intervals, or CDCCLs
may be used.
Alternative Methods of Compliance (AMOCs)
(j)(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
[[Page 19826]]
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
(k) EASA airworthiness directive 2006-0200, dated July 11, 2006,
also addresses the subject of this AD.
Issued in Renton, Washington, on April 11, 2007.
Stephen P. Boyd,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E7-7517 Filed 4-19-07; 8:45 am]
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