Federal Register - December 1, 2021
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Source: Federal Register
68105
Rules and Regulations
Federal Register Vol. 86, No. 228
Wednesday, December 1, 2021
This section of the FEDERAL REGISTER
contains regulatory documents having general applicability and legal effect, most of which are keyed to and codified in the Code of Federal Regulations, which is published under 50 titles pursuant to 44 U.S.C. 1510.
The Code of Federal Regulations is sold by the Superintendent of Documents.
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210616; Project Identifier MCAI202100256T; Amendment 3921805; AD 20212307
RIN 2120AA64
Airworthiness Directives; Saab AB, Support and Services Formerly Known as Saab AB, Saab Aeronautics Airplanes Federal Aviation Administration FAA, DOT.
ACTION: Final rule.
AGENCY:
The FAA is adopting a new airworthiness directive AD for certain Saab AB, Support and Services Model SAAB 340B airplanes. This AD was prompted by a report that the circuit breaker for the emergency cabin lighting tripped without fault in the system. This AD requires replacing a certain circuit breaker with a part having a higher rating, as specified in a European Union Aviation Safety Agency EASA AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective January 5, 2022.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD
as of January 5, 2022.
ADDRESSES: For EASA material incorporated by reference IBR in this AD, contact EASA, Konrad-AdenauerUfer 3, 50668 Cologne, Germany;
telephone +49 221 8999 000; email ADs@easa.europa.eu; internet www.easa.europa.eu. You may find this IBR material on the EASA website at
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SUMMARY:
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Jkt 256001
https ad.easa.europa.eu. You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 2062313195.
It is also available in the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210616.
Examining the AD Docket You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210616; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, the mandatory continuing airworthiness information MCAI, any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT:
Shahram Daneshmandi, Aerospace Engineer, Large Aircraft Section, International Validation Branch, FAA, 2200 South 216th St., Des Moines, WA
98198; telephone and fax 206231
3220; email shahram.daneshmandi@
faa.gov.
SUPPLEMENTARY INFORMATION:
Background EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 20210058, dated March 1, 2021 EASA AD 2021
0058 also referred to as the Mandatory Continuing Airworthiness Information, or the MCAI, to correct an unsafe condition for certain Saab AB, Support and Services Model SAAB 340B
airplanes.
The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 by adding an AD that would apply to certain Saab AB, Support and Services Model SAAB 340B airplanes.
The NPRM published in the Federal Register on August 9, 2021 86 FR
PO 00000
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Fmt 4700
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43451. The NPRM was prompted by report that the circuit breaker for the emergency cabin lighting tripped without fault in the system. The NPRM
proposed to require replacing a certain circuit breaker with a part having a higher rating, as specified in EASA AD
20210058.
The FAA is issuing this AD to address the low rating of the 2LN circuit breaker during maximum charging conditions.
This condition, if not corrected, could lead to an insufficiently charged emergency battery, with consequent loss of cabin emergency lighting, possibly resulting in injury to occupants during an evacuation. See the MCAI for additional background information.
Discussion of Final Airworthiness Directive Comments The FAA received no comments on the NPRM or on the determination of the cost to the public.
Conclusion The FAA reviewed the relevant data and determined that air safety requires adopting this AD as proposed. Except for minor editorial changes, this AD is adopted as proposed in the NPRM.
None of the changes will increase the economic burden on any operator.
Accordingly, the FAA is issuing this AD
to address the unsafe condition on these products.
Related Service Information Under 1
CFR Part 51
EASA AD 20210058 describes procedures for replacing the 2LN circuit breaker having a rating of 5A with a new breaker having a current rating of 7.5A.
This material is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section.
Costs of Compliance The FAA estimates that this AD
affects 27 airplanes of U.S. registry. The FAA estimates the following costs to comply with this AD:
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