AD 2021-23-07
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Saab AB Support and Services | SAAB 340B | Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes |
Unsafe Condition
The circuit breaker for the emergency cabin lighting tripped without fault in the system, leading to an insufficiently charged emergency battery, with consequent loss of cabin emergency lighting, possibly resulting in injury to occupants during an evacuation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the 2LN circuit breaker having a rating of 5A with a new breaker having a current rating of 7.5A, as specified in EASA AD 2021-0058.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Model SAAB 340B airplanes, certificated in any category, as identified in European Union Aviation Safety Agency (EASA) AD 2021-0058, dated March 1, 2021 (EASA AD 2021-0058).
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
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.
Applicability Source Text
Show captured applicability text from the source AD
(c) Applicability
This AD applies to Saab AB, Support and Services (Formerly Known
as Saab AB, Saab Aeronautics) Model SAAB 340B airplanes,
certificated in any category, as identified in European Union
Aviation Safety Agency (EASA) AD 2021-0058, dated March 1, 2021
(EASA AD 2021-0058).
Document Text
Show stored source text (verify against official source)
[Federal Register Volume 86, Number 228 (Wednesday, December 1, 2021)]
[Rules and Regulations]
[Pages 68105-68107]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2021-26108]
========================================================================
Rules and Regulations
Federal Register
________________________________________________________________________
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.
========================================================================
Federal Register / Vol. 86, No. 228 / Wednesday, December 1, 2021 /
Rules and Regulations
[[Page 68105]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0616; Project Identifier MCAI-2021-00256-T;
Amendment 39-21805; AD 2021-23-07]
RIN 2120-AA64
Airworthiness Directives; Saab AB, Support and Services (Formerly
Known as Saab AB, Saab Aeronautics) Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: 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-Adenauer-Ufer 3, 50668 Cologne, Germany;
telephone +49 221 8999 000; email <a href="/cdn-cgi/l/email-protection#eaabae99aa8f8b998bc48f9f98859a8bc48f9f"><span class="__cf_email__" data-cfemail="5312172013363220327d3626213c23327d3626">[email protected]</span></a>; internet
www.easa.europa.eu. You may find this IBR material on the EASA website
at <a href="https://ad.easa.europa.eu">https://ad.easa.europa.eu</a>. 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 206-231-3195. It is also available in the AD
docket at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by searching for and locating
Docket No. FAA-2021-0616.
Examining the AD Docket
You may examine the AD docket at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by
searching for and locating Docket No. FAA-2021-0616; 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, M-30, West
Building Ground Floor, Room W12-140, 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 206-231-
3220; email <a href="/cdn-cgi/l/email-protection#b0c3d8d1d8c2d1dd9ed4d1ded5c3d8ddd1ded4d9f0d6d1d19ed7dfc6"><span class="__cf_email__" data-cfemail="37445f565f45565a1953565952445f5a5659535e7751565619505841">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Background
EASA, which is the Technical Agent for the Member States of the
European Union, has issued EASA AD 2021-0058, 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 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 2021-0058.
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 2021-0058 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:
[[Page 68106]]
Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
1 work-hour x $85 per hour = $85............................. $50 $135 $3,645
----------------------------------------------------------------------------------------------------------------
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.
The FAA is 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
This AD will not have federalism implications under Executive Order
13132. This AD will 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 this AD:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Will not affect intrastate aviation in Alaska, 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.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
The Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
0
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]
0
2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive:
2021-23-07 Saab AB, Support and Services (Formerly Known as Saab AB,
Saab Aeronautics): Amendment 39-21805; Docket No. FAA-2021-0616;
Project Identifier MCAI-2021-00256-T.
(a) Effective Date
This airworthiness directive (AD) is effective January 5, 2022.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Saab AB, Support and Services (Formerly Known
as Saab AB, Saab Aeronautics) Model SAAB 340B airplanes,
certificated in any category, as identified in European Union
Aviation Safety Agency (EASA) AD 2021-0058, dated March 1, 2021
(EASA AD 2021-0058).
(d) Subject
Air Transport Association (ATA) of America Code 33, Lights.
(e) Reason
This AD was prompted by a report that the circuit breaker for
the emergency cabin lighting tripped without fault in the system.
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.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Requirements
Except as specified in paragraph (h) of this AD: Comply with all
required actions and compliance times specified in, and in
accordance with, EASA AD 2021-0058.
(h) Exceptions to EASA AD 2021-0058
(1) Where EASA AD 2021-0058 refers to its effective date, this
AD requires using the effective date of this AD.
(2) The ``Remarks'' section of EASA AD 2021-0058 does not apply
to this AD.
(i) Additional AD Provisions
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager,
Large Aircraft Section, International Validation Branch, FAA, has
the authority to approve AMOCs for this AD, if requested using the
procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19,
send your request to your principal inspector or responsible Flight
Standards Office, as appropriate. If sending information directly to
the Large Aircraft Section, International Validation Branch, send it
to the attention of the person identified in paragraph (j) of this
AD. Information may be emailed to: <a href="/cdn-cgi/l/email-protection#e2dbcfa3b4b1cfa3abb0cfd5d1d2cfa3afada1a2848383cc858d94"><span class="__cf_email__" data-cfemail="546d7915020779151d06796367647915191b17143235357a333b22">[email protected]</span></a>.
Before using any approved AMOC, notify your appropriate principal
inspector, or lacking a principal inspector, the manager of the
responsible Flight Standards Office.
(2) Contacting the Manufacturer: For any requirement in this AD
to obtain instructions from a manufacturer, the instructions must be
accomplished using a method approved by the Manager, Large Aircraft
Section, International Validation Branch, FAA; or EASA; or Saab AB,
Support and Services' EASA Design Organization Approval (DOA). If
approved by the DOA, the approval must include the DOA-authorized
signature.
(j) Related Information
For more information about this AD, contact Shahram Daneshmandi,
Aerospace Engineer, Large Aircraft Section, International Validation
Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone
and fax 206-231-3220; email <a href="/cdn-cgi/l/email-protection#e99a8188819b8884c78d88878c9a818488878d80a98f8888c78e869f"><span class="__cf_email__" data-cfemail="52213a333a20333f7c36333c37213a3f333c363b123433337c353d24">[email protected]</span></a>.
(k) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference of the service information listed in this
paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do
the actions required by this AD, unless this AD specifies otherwise.
(i) European Union Aviation Safety Agency (EASA) AD 2021-0058,
dated March 1, 2021.
(ii) [Reserved]
(3) For EASA AD 2021-0058, contact EASA, Konrad-Adenauer-Ufer 3,
50668 Cologne, Germany; telephone +49 221 8999 000; email
<a href="/cdn-cgi/l/email-protection#49080d3a092c283a28672c3c3b263928672c3c"><span class="__cf_email__" data-cfemail="5a1b1e291a3f3b293b743f2f28352a3b743f2f">[email protected]</span></a>; internet www.easa.europa.eu. You may find this
EASA AD on the EASA website at <a href="https://ad.easa.europa.eu">https://ad.easa.europa.eu</a>.
(4) 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 206-231-3195.
[[Page 68107]]
(5) You may view this material that is incorporated by reference
at the National Archives and Records Administration (NARA). For
information on the availability of this material at NARA, email
<a href="/cdn-cgi/l/email-protection#670115490e0914170204130e0809270906150649000811"><span class="__cf_email__" data-cfemail="6305114d0a0d10130600170a0c0d230d0211024d040c15">[email protected]</span></a>, or go to: <a href="https://www.archives.gov/federal-register/cfr/ibr-locations.html">https://www.archives.gov/federal-register/cfr/ibr-locations.html</a>.
Issued on October 27, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2021-26108 Filed 11-30-21; 8:45 am]
BILLING CODE 4910-13-P
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
Related Airworthiness Directives
2023-13-07R1
final ruleAirworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes
Unsafe Condition: Standard practices/structures
2023-17-02
final ruleAirworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes
Unsafe Condition: a margin to stall warning that is lower when ice speed is ON than with ice speed OFF, which could lead to inappropriate stall warnings during the landing phase and result in increased pilot workloa...
2023-09-10 Recurring
final ruleAirworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes
Unsafe Condition: Excessive wear on starter generator brushes part number (P/N) 23080-2017 installed in DC starter generator P/N 23080-031 MOD M, which could lead to starter generator failure(s), possibly resulting ...
2023-10-02
final ruleAirworthiness Directives; Transport and Commuter Category Airplanes
Unsafe Condition: Radio altimeter anomalies that are undetected by the automation or pilot, particularly close to the ground (e.g., landing flare), could lead to loss of continued safe flight and landing. Additional...