Airworthiness Directives; Pratt & Whitney Turbofan Engines, 79235-79236 [2022-28091]

Download as PDF Federal Register / Vol. 87, No. 247 / Tuesday, December 27, 2022 / Rules and Regulations (k) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) 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 the AD specifies otherwise. (3) The following service information was approved for IBR on November 22, 2021 (86 FR 57574, October 18, 2021). (i) Leonardo Helicopters Alert Service Bulletin No. 139–609, Revision A, dated April 13, 2021. (ii) [Reserved] (4) For service information identified in this AD, contact Leonardo S.p.a. Helicopters, Emanuele Bufano, Head of Airworthiness, Viale G. Agusta 520, 21017 C. Costa di Samarate (Va) Italy; telephone +39–0331– 225074; fax +39–0331–229046; or at customerportal.leonardocompany.com/enUS/. (5) You may view this service information at FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N–321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call (817) 222–5110. (6) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, email: fr.inspection@nara.gov, or go to: www.archives.gov/federal-register/cfr/ibrlocations.html. Issued on December 20, 2022. Christina Underwood, Acting Director, Compliance & Airworthiness Division, Aircraft Certification Service. SUPPLEMENTARY INFORMATION: [FR Doc. 2022–28090 Filed 12–23–22; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2022–1306; Project Identifier AD–2022–01040–E; Amendment 39–22289; AD 2022–27–04] RIN 2120–AA64 Airworthiness Directives; Pratt & Whitney Turbofan Engines Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: The FAA is adopting a new airworthiness directive (AD) for all Pratt & Whitney (PW) PW1519G, PW1521G, TKELLEY on DSK125TN23PROD with RULES SUMMARY: VerDate Sep<11>2014 16:22 Dec 23, 2022 Jkt 259001 PW1521G–3, PW1521GA, PW1524G, PW1524G–3, PW1525G, and PW1525G– 3 model turbofan engines. This AD was prompted by an uncommanded dual engine shutdown upon landing, resulting in compromised braking capability due to the loss of engine power and hydraulic systems. This AD requires removal from service of certain electronic engine control (EEC) full authority digital engine control (FADEC) software versions and replacement with updated software. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective January 31, 2023. ADDRESSES: AD Docket: You may examine the AD docket at regulations.gov by searching for and locating Docket No. FAA–2022–1306; 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, 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: Mark Taylor, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: (781) 238–7229; email: Mark.Taylor@ faa.gov. Background The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to all PW PW1519G, PW1521G, PW1521G–3, PW1521GA, PW1524G, PW1524G–3, PW1525G, and PW1525G– 3 model turbofan engines. The NPRM published in the Federal Register on October 25, 2022 (87 FR 64397). The NPRM was prompted by a report that an airplane experienced an uncommanded dual engine shutdown upon landing, resulting in compromised braking capability due to the loss of engine power and hydraulic systems. A subsequent investigation determined that the sequence of the auto-throttle increasing throttle to maintain Mach number, immediately followed by pilot command to decrease throttle to idle, caused a transient disagreement PO 00000 Frm 00023 Fmt 4700 Sfmt 4700 79235 between actual and commanded thrust. This disagreement triggered the thrust control malfunction (TCM) detection logic and resulted in dual engine shutdown once the weight on wheels signal was activated upon landing. The installed EEC FADEC software version latches the fault and allows the engine to continue operation as commanded but shuts down the engine upon landing. The manufacturer identified the situations that could trigger the TCM logic erroneously and updated the EEC FADEC software. This software update makes corrective improvements to the TCM logic, including revised criteria for triggering the TCM logic and establishing criteria that permit the TCM logic to unlatch during flight. In the NPRM, the FAA proposed to require removal from service of certain EEC FADEC software versions and replacement with a software version eligible for installation. The FAA is issuing this AD to address the unsafe condition on these products. Discussion of Final Airworthiness Directive Comments The FAA received one comment, from Air Line Pilots Association, International (ALPA). ALPA supported the NPRM without change. Conclusion The FAA reviewed the relevant data, considered the comments received, and determined that air safety requires adopting the AD as proposed. Accordingly, the FAA is issuing this AD to address the unsafe condition on these products. Except for minor editorial changes, this AD is adopted as proposed in the NPRM. Related Service Information The FAA reviewed PW Service Bulletin (SB) PW1000G–A–73–00– 0054–00A–930A–D, Issue No. 002, dated June 20, 2022. This service information specifies procedures for replacing or modifying the EEC to incorporate FADEC software version V2.11.14. Costs of Compliance The FAA estimates that this AD affects 147 engines installed on airplanes of U.S. registry. The FAA estimates the following costs to comply with this AD: E:\FR\FM\27DER1.SGM 27DER1 79236 Federal Register / Vol. 87, No. 247 / Tuesday, December 27, 2022 / Rules and Regulations ESTIMATED COSTS Action Labor cost Upgrade EEC FADEC Software ..................... 2 work-hours × $85 per hour = $170 ............. 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. TKELLEY on DSK125TN23PROD with RULES 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: VerDate Sep<11>2014 16:22 Dec 23, 2022 Jkt 259001 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 FAA amends § 39.13 by adding the following new airworthiness directive: ■ 2022–27–04 Pratt & Whitney: Amendment 39–22289; Docket No. FAA–2022–1306; Project Identifier AD–2022–01040–E. (a) Effective Date This airworthiness directive (AD) is effective January 31, 2023. (b) Affected ADs None. (c) Applicability This AD applies to Pratt & Whitney PW1519G, PW1521G, PW1521G–3, PW1521GA, PW1524G, PW1524G–3, PW1525G, and PW1525G–3 model turbofan engines. (d) Subject Joint Aircraft System Component (JASC) Code 7600, Engine Controls. This AD was prompted by an uncommanded dual engine shutdown upon landing, resulting in compromised braking capability due to the loss of engine power and hydraulic systems. The FAA is issuing this AD to prevent compromised braking capability due to uncommanded dual engine shutdown upon landing. The unsafe condition, if not addressed, could result in runway excursion. (f) Compliance $170 $24,990 (i) Alternative Methods of Compliance (AMOCs) (1) The Manager, ECO 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 local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (j) of this AD and email to: ANE-AD-AMOC@faa.gov. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/ certificate holding district office. (j) Related Information For more information about this AD, contact Mark Taylor, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: (781) 238–7229; email: Mark.Taylor@faa.gov. (k) Material Incorporated by Reference None. Issued on December 20, 2022. Christina Underwood, Acting Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2022–28091 Filed 12–23–22; 8:45 am] DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2022–1574; Project Identifier MCAI–2022–01362–T; Amendment 39–22274; AD 2022–25–18] RIN 2120–AA64 Comply with this AD within the compliance times specified, unless already done. (g) Required Actions For affected engines with installed electronic engine control (EEC) full authority digital engine control (FADEC) software version earlier than V2.11.14.1, within 12 months after the effective date of this AD, remove the EEC FADEC software and replace with an EEC FADEC software version eligible for installation. (h) Definitions For the purpose of this AD, ‘‘EEC FADEC software version eligible for installation’’ is EEC FADEC software version V2.11.14.1 or later. Frm 00024 $0 Cost on U.S. operators BILLING CODE 4910–13–P (e) Unsafe Condition PO 00000 Cost per product Parts cost Fmt 4700 Sfmt 4700 Airworthiness Directives; BAE Systems (Operations) Limited Airplanes; Correction Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request for comment; correction. AGENCY: The FAA is correcting an airworthiness directive (AD) that was published in the Federal Register. That AD applies to certain BAE Systems (Operations) Limited Model BAe 146 and Model Avro 146–RJ series airplanes. As published, the identity of certain airplanes in the preamble and regulatory SUMMARY: E:\FR\FM\27DER1.SGM 27DER1

Agencies

[Federal Register Volume 87, Number 247 (Tuesday, December 27, 2022)]
[Rules and Regulations]
[Pages 79235-79236]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2022-28091]


-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2022-1306; Project Identifier AD-2022-01040-E; 
Amendment 39-22289; AD 2022-27-04]
RIN 2120-AA64


Airworthiness Directives; Pratt & Whitney Turbofan Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all 
Pratt & Whitney (PW) PW1519G, PW1521G, PW1521G-3, PW1521GA, PW1524G, 
PW1524G-3, PW1525G, and PW1525G-3 model turbofan engines. This AD was 
prompted by an uncommanded dual engine shutdown upon landing, resulting 
in compromised braking capability due to the loss of engine power and 
hydraulic systems. This AD requires removal from service of certain 
electronic engine control (EEC) full authority digital engine control 
(FADEC) software versions and replacement with updated software. The 
FAA is issuing this AD to address the unsafe condition on these 
products.

DATES: This AD is effective January 31, 2023.

ADDRESSES: AD Docket: You may examine the AD docket at regulations.gov 
by searching for and locating Docket No. FAA-2022-1306; 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, 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: Mark Taylor, Aviation Safety Engineer, 
ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 
(781) 238-7229; email: [email protected].

SUPPLEMENTARY INFORMATION: 

Background

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 by adding an AD that would apply to all PW PW1519G, 
PW1521G, PW1521G-3, PW1521GA, PW1524G, PW1524G-3, PW1525G, and PW1525G-
3 model turbofan engines. The NPRM published in the Federal Register on 
October 25, 2022 (87 FR 64397). The NPRM was prompted by a report that 
an airplane experienced an uncommanded dual engine shutdown upon 
landing, resulting in compromised braking capability due to the loss of 
engine power and hydraulic systems. A subsequent investigation 
determined that the sequence of the auto-throttle increasing throttle 
to maintain Mach number, immediately followed by pilot command to 
decrease throttle to idle, caused a transient disagreement between 
actual and commanded thrust. This disagreement triggered the thrust 
control malfunction (TCM) detection logic and resulted in dual engine 
shutdown once the weight on wheels signal was activated upon landing. 
The installed EEC FADEC software version latches the fault and allows 
the engine to continue operation as commanded but shuts down the engine 
upon landing. The manufacturer identified the situations that could 
trigger the TCM logic erroneously and updated the EEC FADEC software. 
This software update makes corrective improvements to the TCM logic, 
including revised criteria for triggering the TCM logic and 
establishing criteria that permit the TCM logic to unlatch during 
flight. In the NPRM, the FAA proposed to require removal from service 
of certain EEC FADEC software versions and replacement with a software 
version eligible for installation. The FAA is issuing this AD to 
address the unsafe condition on these products.

Discussion of Final Airworthiness Directive

Comments

    The FAA received one comment, from Air Line Pilots Association, 
International (ALPA). ALPA supported the NPRM without change.

Conclusion

    The FAA reviewed the relevant data, considered the comments 
received, and determined that air safety requires adopting the AD as 
proposed. Accordingly, the FAA is issuing this AD to address the unsafe 
condition on these products. Except for minor editorial changes, this 
AD is adopted as proposed in the NPRM.

Related Service Information

    The FAA reviewed PW Service Bulletin (SB) PW1000G-A-73-00-0054-00A-
930A-D, Issue No. 002, dated June 20, 2022. This service information 
specifies procedures for replacing or modifying the EEC to incorporate 
FADEC software version V2.11.14.

Costs of Compliance

    The FAA estimates that this AD affects 147 engines installed on 
airplanes of U.S. registry.
    The FAA estimates the following costs to comply with this AD:

[[Page 79236]]



                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
                Action                         Labor cost           Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
Upgrade EEC FADEC Software............  2 work-hours x $85 per                $0            $170         $24,990
                                         hour = $170.
----------------------------------------------------------------------------------------------------------------

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:

2022-27-04 Pratt & Whitney: Amendment 39-22289; Docket No. FAA-2022-
1306; Project Identifier AD-2022-01040-E.

(a) Effective Date

    This airworthiness directive (AD) is effective January 31, 2023.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Pratt & Whitney PW1519G, PW1521G, PW1521G-3, 
PW1521GA, PW1524G, PW1524G-3, PW1525G, and PW1525G-3 model turbofan 
engines.

(d) Subject

    Joint Aircraft System Component (JASC) Code 7600, Engine 
Controls.

(e) Unsafe Condition

    This AD was prompted by an uncommanded dual engine shutdown upon 
landing, resulting in compromised braking capability due to the loss 
of engine power and hydraulic systems. The FAA is issuing this AD to 
prevent compromised braking capability due to uncommanded dual 
engine shutdown upon landing. The unsafe condition, if not 
addressed, could result in runway excursion.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Required Actions

    For affected engines with installed electronic engine control 
(EEC) full authority digital engine control (FADEC) software version 
earlier than V2.11.14.1, within 12 months after the effective date 
of this AD, remove the EEC FADEC software and replace with an EEC 
FADEC software version eligible for installation.

(h) Definitions

    For the purpose of this AD, ``EEC FADEC software version 
eligible for installation'' is EEC FADEC software version V2.11.14.1 
or later.

(i) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, ECO 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 local Flight Standards District Office, as 
appropriate. If sending information directly to the manager of the 
certification office, send it to the attention of the person 
identified in paragraph (j) of this AD and email to: [email protected].
    (2) Before using any approved AMOC, notify your appropriate 
principal inspector, or lacking a principal inspector, the manager 
of the local flight standards district office/certificate holding 
district office.

(j) Related Information

    For more information about this AD, contact Mark Taylor, 
Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, 
Burlington, MA 01803; phone: (781) 238-7229; email: 
[email protected].

(k) Material Incorporated by Reference

    None.

    Issued on December 20, 2022.
Christina Underwood,
Acting Director, Compliance & Airworthiness Division, Aircraft 
Certification Service.
[FR Doc. 2022-28091 Filed 12-23-22; 8:45 am]
BILLING CODE 4910-13-P

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