AD 2025-02376
Published 2025-02-10 · 15 models · 1,226 US-registered tails affected · Federal Register
Airworthiness Directives; The Boeing Company Airplanes Federal Register ↗
Abstract
The FAA is superseding Airworthiness Directive (AD) 2020-03- 20, which applied to certain The Boeing Company Model MD-11, MD-11F, and 717-200 airplanes; all Model 737-8 and 737-9 airplanes; all Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes; certain Model 747-400 and 747-400F series airplanes; certain Model 757 and 767 airplanes; and all Model 777 airplanes. AD 2020-03-20 required revising the existing airplane flight manual (AFM) to include a limitation to prohibit operations that require less than 0.3 required navigational performance (RNP) within a specified area for airplanes having a certain multimode receiver (MMR) with certain software installed. This AD was prompted by reports from Boeing of simultaneous MMR resets related to an error in calculating Coordinated Universal Time (UTC). This AD requires the actions in AD 2020-03-20, removes an airplane model from the applicability, and would also require installing certain MMR operational software (OPS). The FAA is issuing this AD to address the unsafe condition on these products.
Applicability · by US fleet size
- BOEING 737-8 624 tails
- BOEING 737-9 283 tails
- BOEING 717-200 113 tails
- BOEING 737-900ER 100 tails
- BOEING 777F 43 tails
- BOEING 777-300ER 24 tails
- ROCKWELL INTERNATIONAL 700 10 tails
- BOEING 777-200 8 tails
- BOEING COMPANY THE 767-2C 7 tails
- BOEING 747-400F 4 tails
- DOUGLAS AD-4 3 tails
- BOEING 747-400 2 tails
- BOEING 767-200 2 tails
- BOEING 100 2 tails
- BOEING H-6 1 tails
Federal Register text
Verbatim; the Federal Register publication is the legally binding document. Cite: 90 FR 9189. View on Federal Register ↗
[Federal Register Volume 90, Number 26 (Monday, February 10, 2025)] [Rules and Regulations] [Pages 9189-9197] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2025-02376]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2023-1993; Project Identifier AD-2023-00129-T; Amendment 39-22940; AD 2025-02-07] RIN 2120-AA64
Airworthiness Directives; The Boeing Company Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2020-03- 20, which applied to certain The Boeing Company Model MD-11, MD-11F, and 717-200 airplanes; all Model 737-8 and 737-9 airplanes; all Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes; certain Model 747-400 and 747-400F series airplanes; certain Model 757 and 767 airplanes; and all Model 777 airplanes. AD 2020-03-20 required revising the existing airplane flight manual (AFM) to include a limitation to prohibit operations that require less than 0.3 required navigational performance (RNP) within a specified area for airplanes having a certain multimode receiver (MMR) with certain software installed. This AD was prompted by reports from Boeing of simultaneous MMR resets related to an error in calculating Coordinated Universal Time (UTC). This AD requires the actions in AD 2020-03-20, removes an airplane model from the applicability, and would also require installing certain MMR operational software (OPS). The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective March 17, 2025. The Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD as of March 17, 2025.