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AD 2025-03456

Published 2025-03-04 · 1 model · 124 US-registered tails affected · Federal Register

Airworthiness Directives; Bombardier, Inc., Airplanes Federal Register ↗

Abstract

The FAA is adopting a new airworthiness directive (AD) for all Bombardier, Inc., Model BD-700-2A12 airplanes. This AD was prompted by the discovery that a partial loss of thrust after an engine failure during a required navigation performance authorization required (RNP- AR) approach under certain weight, altitude and temperature (WAT) conditions, may lead to a descent below the specified path guidance. This AD requires a revision to the existing airplane flight manual (AFM), to incorporate updated WAT tables for RNP-AR approach operations. The FAA is issuing this AD to address the unsafe condition on these products.

Applicability · by US fleet size

Federal Register text

Verbatim; the Federal Register publication is the legally binding document. Cite: 90 FR 11118. View on Federal Register ↗

[Federal Register Volume 90, Number 41 (Tuesday, March 4, 2025)] [Rules and Regulations] [Pages 11118-11120] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2025-03456]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2024-2543; Project Identifier MCAI-2024-00342-T; Amendment 39-22969; AD 2025-04-11] RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc., Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all Bombardier, Inc., Model BD-700-2A12 airplanes. This AD was prompted by the discovery that a partial loss of thrust after an engine failure during a required navigation performance authorization required (RNP- AR) approach under certain weight, altitude and temperature (WAT) conditions, may lead to a descent below the specified path guidance. This AD requires a revision to the existing airplane flight manual (AFM), to incorporate updated WAT tables for RNP-AR approach operations. The FAA is issuing this AD to address the unsafe condition on these products.

DATES: This AD is effective April 8, 2025. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of April 8, 2025.