# Airworthiness Directives; Bombardier, Inc., Airplanes
> **Rule** · Final rule. · Published 2025-03-04 · Effective 2025-04-08 · 90 FR 11118
## Document
- **Document number:** 2025-03456
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 90 FR 11118
- **Publication date:** 2025-03-04
- **Effective date:** 2025-04-08
- **FAA docket:** Docket No. FAA-2024-2543
## 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.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/03/04/2025-03456/airworthiness-directives-bombardier-inc-airplanes)
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