# Proposed AD FAA-2026-8808: Bombardier, Inc., Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Comments due Oct 29
- Products: Bombardier BD-100-1A10
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 14, 2026, 91 FR 58034
- Comments due: October 29, 2026
- Docket: FAA-2026-8808 (https://www.regulations.gov/docket/FAA-2026-8808, where comments are filed)
- Project: MCAI-2025-01393-T
- FR document: 2026-18746
- Official PDF: https://openairdocs.org/files/sha256/bc/24/bc24a814c4346e3dabafc327e295e7e7b9769e2f60e0e21cec26f81f38ae24ae (from https://www.govinfo.gov/content/pkg/FR-2026-09-14/pdf/2026-18746.pdf)
- Federal Register: https://www.federalregister.gov/documents/2026/09/14/2026-18746/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2026-18746-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2026-8808

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Bombardier, Inc., Model BD-100-1A10 airplanes. This proposed AD was prompted by reports of pitch upset upon autopilot disconnect following engine indication and crew alerting system (EICAS) messages that indicated that the autopilot was holding significant nose up or nose down forces on the elevator. This proposed AD would require revising the existing airplane flight manual (AFM) to change the procedure for the AP STAB TRIM FAIL (C) advisory message from a non- normal procedure to an emergency procedure to provide the flightcrew with emergency procedures to follow to stabilize airspeed in certain conditions. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Sep 14, 2026: Notice of proposed rulemaking (NPRM). (first notice), FR document 2026-18746, comments due Oct 29, 2026 (https://www.federalregister.gov/documents/2026/09/14/2026-18746/airworthiness-directives-bombardier-inc-airplanes)

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