# Proposed AD FAA-2021-0272: Bombardier, Inc., Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-14-01
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 12, 2021, 86 FR 18921
- Comments due: May 27, 2021
- Became: [AD 2021-14-01](https://openairdocs.org/ad/2021-14-01)
- Docket: FAA-2021-0272 (https://www.regulations.gov/docket/FAA-2021-0272, where comments are filed)
- Project: MCAI-2020-01485-T
- FR document: 2021-07429
- Official PDF: https://openairdocs.org/files/sha256/5c/42/5c428fb0702cf361b6b085ddaea9b35f0ede07f0b497098b8de48f4ca00f02c4 (from https://www.govinfo.gov/content/pkg/FR-2021-04-12/pdf/2021-07429.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/04/12/2021-07429/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2860021EC3A4777E862586B50074D7B6.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0272

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-100-1A10 airplanes. This proposed AD was prompted by a report that certain airplanes have navigation units with outdated magnetic variation (MagVar) tables. This proposed AD would require revising the existing airplane flight

((Page 18922))

manual (AFM) and applicable corresponding operational procedures to update the flight management system (FMS) limitations. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Apr 12, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-07429, comments due May 27, 2021 (https://www.federalregister.gov/documents/2021/04/12/2021-07429/airworthiness-directives-bombardier-inc-airplanes)

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