# Proposed AD FAA-2019-0204: Learjet Inc. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2020-11-04
- Products: Learjet
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 13, 2019, 84 FR 20823
- Comments due: June 27, 2019
- Became: [AD 2020-11-04](https://openairdocs.org/ad/2020-11-04)
- Docket: FAA-2019-0204 (https://www.regulations.gov/docket/FAA-2019-0204, where comments are filed)
- FR document: 2019-09689
- Official PDF: https://openairdocs.org/files/sha256/c6/15/c6152d4a252a5cf0c85eafabfea20b2ecc69eaae1657b8694476c7a180b38e95 (from https://www.govinfo.gov/content/pkg/FR-2019-05-13/pdf/2019-09689.pdf)
- Federal Register: https://www.federalregister.gov/documents/2019/05/13/2019-09689/airworthiness-directives-learjet-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EE4739BDA56E8F80862583F9005055B7.0001
- Page: https://openairdocs.org/proposed/FAA-2019-0204

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Learjet Inc. Model 60 airplanes. This proposed AD was prompted by a report of a reverse thrust command accelerating the airplane instead of decelerating the airplane. The acceleration with reverse thrust commanded occurred when the thrust reverser doors were in the stowed position instead of the deployed position. This proposed AD would require installing a Thrust Reverser (T/R) Voice Command Warning System (VCWS) to alert the crew of a T/R malfunction. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- May 13, 2019: Notice of proposed rulemaking (NPRM). (first notice), FR document 2019-09689, comments due Jun 27, 2019 (https://www.federalregister.gov/documents/2019/05/13/2019-09689/airworthiness-directives-learjet-inc-airplanes)

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