# Proposed AD FAA-2019-0046: Learjet, Inc. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2019-17-01
- Products: Learjet
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 8, 2019, 84 FR 2793
- Comments due: March 25, 2019
- Became: [AD 2019-17-01](https://openairdocs.org/ad/2019-17-01)
- Docket: FAA-2019-0046 (https://www.regulations.gov/docket/FAA-2019-0046, where comments are filed)
- FR document: 2019-01500
- Official PDF: https://openairdocs.org/files/sha256/9a/fc/9afc90be12e447c0e6b84dd67caf07ac5324137be545e16af922bfe920196d3d (from https://www.govinfo.gov/content/pkg/FR-2019-02-08/pdf/2019-01500.pdf)
- Federal Register: https://www.federalregister.gov/documents/2019/02/08/2019-01500/airworthiness-directives-learjet-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AC033EDBE161350D8625839E0054EADF.0001
- Page: https://openairdocs.org/proposed/FAA-2019-0046

## Summary

We propose to supersede Airworthiness Directive (AD) 2017-11- 09, which applies to certain Learjet, Inc. (Learjet), Model 60 airplanes. AD 2017-11-09 requires a one-time inspection of the fuselage skin for corrosion and, as necessary, additional related inspections and corrective actions. Since we issued AD 2017-11-09, we identified an error in the fluorescent dye penetrant inspection of the fuselage skin and an ambiguity in the compliance time for the fluorescent dye penetrant inspection. We are proposing this AD to clarify the compliance time and correct an error for the fluorescent dye penetrant inspection of the fuselage skin.

## Notices in this docket

- Feb 8, 2019: Notice of proposed rulemaking (NPRM). (first notice), FR document 2019-01500, comments due Mar 25, 2019 (https://www.federalregister.gov/documents/2019/02/08/2019-01500/airworthiness-directives-learjet-inc-airplanes)

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