# Proposed AD FAA-2021-0156: Gulfstream Aerospace Corporation Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-15-03
- Products: Gulfstream Aerospace
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 7, 2021, 86 FR 24546
- Comments due: June 21, 2021
- Became: [AD 2021-15-03](https://openairdocs.org/ad/2021-15-03)
- Docket: FAA-2021-0156 (https://www.regulations.gov/docket/FAA-2021-0156, where comments are filed)
- Project: AD-2020-01594-T
- FR document: 2021-09243
- Official PDF: https://openairdocs.org/files/sha256/a3/15/a3153007488804d8de16824f4588887534428ed8e957ab2ec92ee8e219fbdc09 (from https://www.govinfo.gov/content/pkg/FR-2021-05-07/pdf/2021-09243.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/05/07/2021-09243/airworthiness-directives-gulfstream-aerospace-corporation-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D3148151F1BA2E4E862586D1005EBD2D.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0156

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Gulfstream Aerospace Corporation (Gulfstream) Model GVII- G500 airplanes. This proposed AD results from flap yoke fittings with design features that cause decreased fatigue life. This proposed AD would require replacing the flap inboard and outboard yoke fitting assemblies and establishing a 20,000 flight cycle life limit for the fittings. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- May 7, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-09243, comments due Jun 21, 2021 (https://www.federalregister.gov/documents/2021/05/07/2021-09243/airworthiness-directives-gulfstream-aerospace-corporation-airplanes)

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