# Proposed AD FAA-2020-0710: Air Tractor, Inc. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-05-14
- Products: Air Tractor
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 28, 2020, 85 FR 45347
- Comments due: September 11, 2020
- Became: [AD 2021-05-14](https://openairdocs.org/ad/2021-05-14)
- Docket: FAA-2020-0710 (https://www.regulations.gov/docket/FAA-2020-0710, where comments are filed)
- FR document: 2020-16209
- Official PDF: https://openairdocs.org/files/sha256/49/ef/49ef307817e6212a7eacd440552287dcf6f70ee16a2cce154e3d10945c6900ce (from https://www.govinfo.gov/content/pkg/FR-2020-07-28/pdf/2020-16209.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/07/28/2020-16209/airworthiness-directives-air-tractor-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B88EE390F334876A862585B30047AEBD.0001
- Page: https://openairdocs.org/proposed/FAA-2020-0710

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Air Tractor, Inc. (Air Tractor) Models AT-250, AT-300, AT-301, AT-302, AT-400, AT-400A, AT-401, AT-401A, AT-401B, AT-402, AT-402A, AT- 402B, AT-501, AT-502, AT-502A, AT-502B, AT-503, AT-503A, AT-504, AT- 602, AT-802, and AT-802A airplanes. This proposed AD was prompted by reports of cracks in the flap torque tube actuator attachment brackets that may cause the flap actuator to detach from the flap torque tube. This proposed AD would require repetitive visual and dye penetrant inspections of the flap actuator attachment bracket welds for cracks and replacement if cracks are identified. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jul 28, 2020: Notice of proposed rulemaking (NPRM). (first notice), FR document 2020-16209, comments due Sep 11, 2020 (https://www.federalregister.gov/documents/2020/07/28/2020-16209/airworthiness-directives-air-tractor-inc-airplanes)

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