# Proposed AD FAA-2020-0378: Airbus Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2020-22-20
- Products: Airbus Helicopters
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 13, 2020, 85 FR 20447
- Comments due: June 12, 2020
- Became: [AD 2020-22-20](https://openairdocs.org/ad/2020-22-20)
- Docket: FAA-2020-0378 (https://www.regulations.gov/docket/FAA-2020-0378, where comments are filed)
- FR document: 2020-07669
- Official PDF: https://openairdocs.org/files/sha256/26/af/26af5e178b11f757bbf2eccc9fd08bbceaddd372779b092f609e336882e4c8c6 (from https://www.govinfo.gov/content/pkg/FR-2020-04-13/pdf/2020-07669.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/04/13/2020-07669/airworthiness-directives-airbus-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/089A6632553505D186258549004C0CB6.0001
- Page: https://openairdocs.org/proposed/FAA-2020-0378

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for Airbus Helicopters Model AS350B, AS350B1, AS350B2, AS350B3, AS350BA, AS350C, AS350D, AS350D1, AS355E, AS355F, AS355F1, AS355F2, AS355N, AS355NP, EC130B4, and EC130T2 helicopters. This proposed AD would require visually inspecting each main rotor gearbox (MGB) suspension bar attachment bracket bolt for missing bolt heads. Depending on the outcome of the visual inspection, measuring the tightening torque, removing certain parts, sending photos and reporting information to Airbus Helicopters, and completing an FAA-approved repair would be required. This proposed AD is prompted by a report of a missing MGB suspension bar attachment bolt head. The actions of this proposed AD are intended to address an unsafe condition on these products.

## Notices in this docket

- Apr 13, 2020: Notice of proposed rulemaking (NPRM). (first notice), FR document 2020-07669, comments due Jun 12, 2020 (https://www.federalregister.gov/documents/2020/04/13/2020-07669/airworthiness-directives-airbus-helicopters)

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