# Proposed AD FAA-2021-0783: Bell Textron Canada Limited (Type Certificate Previously Held by Bell Helicopter Textron Canada Limited) Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-24-04
- Products: Bell Textron Canada
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 20, 2021, 86 FR 52109
- Comments due: November 4, 2021
- Became: [AD 2021-24-04](https://openairdocs.org/ad/2021-24-04)
- Docket: FAA-2021-0783 (https://www.regulations.gov/docket/FAA-2021-0783, where comments are filed)
- Project: 2019-SW-009-AD
- FR document: 2021-19964
- Official PDF: https://openairdocs.org/files/sha256/d8/f0/d8f0f74dc2625c05f1204b096a3b5e838876d98f90effcecc3f1ab77aa50e954 (from https://www.govinfo.gov/content/pkg/FR-2021-09-20/pdf/2021-19964.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/09/20/2021-19964/airworthiness-directives-bell-textron-canada-limited-type-certificate-previously-held-by-bell
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/600CDC2C56D76F8A862587560055F14E.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0783

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Bell Textron Canada Limited (type certificate previously held by Bell Helicopter Textron Canada Limited) Model 505 helicopters. This proposed AD was prompted by the determination that reducing the pressure altitude limitations for certain fuel types is necessary. This proposed AD would require revising the existing Rotorcraft Flight Manal (RFM) for your helicopter. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Sep 20, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-19964, comments due Nov 4, 2021 (https://www.federalregister.gov/documents/2021/09/20/2021-19964/airworthiness-directives-bell-textron-canada-limited-type-certificate-previously-held-by-bell)

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