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Airworthiness Directive

AD 2021-03-13 86 FR 11415 Active

Federal Aviation Administration · 14 CFR part 39

Requires determining the accumulated retirement index number (RIN) and removing each affected CFB from service before it accumulates 8,000 total RIN.

Federal Register (opens in a new tab)FAA DRS (opens in a new tab)

FR document
2021-03659
Amendment
39-21416
Published
2021-02-25
Effective
2021-04-01
Models covered
1

Last live check: 2026-10-04

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This page is a reference Record, not an airworthiness or compliance determination. Official FAA and manufacturer sources control over our restatement, subject to governing law. Check applicability, current requirements and incorporated documents before acting. The owner or operator remains responsible for airworthiness and required records under 14 CFR 91.403 and 91.417, as applicable. Terms of Use: /terms.

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AD

2021-03-13

FR doc 2021-03659 · 86 FR 11415

AD 2021-03-13Published 2021-02-25Effective 2021-04-01

FAA rule - 14 CFR 39

FAA rule. Compliance with an applicable AD is required under 14 CFR 39.7. Check its effective date, applicability, compliance times and current status.

Requires determining the accumulated retirement index number (RIN) and removing each affected CFB from service before it accumulates 8,000 total RIN.

Full official abstract

The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Canada Limited (type certificate previously held by Bell Helicopter Textron Canada Limited) Model 429 helicopters. This AD was prompted by the introduction of a new life limit for the centrifugal force bearing (CFB). This AD requires determining the accumulated retirement index number (RIN) and removing each affected CFB from service before it accumulates 8,000 total RIN. The FAA is issuing this AD to address the unsafe condition on these products.

More directives for Bell 429

  1. AD 2026-06-02 Airworthiness Directives; Bell Textron Canada Limited Helicopters Effective 2026-04-24
  2. AD 2024-07-51 Airworthiness Directives; Bell Textron Canada Limited Helicopters Effective 2024-06-10
  3. AD 2022-20-11 Airworthiness Directives; Bell Textron Canada Limited Helicopters Effective 2022-11-28
  4. AD 2022-09-07 Airworthiness Directives; Bell Textron Canada Limited (Type Certificate ... Effective 2022-05-31
  5. AD 2022-08-11 Airworthiness Directives; Bell Textron Canada Limited Helicopters Effective 2022-05-27

All Bell 429 directives

View on Federal Register (opens in a new tab) View this AD in FAA DRS (opens in a new tab) Print AD packet (opens the full Federal Register document in a new tab)

Applies to 1 model in our index