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Airworthiness Directive

AD 2021-20-11 86 FR 57560 Active

Federal Aviation Administration · 14 CFR part 39

Requires a one-time inspection of the lower surface of the spherical bearing in the directional control bellcrank assembly to determine if it is properly staked and, depending on the findings, applicable corrective actions.

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FR document
2021-22469
Published
2021-10-18
Effective
2021-11-22
Models covered
1

Last live check: 2026-10-04

Printed from https://aircraftdirectives.com/ad/2021-20-11 · AircraftDirectives restates official FAA and manufacturer records; the official sources named on this sheet control. Not an airworthiness determination.

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AD

2021-20-11

FR doc 2021-22469 · 86 FR 57560

AD 2021-20-11Published 2021-10-18Effective 2021-11-22

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 a one-time inspection of the lower surface of the spherical bearing in the directional control bellcrank assembly to determine if it is properly staked and, depending on the findings, applicable corrective actions.

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 reports of incorrectly staked spherical bearings in the directional control bellcrank assembly. This AD requires a one-time inspection of the lower surface of the spherical bearing in the directional control bellcrank assembly to determine if it is properly staked and, depending on the findings, applicable corrective actions. For certain helicopters, this AD also requires repetitive inspections and, depending on the findings, applicable corrective actions. This AD also provides a terminating action for the repetitive inspections. 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