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Airworthiness Directive

AD 2021-26-08 86 FR 72833 Superseded

Federal Aviation Administration · 14 CFR part 39

Requires removing certain nuts from service, installing newly designed nuts, and applying a specific torque and a torque stripe to each newly installed nut.

Superseded by AD 2022-20-04Federal Register (opens in a new tab)

FR document
2021-27645
Amendment
39-21867
Published
2021-12-23
Effective
2022-01-27
Models covered
1

Last live check: 2026-10-04

Printed from https://aircraftdirectives.com/ad/2021-26-08 · AircraftDirectives restates official FAA and manufacturer records; the official sources named on this sheet control. Not an airworthiness determination.

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

2021-26-08

FR doc 2021-27645 · 86 FR 72833

AD 2021-26-08Published 2021-12-23Effective 2022-01-27

Superseded by 2022-20-04

Supersedence is read from the Federal Register text of the newer AD — the FAA publishes no structured field for it — and names only ADs held in our index.

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 removing certain nuts from service, installing newly designed nuts, and applying a specific torque and a torque stripe to each newly installed nut.

Full official abstract

The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Canada Limited Model 206, 206A, 206A-1, 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 helicopters. This AD was prompted by reports of cracked or missing nuts on the tail rotor drive shaft (TRDS) disc pack (Thomas) couplings. This AD requires removing certain nuts from service, installing newly designed nuts, and applying a specific torque and a torque stripe to each newly installed nut. This AD then requires, after the installation of each newly designed nut, inspecting the torque and, depending on the inspection results, either applying a torque stripe or performing further inspections and removing certain parts from service. Finally, this AD prohibits installing any affected nut on any TRDS Thomas coupling. The FAA is issuing this AD to address the unsafe condition on these products.

More directives for Bell 206 JetRanger / LongRanger

  1. AD 2023-06-05 Airworthiness Directives; Bell Textron Canada Limited Helicopters Effective 2023-05-19
  2. AD 2022-22-08 Airworthiness Directives; Bell Textron Canada Limited (Type Certificate ... Effective 2022-12-23
  3. AD 2022-20-04 Airworthiness Directives; Bell Textron Canada Limited Helicopters Effective 2022-12-23
  4. AD 2021-24-15 Airworthiness Directives; Bell Textron Canada Limited Helicopters Effective 2022-01-18
  5. AD 2021-19-01 Airworthiness Directives; Bell Textron Canada Limited Helicopters Effective 2021-10-13

All Bell 206 JetRanger / LongRanger directives

View on Federal Register (opens in a new tab) Search DRS manually for AD 2021-26-08 (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