# AD 86-24-01: T/R Assembly

- Type: Airworthiness directive
- Status: Current
- Products: Bell Helicopter Textron Canada 206A, 206B and 206L
- Effective: December 15, 1986
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Amendment: 39-5468
- Registered aircraft: 861 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/707BB33039BB672D86256A4E004EEBC0.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/86-24-01

## The airworthiness directive

86-24-01 BELL HELICOPTER TEXTRON, INC.: Amendment 39-5468. Applies to Model 206A, 206B, and 206L helicopters certificated in any category equipped with T/R yoke Part Number (P/N) 206-011-819-101 in combination with T/R crosshead P/N 206-010-741-001 or -003.

Compliance is required as indicated unless already accomplished.

To prevent failure of the T/R pitch links, accomplish the following:

  (a) Within the next 25 hours' time in service, inspect T/R assembly and determine if T/R yoke P/N 206-011-819-101 is installed in combination with T/R crosshead P/N 206-010-741- 001 or -003. If this T/R yoke and crosshead combination is installed, either:

  (1) Remove T/R yoke P/N 206-011-819-101 and replace it with T/R yoke P/N 206-011-811-009; or

  (2) Remove T/R crosshead P/N 206-010-741-001 or -003 and replace it with T/R crosshead P/N 206-011-855-001 or 206-011-857-001.

  (b) Alternative inspections, modification, or other actions which provide an equivalent level of safety may be used when approved by the Manager, Helicopter Certification Branch, Southwest Region, Federal Aviation Administration, P.O. Box 1689, Fort Worth, Texas 76101.

This amendment becomes effective December 15, 1986.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS H2SW](https://openairdocs.org/tcds/H2SW): Bell Textron Canada Limited; names 3 of 12 models: 206L, 206B, 206A

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 861 (861 by airframe model, 0 by engine model)
- Makers: Bell 822, Bell Helicopter Textron 29, Bell Helicopter Textron Canada 10

Models with the most aircraft:

- [Bell 206B](https://openairdocs.org/model/bell-206b): 790 aircraft (airframe model)
- [Bell Helicopter Textron 206B](https://openairdocs.org/model/bell-helicopter-textron-206b): 29 aircraft (airframe model)
- [Bell 206A](https://openairdocs.org/model/bell-206a): 23 aircraft (airframe model)
- [Bell Helicopter Textron Canada 206B](https://openairdocs.org/model/bell-helicopter-textron-canada-206b): 10 aircraft (airframe model)
- [Bell 206L](https://openairdocs.org/model/bell-206l): 6 aircraft (airframe model)
- [Bell 206B II](https://openairdocs.org/model/bell-206b-ii): 3 aircraft (airframe model)

All 6 models: https://openairdocs.org/ad/86-24-01/models.md
Every aircraft: https://openairdocs.org/ad/86-24-01/aircraft.md

Its text cites no advisory circulars or STCs.

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