# AD 88-23-03: Tail Rotor Yoke Assembly

- Type: Airworthiness directive
- Status: Current
- Products: Bell Helicopter Textron Canada 206A, 206B, 206B-1, 206L, 206L-1 and 206L-3
- Effective: July 25, 1989
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Amendment: 39-6249
- Registered aircraft: 1,173 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/70DC1201B5DAF0D486256A4E004F4635.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/88-23-03

## The airworthiness directive

88-23-03 BELL HELICOPTER TEXTRON, INC. (BHTI): Amendment 39-6249. Final copy of priority letter AD.

Applicability: All BHTI Model 206A, 206B, 206B-1, 206L, 206L-1, and 206L-3 helicopters certificated in any category, with tail rotor yoke assembly, P/N 206-011-819-101, identified with the following serial numbers:

A - 2009 A - 2010 A - 2023 A - 2070 A - 2073 A - 2077 A - 2078 A - 2079 A - 2084 A - 2087 A - 2133 A - 2144 A - 2150 A - 2167 A - 2173 A - 2189 A - 2195 A - 2198 A - 2203 A - 2213 A - 2219 A - 2221 A - 2223 A - 2227 A - 2229 A - 2234 A - 226 A - 2243 A - 2262

Compliance: Required as indicated, unless already accomplished.

To prevent the failure of the tail rotor yoke assembly, loss of the tail rotor blade, and subsequent loss of control of the helicopter, accomplish the following:

  (a) Before further flight, inspect the aircraft to determine the part number and serial number of the installed tail rotor yoke assembly. If P/N 206-011-819-101 with a serial number listed above is installed on the helicopter, remove and replace the assembly with an airworthy yoke assembly.

  (b) An alternate method of compliance or adjustment of the compliance time, which provides an equivalent level of safety, may be used when approved by the Manager, Rotorcraft Certification Office, Rotorcraft Directorate, Aircraft Certification Service, FAA, Southwest Region.

  (c) In accordance with FAR 21.197 and 21.199, flight is permitted to a base where removal and replacement of the affected tail rotor yoke required by this AD may be accomplished.

This amendment (39-6249, AD 88-23-03) becomes effective on July 25, 1989, as to all persons except those persons to whom it was made immediately effective by Priority Letter AD 88-23-03, issued November 15, 1988, which contained this amendment.

## 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 6 of 12 models: 206L, 206B, 206L-1, 206A, 206L-3, 206B-1

## 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: 1,173 (1,173 by airframe model, 0 by engine model)
- Makers: Bell 981, Bell Helicopter Textron 178, Bell Helicopter Textron Canada 14

Models with the most aircraft:

- [Bell 206B](https://openairdocs.org/model/bell-206b): 790 aircraft (airframe model)
- [Bell 206L-3](https://openairdocs.org/model/bell-206l-3): 159 aircraft (airframe model)
- [Bell Helicopter Textron 206L-1](https://openairdocs.org/model/bell-helicopter-textron-206l-1): 149 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 Helicopter Textron Canada 206L-3](https://openairdocs.org/model/bell-helicopter-textron-canada-206l-3): 4 aircraft (airframe model)
- [Bell 206B II](https://openairdocs.org/model/bell-206b-ii): 3 aircraft (airframe model)

All 9 models: https://openairdocs.org/ad/88-23-03/models.md
Every aircraft: https://openairdocs.org/ad/88-23-03/aircraft.md

Its text cites no advisory circulars or STCs.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.