# AD 70-01-06: Lateral pitch idler bell crank

- Type: Airworthiness directive
- Status: Current
- Products: Schweizer 269A, 269A-1 and 269B
- Effective: January 17, 1970
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Amendment: 39-921
- Registered aircraft: 134 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/961CAA9789B3CF9A86256A38006BEEAD.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/70-01-06

## The airworthiness directive

70-01-06 HUGHES: Amdt. 39-921. Applies to Model 269A, 269A-1, 269A-2 and 269B helicopters certificated in all categories with P/N 269A7506 lateral pitch mixer idler bellcrank assembly installed.

To insure continued airworthiness of Hughes Model 269A, 269A-1, 269A-2 and 269B helicopters, with P/N 269A7506 lateral pitch mixer idler bellcrank assembly installed, accomplish the following:

  (a) For helicopters equipped with P/N 269A7506 bellcrank assembly having less than 875 hours time in service on the effective date of this AD, remove from service P/N 269A7506 lateral pitch mixer idler bellcrank assembly prior to the accumulation of 900 hours time in service, and mark it permanently and conspicuously to prevent its inadvertent return to service. Replace it with a serviceable P/N 269A7506 or P/N 269A7508 lateral pitch mixer idler bellcrank assembly.

  (b) For helicopters equipped with P/N 269A7506 bellcrank assembly having 875 or more hours' time in service on the effective date of this AD, remove from service P/N 269A7506 lateral pitch mixer idler bellcrank assembly prior to the accumulation of 25 additional hours time in service, and mark it permanently and conspicuously to prevent its inadvertent return to service. Replace it with a serviceable P/N 269A7506 or P/N 269A7508 lateral pitch mixer idler bellcrank assembly.

This amendment becomes effective January 17, 1970.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 4H12](https://openairdocs.org/tcds/4H12): Schweizer RSG LLC; names 3 of 6 models: 269B, 269A-1, 269A

## 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: 134 (134 by airframe model, 0 by engine model)
- Makers: Hughes 133, Schweizer 1

Models with the most aircraft:

- [Hughes 269A](https://openairdocs.org/model/hughes-269a): 97 aircraft (airframe model)
- [Hughes 269B](https://openairdocs.org/model/hughes-269b): 31 aircraft (airframe model)
- [Hughes 269A-1](https://openairdocs.org/model/hughes-269a-1): 5 aircraft (airframe model)
- [Schweizer 269A](https://openairdocs.org/model/schweizer-269a): 1 aircraft (airframe model)

All 4 models: https://openairdocs.org/ad/70-01-06/models.md
Every aircraft: https://openairdocs.org/ad/70-01-06/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.