# AD 67-08-03: Cyclic Control Bracket

- Type: Airworthiness directive
- Status: Current
- Products: Hiller UH-12D and UH-12E
- Effective: March 9, 1967
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Amendment: 39-361
- Registered aircraft: 128 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6AE495F96A337AB586256A38005F916B.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/67-08-03

## The airworthiness directive

67-08-03 FAIRCHILD-HILLER: Amdt. 39-361 Part 39 Federal Register March 4, 1967. Applies to Models UH-12D and UH-12E Helicopters.

Compliance required as indicated.

To prevent failure of the attachment of cyclic control bracket P/N 3301-5 to the transmission housing P/N 23542, accomplish the following:

  (a) Within the next 10 hours' time in service after the effective date of this AD, unless already accomplished, inspect the cyclic control bracket attachment bolts for a torque of less than 50 inch-pounds and visually inspect the Rosan inserts in the transmission housing for cracks or any other damage. Replace damaged inserts and inserts where a bolt torque of less than 50 inch-pounds is encountered prior to further flight in accordance with Fairchild-Hiller Service Information Letter No. 3054 of November 4, 1966, or later revision approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.

  (b) Within the next 100 hours' time in service afterthe effective date of this AD, unless already accomplished, remove the Rosan R206SB-8 inserts and install Roson RD206SB-8 inserts in their place and install MS20073-04-10 bolts in accordance with Fairchild-Hiller Service Information Letter No. 3054 of November 4, 1966, or later revisions approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.

This directive effective March 9, 1967.

## Affected data sheets (2) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 4H10](https://openairdocs.org/tcds/4H10): Siam Hiller Holdings Inc.; names 1 of 1 models: UH-12D
- [TCDS 4H11](https://openairdocs.org/tcds/4H11): Siam Hiller Holdings Inc.; names 1 of 2 models: UH-12E

## 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: 128 (128 by airframe model, 0 by engine model)
- Makers: Hiller 125, Hiller-Osborn 2, Hiller-Rogerson Helicopter 1

Models with the most aircraft:

- [Hiller UH-12E](https://openairdocs.org/model/hiller-uh-12e): 103 aircraft (airframe model)
- [Hiller UH-12D](https://openairdocs.org/model/hiller-uh-12d): 22 aircraft (airframe model)
- [Hiller-Osborn UH-12D](https://openairdocs.org/model/hiller-osborn-uh-12d): 2 aircraft (airframe model)
- [Hiller-Rogerson Helicopter UH12E](https://openairdocs.org/model/hiller-rogerson-helicopter-uh12e): 1 aircraft (airframe model)

All 5 models: https://openairdocs.org/ad/67-08-03/models.md
Every aircraft: https://openairdocs.org/ad/67-08-03/aircraft.md

Its text cites no advisory circulars or STCs.

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