# AD 67-12-05: Pulley Fairleads

- Type: Airworthiness directive
- Status: Current
- Products: Pilatus PC-6, PC-6-H1, PC-6-H2, PC-6/350, PC-6/350-H1, PC-6/350-H2, PC-6/A, PC-6/A-H1 and PC-6/A-H2
- Effective: May 4, 1967
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-387
- Registered aircraft: 1 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F506BB66FEDBB2F286256A45006B3A50.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/67-12-05

## The airworthiness directive

67-12-05 PILATUS: Amdt. 39-387, Part 39, Federal Register April 4, 1967. Applies to Model PC-6 Series Airplanes, Serial Numbers to 632. Compliance required with the next 200 hours' time in service after the effective date of this AD, unless already accomplished. To prevent rubbing and wear of the two pulley flanges as a result of a change in direction of the aileron control system cables in excess of 3 degrees from the plane of their pulleys, install fairleads at the pulley support bracket on bulkhead Number 3 in accordance with Pilatus Service Bulletin No. 68 or later Swiss Federal Air Office-approved issue, or an FAA-approved equivalent. This directive effective May 4, 1967.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 7A15](https://openairdocs.org/tcds/7A15): Pilatus Aircraft Ltd.; names 9 of 15 models: PC-6/350-H1, PC-6/A-H2, PC-6, PC-6/A-H1, PC-6-H2, PC-6-H1, PC-6/A, PC-6/350-H2…

## 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 (1 by airframe model, 0 by engine model)
- Makers: Pilatus 1

Models with the most aircraft:

- [Pilatus PC-6](https://openairdocs.org/model/pilatus-pc-6): 1 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/67-12-05/models.md
Every aircraft: https://openairdocs.org/ad/67-12-05/aircraft.md

Its text cites no advisory circulars or STCs.

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