# AD 66-28-05: Rudder Pedal Support

- 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: November 19, 1966
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-306
- Registered aircraft: 1 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A00FFAE3EE4A483B86256A45006B34BB.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/66-28-05

## The airworthiness directive

66-28-05 PILATUS: Amdt. 39-306, Part 39, Federal Register November 9, 1966. Applies to Model PC-6 Series Airplanes. Compliance required as indicated. To prevent failure of the rudder pedal support, accomplish the following: (a) Within the next 50 hours' time in service after the effective date of this AD, unless already accomplished within the last 50 hours' time in service, and thereafter at intervals not to exceed 100 hours' time in service from the last inspection, until modified in accordance with (b)(3), visually inspect the guide tube welding seams of rudder pedal support, P/N 6232.196 for cracks, using a lamp and mirror. (b) If a crack is found during an inspection required by (a), before further flight, accomplish one of the following or an FAA-approved equivalent - (1) Repair the part in an FAA-approved manner; (2) Replace the part with an unmodified part of the same part number; or, (3) Replace the part with one modified or one repaired and reinforcedin accordance with Swiss Office Federal de l'Air-approved Pilatus Service Bulletin No. 65. This directive effective November 19, 1966.

## 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/66-28-05/models.md
Every aircraft: https://openairdocs.org/ad/66-28-05/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.