# AD 75-16-11: Rudder Control Cables

- Type: Airworthiness directive
- Status: Current
- Products: Pilatus B4-PC11
- Effective: July 29, 1975
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Glider
- Amendment: 39-2284
- Registered aircraft: 20 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2C52A89A5D2BC7F986256A45006F4451.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/75-16-11

## The airworthiness directive

75-16-11 PILATUS AIRCRAFT LTD: Amdt. 39-2284. Applies to B4-PC11 gliders, serial numbers 141 and subsequent, certificated in all categories. Compliance is required as indicated. To prevent rudder cable chaffing, jamming, or separation accomplish the following: (a) Within 10 hours' time in service after the effective date of this AD, unless already accomplished, visually inspect the rudder control cables for chaffing in that portion adjacent to the crotch strap attachment brackets and repair, or replace as required in accordance with the Pilatus B4- PC11 Maintenance Manual or an FAA-approved equivalent. (b) Within 25 hours' time in service after the effective date of this AD, unless already accomplished, install a polyurethane foam block P/N 112.50.11.065 on the underside of the pilot seat to provide a grooved channel to cover the crotch strap attachment bracket in accordance with the accomplishment instructions set forth in Pilatus Aircraft Service Bulletin No. 1002 datedMay 1974, or an FAA-approved equivalent. This amendment becomes effective July 29, 1975.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS G25EU](https://openairdocs.org/tcds/G25EU): Pilatus Aircraft Limited; names 1 of 3 models: B4-PC11

## 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: 20 (20 by airframe model, 0 by engine model)
- Makers: Pilatus 20

Models with the most aircraft:

- [Pilatus B4-PC11](https://openairdocs.org/model/pilatus-b4-pc11): 20 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/75-16-11/models.md
Every aircraft: https://openairdocs.org/ad/75-16-11/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.