# AD 75-17-08: Canopy Jettisoning Capability

- Type: Airworthiness directive
- Status: Current
- Products: Pilatus B4-PC11
- Effective: August 18, 1975
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Glider
- Amendment: 39-2310
- Registered aircraft: 20 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/514C58D2B295BCDE86256A45006F4A02.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/75-17-08

## The airworthiness directive

75-17-08 PILATUS AIRCRAFT LTD: Amendment 39-2310. Applies to B4-PC11 gliders, certificated in all categories, equipped with canopy limiting lock link. Compliance is required as indicated, unless already accomplished. To ensure canopy emergency jettisoning capability, accomplish the following: (a) Within the next 10 hours' time in service after the effective date of this AD, disconnect the limiting cable. (b) Within the next 50 hours' time in service after the effective date of this AD, alter the canopy limiting cable attachment in accordance with the accomplishment instructions of Pilatus Service Bulletin No. 1001, dated April 1974, or an FAA-approved equivalent. This amendment becomes effective August 18, 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/75-17-08/models.md
Every aircraft: https://openairdocs.org/ad/75-17-08/aircraft.md

Its text cites no advisory circulars or STCs.

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