# AD 68-10-06: Horizontal Stabilizer

- 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, PC-6/A-H2, PC-6/B-H2, PC-6/B1-H2 and PC-6/C-H2
- Effective: June 10, 1968
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-599
- Registered aircraft: 3 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D736DA723C04115686256A45006BAA90.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/68-10-06

## The airworthiness directive

68-10-06 PILATUS: Amendment 39-599. Applies to Model PC-6 Series airplanes. Compliance required within the next 200 hours' time in service after the effective date of this AD, unless already accomplished. To prevent horizontal stabilizer stall, install fixed wing spoilers on the trailing edges of the wings in accordance with Pilatus Service Bulletin No. 76, dated November 1967, or later Swiss Federal Air Office approved revision or an equivalent approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa and Middle East Region. This amendment becomes effective June 10, 1968.

## 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 12 of 15 models: PC-6/350-H1, PC-6/B-H2, PC-6/A-H2, PC-6/C-H2, PC-6, PC-6/A-H1, PC-6-H2, PC-6-H1…

## 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: 3 (3 by airframe model, 0 by engine model)
- Makers: Pilatus 3

Models with the most aircraft:

- [Pilatus PC-6/B1-H2](https://openairdocs.org/model/pilatus-pc-6-b1-h2): 2 aircraft (airframe model)
- [Pilatus PC-6](https://openairdocs.org/model/pilatus-pc-6): 1 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/68-10-06/models.md
Every aircraft: https://openairdocs.org/ad/68-10-06/aircraft.md

Its text cites no advisory circulars or STCs.

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