# AD 83-08-07: Propeller Control

- Type: Airworthiness directive
- Status: Current
- Products: Aermacchi F.260, F.260B, S.205 - 18/F, S.205 - 18/R, S.205 - 20/F, S.205 - 20/R, S.208 and S.208A
- Effective: May 9, 1983
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-4643
- Registered aircraft: 14 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2F0A5F47A0AA7461862569AF0076716C.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/83-08-07

## The airworthiness directive

83-08-07 SIAI-MARCHETTI: Amendment 39-4643. Applies to Models S205-18 and S205-20 (serial numbers 1 through 5), S208 and S208A (serial numbers 1 through 4-64), and F260 and F260B (serial numbers 101 through 125, 2-26 through 2-75, 3-76, 3-77 through 3-81, 3-84, 502, 10-09, 20-01, 235, 237 through 243, 247 through 254, and 266 through 286) airplanes certificated in any category.

Compliance: Required as indicated, unless already accomplished.

To detect cracks in the propeller governor arm and preclude possible loss of propeller control, accomplish the following:

  (a) Within the next 25 hours time-in-service after the effective date of this AD, unless already accomplished within the last 25 hours time-in-service, and thereafter at intervals not to exceed 50 hours time-in-service from the last inspection, visually inspect the propeller governor arm with a 5-power magnifier for cracks and breaks in accordance with the following:

  (1) For the Model S205 and S208 airplanes, with "Instructions" paragraph (a), steps 1 through 4, of SIAI-Marchetti Service Bulletin No. 205B43A dated September 16, 1977.

  (2) For the Model F260 and F260B airplanes, with "Instructions" paragraph (a), steps 1 through 4, of SIAI-Marchetti Service Bulletin No. 260B18A dated September 16, 1977.

  (b) If a crack or break is detected as a result of an inspection required by paragraph (a) of this AD, before further flight, replace the propeller governor arm with a serviceable part in accordance with the following:

  (1) For the Model S205 and S208 airplanes with "Instructions" paragraph (c), steps 1 through 10, of the SIAI-Marchetti Service Bulletin No. 205B43A dated September 16, 1977.

  (2) For the Model F260 and F260B airplanes with "Instructions" paragraph (c), steps 1 through 10, of SIAI-Marchetti Service Bulletin No. 260B18A dated September 16, 1977.

  (c) When propeller governor arm, Part No. 260-13-274-01 is installed, the inspections in paragraph (a)of this AD are no longer required.

  (d) Any equivalent means of complying with this AD must be approved by Manager, Aircraft Certification Staff, AEU-100, Europe, Africa, and Middle East Office, FAA, c/o American Embassy, Brussels, Belgium.

This AD supersedes AD 77-14-16, Amendment 39-2959.

This amendment becomes effective on May 9, 1983.

## Affected data sheets (2) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A9EU](https://openairdocs.org/tcds/A9EU): Aermacchi S.p.A.; names 6 of 7 models: S.205 - 18/F, S.208, S.205 - 18/R, S.208A, S.205 - 20/R, S.205 - 20/F
- [TCDS A10EU](https://openairdocs.org/tcds/A10EU): Aermacchi S.p.A.; names 2 of 6 models: F.260B, F.260

## 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: 14 (14 by airframe model, 0 by engine model)
- Makers: Siai-Marchetti 14

Models with the most aircraft:

- [Siai-Marchetti F.260](https://openairdocs.org/model/siai-marchetti-f-260): 7 aircraft (airframe model)
- [Siai-Marchetti F.260B](https://openairdocs.org/model/siai-marchetti-f-260b): 4 aircraft (airframe model)
- [Siai-Marchetti S.205-20F](https://openairdocs.org/model/siai-marchetti-s-205-20f): 1 aircraft (airframe model)
- [Siai-Marchetti S.205-18R](https://openairdocs.org/model/siai-marchetti-s-205-18r): 1 aircraft (airframe model)
- [Siai-Marchetti S 208](https://openairdocs.org/model/siai-marchetti-s-208): 1 aircraft (airframe model)

All 5 models: https://openairdocs.org/ad/83-08-07/models.md
Every aircraft: https://openairdocs.org/ad/83-08-07/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.