# AD 75-17-24: Landing Gear Actuator Brackets

- Type: Airworthiness directive
- Status: Current
- Products: Aermacchi S.205 - 18/R, S.205 - 20/R, S.205 - 22/R, S.208 and S.208A
- Effective: August 20, 1975
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-2329
- Registered aircraft: 24 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FD6F2F82CC0F850986256A55006AE155.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/75-17-24

## The airworthiness directive

75-17-24 SIAI-MARCHETTI: Amendment 39-2329. Applies to Model S.205-18/R, - 20/R, and -22/R airplanes, serial numbers 001 thru 003, 101 thru 399, 4-101 thru 4-282, 4-285, 4- 292, 5-302, 5-303 and 5-406, certificated in all categories, and Model S.208 airplanes, serial numbers 001 thru 003, 1-03 thru 1-15, 2-16 thru 2-27, 2-47 thru 2-50, 4-51, 4-60, 4-62, 369, 3- 100, 4-231, 4-233, 4-256, 4-257, 4-258, certificated in all categories.

Compliance is required as indicated, unless already accomplished.

To detect cracks in the landing gear actuator brackets and prevent bracket failure, accomplish the following:

  (a) Within the next 10 hours' time in service after the effective date of this AD, unless already accomplished within the last 90 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 paragraph (d) of this AD, visually inspect the landing gear actuator bracket P/N 205-6-209-03 installed on the rear side of the No. 5 frame for cracks, in accordance with Instruction a) of the SIAI Marchetti Service Bulletin No. 205B39, dated September 19, 1973, or an FAA-approved equivalent.

  (b) If cracks are found, before further flight, comply with paragraph (d) of this AD.

  (c) If no cracks are found, within 300 hours' time in service after the effective date of this AD, comply with paragraph (d) of this AD.

  (d) Install landing gear actuator bracket reinforcements, P/Ns U.T. 5270-11 and -13, to inside of the landing gear actuator bracket P/N 205-6-209-03 in accordance with Instruction (b) of the SIAI Marchetti Service Bulletin No. 205B39, dated September 19, 1973, or an FAA- approved equivalent.

This amendment becomes effective August 20, 1975.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A9EU](https://openairdocs.org/tcds/A9EU): Aermacchi S.p.A.; names 5 of 7 models: S.208, S.205 - 18/R, S.205 - 22/R, S.208A, S.205 - 20/R

## 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: 24 (24 by airframe model, 0 by engine model)
- Makers: Siai-Marchetti 24

Models with the most aircraft:

- [Siai-Marchetti S.205/22R](https://openairdocs.org/model/siai-marchetti-s-205-22r): 22 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 3 models: https://openairdocs.org/ad/75-17-24/models.md
Every aircraft: https://openairdocs.org/ad/75-17-24/aircraft.md

Its text cites no advisory circulars or STCs.

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