| AD Number | 75-21-01 | Status | Active |
| Effective Date | October 13, 1975 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-2378 |
| Product Type | ["Aircraft"] | Product Subtype | ["Small Airplane"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Aermacchi S.p.A. |
| Model(s) | F.260 F.260B |
75-21-01 SIAI-MARCHETTI: Amendment 39-2378. Applies to Models F.260 and 260B airplanes, Serial Numbers 101 thru 125, 2-26 thru 2-56, 3-76, 3-77, 3-80, and 502, except Serial Numbers 112, 2-33, 2-37, 2-43, 2-47, 2-53, and 2-54, certificated in all categories.
Compliance is required within the next 10 hours' time in service after the effective date of this AD, unless already accomplished.
To prevent failure of the landing gear actuator relay and subsequent inability to extend the landing gear by normal electrical means, replace the landing gear actuator relay, P/N 3311- 2(10A), with new relay, P/N MS 24166-D1(50A), and add a circuit breaker, P/N MS 3320-10, in accordance with the accomplishment instructions of SIAI-Marchetti Service Bulletin, S.B. No. 260B5B, dated December 22, 1973, or an FAA-approved equivalent.
This amendment becomes effective October 13, 1975.