AD 79-19-04

79-19-04 SHORT BROTHERS LIMITED: Amendment 39-3552. Applies to Model SD3-30 airplanes, S/Nos. SH 3004, 3005, 3006, 3007, and 3008, certificated in all categories.

Compliance is required prior to the accumulation of 10,000 flights or prior to the accumulation of 25 flights after the effective date of this AD, whichever occurs later, unless already accomplished; and thereafter at intervals not to exceed 10,000 flights.

To prevent fatigue failure of the flap control rods, replace flap control rods, Part Nos. SD3-45-1853 and SD3-45-1855, located immediately aft of wing center section rear spar and part of inner flap mechanism, with new rods of identical part numbers in accordance with Section 2, "Accomplishment Instructions" of Short Brothers Ltd. Service Bulletin SD3-27-14, dated April 28, 1978, or an equivalent approved by the Chief, Aircraft Certification Staff, AEU-100, Europe, Africa, and Middle East Region, Federal Aviation Administration, c/o American Embassy, Brussels,Belgium. For purposes of complying with this AD, a flight is defined as one takeoff and one landing.

This amendment becomes effective October 4, 1979.