78-10-02 SHORT BROTHERS LIMITED (Formerly Short Brothers & 78-10-02 Short Harland, Ltd.): Amendment 39-3213. Applies to Model SD3-30 airplanes, Serial Nos. SH3004 to SH3013 inclusive, certificated in all categories.
Compliance is required as indicated, unless already accomplished.
To prevent unwanted propeller feathering, accomplish the following:
(a) Within the next 50 hours time in service after the effective date of this AD, visually inspect the electrical wiring between the proximity switch and the main cable loom for chafing, contact with engine case, and for security of clamping.
(b) If, during the inspection required by paragraph (a), chafing, loose clamps, or contact with engine is found, before further flight, except that the airplane may be flown in accordance with the provisions of FAR 21.197 and 21.199 to a base where the modifications required by this AD may be accomplished, correct the fault in accordance with paragraph 1.C.3. of Short Brothers Limited Service Bulletin No. SD3-61-A03, dated December 21, 1977, or an FAA-approved equivalent.
(c) Within 500 hours time in service after the effective date of this AD, accomplish Short Brothers Limited Modification No. 5471 in accordance with Shorts Service Bulletin No. SD3-61-03, dated January 19, 1978 (pages 1 through 4 are dated January 19, 1977) or an FAA- approved equivalent.
(d) Record the accomplishment of the AD in accordance with FAR 91.173.
(e) Equivalent methods of compliance with this AD or adjustment of the inspection intervals required by this AD may be approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa, and Middle East Region, c/o American Embassy, APO New York, 09667, if the request is submitted through an FAA Maintenance Inspector and contains substantiating data to justify the interval or method of compliance for that operator.
This amendment becomes effective May 29, 1978.