AD 69-03-01

69-03-01 VICKERS VISCOUNT: Amdt. 39-717. Applies to Model 744 Airplanes.

Compliance required as indicated.

(a) For airplanes with inner wing lower spar booms which have accumulated 7,000 or more landings on the effective date of this AD, before further flight, except that the airplane may be flown in accordance with FAR 21.197 to a base where the repair can be performed, replace inner wing lower spar booms with new booms of the same part number.

(b) For airplanes with inner wing lower spar booms which have accumulated less than 7,000 landings on the effective date of this AD, replace inner wing lower spar booms before the accumulation of 7,000 landings with new booms of the same part number.

(c) All new inner wing lower spar booms that are installed in accordance with the requirements of paragraph (a) or (b) of this AD must be replaced before the accumulation of 7,000 landings.

(d) For the purpose of complying with this AD, subject to acceptance by the assignedFAA maintenance inspectors, the number of landings may be determined by dividing each airplane's hours' time in service by the operator's fleet average time from takeoff to landing for the airplane time.

This amendment becomes effective upon publication in the FEDERAL REGISTER and was effective upon receipt for all recipients of the telegram dated January 7, 1969, which contained this amendment.