79-13-02 RAISBECK: Amendment 39-3499 as amended by amendment 39-3539. Applies to Rockwell Model NA 265-60 airplanes equipped with the Raisbeck Mark Five modification in accordance with STC SA687NW.
A. To prevent possible jamming of the aileron system, before further flight, unless already accomplished, complete the following:
1. Deactivate the flap system by pulling and collaring the circuit breaker which supplies power to the flap motor.
2. Install a placard in full view of the flight crew which reads "FLAP SYSTEM INOPERATIVE."
B. The following operating limitations apply:
1. Landing operations at or above VFR minimums only.
2. Conduct takeoffs in accordance with the Airplane Flight Manual.
3. Add 50 percent to factored landing distance (FAR 121).
4. For landings on wet runways, increase dry runway distance as determined per item 3 by a factor of 15 percent. Thrust reversers must be used.
C. Amendment 39-3499 was effective July 1,1979, and was effective earlier for all recipients of the telegram as amended.
D. Installation of the modifications in accordance with FAA-approved Raisbeck Mark Five Sabreliner Service Bulletin No. 5 (or equivalent modifications approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region) and incorporation of Change I of the FAA-approved Airplane Flight Manual (Raisbeck Report 76-601 for S/N 306-64 and subsequent; and 76-602 for S/Nos. 306-1 through 306-63), constitute terminating action to the requirements of this Airworthiness Directive.
The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer, may obtain copies upon request to The Raisbeck Group, 7777 Perimeter Road South, Boeing Field International, Seattle, Washington 98108. These documents may also be examined at FAA Northwest Region, 9010 East Marginal Way South, Seattle, Washington 98108.
This amendment 39-3539 becomes effective September 4, 1979.