AD 82-10-02 R1

82-10-02 R1 ROCKWELL INTERNATIONAL: Amendment 39-4376 as amended by Amendment 39-4436. Applies to Models NA-265-60 modified per STC SA687NW (S/N 306-5, - 6, -12, -24, -50, -71, -109, -116, -119, and -122); NA-265-65, S/N 465-1 through 465-76, and S/N 306-114 airplanes certificated in all categories. Compliance required as indicated unless already accomplished. To reduce the possibility of a flap screwjack actuator malfunction due to bearing failure, accomplish the following:

A. Within the next 50 hours time-in-service after the effective date of this AD and within each additional 300 hours time-in-service, inspect each flap screwjack in accordance with Rockwell International Service Bulletin 81-14 dated December 28, 1981. Replace or repair any flap screwjack not meeting the acceptance criteria in this service bulletin.

B. Model NA-265-65 Sabreliner airplanes are approved for take-offs and landings with zero degree flap settings and may, therefore, be operated with a defective flap screwjack, provided the flap system is deactivated and the airplane operated in accordance with the zero flap performance data in the Airplane Flight Manual SR-77-006.

C. Model NA-265-60 airplanes may be operated with a defective flap screwjack, provided the flap system is deactivated and the following operating limitations are observed:

1. Takeoff must be conducted in compliance with Airplane Flight Manual zero flap requirements.

2. Landing weather minimums are one mile or RVR 5000.

3. Zero flap, dry runway landing distance must be determined by multiplying the factored landing distance shown in the Rockwell International Airplane Flight Manual, Supplement No. SR-81-018, by a factor of one point five.

4. Zero flap, wet runway landing distances must be determined by multiplying the distance obtained in "3." above by a factor of one point one five.

5. Thrust reversers must be operative prior to takeoff.

D. Alternative means of compliance with this AD which provide an equivalent level of safety must be approved by the Chief, Wichita Aircraft Certification Office, Room 238, Terminal Building 2299, Mid-Continent Airport, Wichita, Kansas 67209; telephone (316) 269- 7000.

E. Rework of all flap actuators in accordance with Rockwell International Service Bulletin 82-1 dated June 30, 1982, constitutes terminating action for the requirements of paragraph A, above.

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 from Rockwell International, Sabreliner Division, 6161 Aviation Drive, St. Louis, Missouri 63134. These documents may also be examined at FAA Central Region, Wichita Aircraft Certification Office, Room 238, Terminal Building 2299, Mid-Continent Airport, Wichita, Kansas 67209.

Amendment 39-4376 became effective May 17, 1982.

This Amendment 39-4436 becomes effective September 13, 1982.