AD 77-05-05

77-05-05 ADS SUPPLY COMPANY, AIR SPARES INTERNATIONAL, INC. AND SPENCER AIRCRAFT INDUSTRIES: Amendment 39-2849 as amended by Amendment 39-2868 and 39-2881 is further amended by Amendment 39-3199. Applies to various unapproved appliances, identified herein by the Boeing part number, sold by or procured through ADS Supply Company, Bellevue, Washington, Air Spares International, Inc., Seattle, Washington, or Spencer Aircraft Industries, Seattle, Washington, and installed in various Boeing model airplanes. Compliance required as indicated. Accomplish the following:

A. Before further flight, except as provided in paragraph F, remove part number 65-52811 - Landing Gear Accessory Unit.

B. Before further flight, except as provided in paragraph G, remove part number 65-52809 - Fire Detection Accessory Unit and part number 69-37307 - Engine and Fire Control Module.

C. By March 18, 1977, remove the following appliances: (Additional dash numbers identify airline configurations.)

Boeing Part No. Unit 65-52801- APU Accessory Unit 65-52807- Flap/Slat Position Switching Unit 69-37335- Fuel System Module Assembly 65-52804- Audio Accessory Unit 65-60211- Landing Gear Accessory Unit 69-37369- Ground Proximity System Test Accessory Module 69-37336- Ground Proximity Aural Warning Accessory Module 65-52805- Flight Instrument Accessory Unit 69-37346- Window and Pitot Heat Module 69-37338- Gyro Switching Panel

D. By April 2, 1977, remove the following appliances: (Additional dash numbers identify airline configuration.)

Boeing Part No. Unit 65-49808- Electrical Power Relay Module 65-52803- Window Heat Accessory Unit 65-52808- Compartment Overheat Accessory Unit 65-52810- Air Conditioning Accessory Unit 69-37314- AC System Generator and APU Module 69-37315- Generator Drive Standby Power Module 69-37317- Hydraulic Pump Module 69-37319- Air Conditioning Module 69-37320- Engine and Wing Anti-Ice Module 69-37324- Cabin Temperature Module 69-55179- Light Dimming Module 69-37344- VHF Navigation and Compass Switching Unit 65-52806- Miscellaneous Solid State Switching Module 69-37357- Thrust Reverser Override Module 69-37352- Door Warning Annunciator

E. By April 8, 1977, remove the following appliances: (Additional dash numbers identify airline configuration.)

Boeing Part No. Unit 65-37568- Landing Gear Accessory Unit 65-60209- Engine Fire Detection Control Unit Assembly 65-24917- Autopilot Accessory Unit 69-37313- Flight Control Module 65-24920- Fire Detector Module 69-37321- Electrical Module Assembly 65-60214- Flight Instrument Accessory Unit

F. Operations with part number 65-52811 - Landing Gear Accessory Unit may continue until March 18, 1977, provided that before further flight a placard is installed adjacent to the speed brake handle stating "DO NOT ARM." Airplanes may be flown in accordance with FAR 21.197 to a maintenance base to accomplish the above.

G. Operations with part number 65-52809 - Fire Detection Accessory Unit and part number 69- 37307 - Engine and APU Fire Control Module may continue until March 18, 1977, provided that before further flight, and daily thereafter, conduct tests in accordance with a procedure available from the Chief, Engineering and Manufacturing Branch, FAA Northwest Region. Airplanes may be flown in accordance with FAR 21.197 to a maintenance base to accomplish the above.

H. By May 6, 1977, remove the following appliances: (Additional dash numbers identify airline configuration.)

Boeing Part No. Unit 69-37339- Stall Warning Test Module 65-79479- Autobrake Accessory Unit 69-37334- Cabin Altimeter and Rate of Climb Module 65-73606- Engine Accessory Unit 65-52812- Autopilot Accessory Unit 65B-46136- Fire Detector Module

I. By May 27, 1977, remove the following appliance: (Additional dash numbers identify airline configuration.)

Boeing Part No. Unit 65-52802-1 Autopilot Switching Unit

J. By May 26, 1978, (notwithstanding the dates of compliance listed in paragraphs A through I above) remove all appliances with Boeing part numbers listed in paragraphs A through I above which have been sold by or procured through Spencer Aircraft Industries (additional dash numbers identify airline configuration).

K. Upon request of the operator, an FAA Principal Inspector, subject to the prior approval of the Chief, Engineering and Manufacturing Branch, FAA Northwest Region, may adjust the compliance schedule in this AD for specific appliances if the request contains substantiating data to justify the increase for that operator.

Amendment 39-2849 deleted Amendment 39-2837, AD 77-04-03.

Amendment 39-2849 became effective March 10, 1977.

Amendment 39-2868 became effective April 7, 1977.

Amendment 39-2881 became effective April 28, 1977.

This Amendment 39-3199 becomes effective May 9, 1978.