Attachment 3
21740 Avionics Maintenance Shop, Depot
A facility for the repair of electronic gear used in aircraft and in aviation facilities.
This category code should be used only at depot level. At other levels of aircraft
maintenance, use 21110 or 21117.
A minimum of 56 gross m2 [600 gross ft2] will be provided in a hangar or in a
separate building adjoining an aircraft maintenance apron for an avionics maintenance
shop. The facility will be provided with humidity control and suitably equipped to
support the repair and storage of electronic gear of aircraft and aviation facilities.
Test areas may be shielded to reduce radio frequency interference. The gross area of
avionics maintenance shop space should be based on the following allowances:
1-30 Aircraft - 56 m2 [600 ft2] (generally located in a hangar shop)
31-50 Aircraft - up to 111 m2 [1,200 ft2] based on 2.75 m2 [30 ft2] for each
additional aircraft above 30
51-100 Aircraft - up to 228 m2 [2,450 ft2] based on 2.34 m2 [25 ft2] for each
additional aircraft above 50
101-150 Aircraft - up to 321 m2 [3,450 ft2] based on 1.86 m2 [20 ft2] for each
additional aircraft above 100
151-450 Aircraft - up to 432 m2 [4,650 ft2] based on 0.37 m2 [4 ft2] for each
additional aircraft above 150
For over 450 assigned aircraft, specific requirements will be justified.
Aggregate space provided for electronics repair in the flight control tower, aircraft
maintenance hangars, and for radio parts storage in aircraft unit parts storage
buildings, as well as other available post facilities will be taken into account in
programming separate new avionics maintenance facilities at an airfield or heliport, to
eliminate duplication of existing facilities. However, consideration will be given to
economy and efficiency where these functions are performed in one central facility.
Table A3.7. Facility Class 4: Supply Facilities,
Category Group 41: Liquid Fuel Storage, Bulk
Category
Item and Allowance
Code
400
SUPPLY FACILITIES
410
LIQUIDS STORAGE, FUEL AND NONPROPELLANTS
411
Liquid Fuel Storage, Bulk
Tanks for bulk storage of liquid fuels.
41121
Jet Fuel Storage, Aboveground
Tanks for the bulk storage of jet aircraft fuels. These tanks are aboveground type used
for storage of fuel prior to its transfer to end-use dispensing stations. For
underground storage use category code 41123. See category code 124-series for
operational fuel storage.
A3-26
Previous Page
