APPENDIX D SUBSTITUTE MATERIALS/PARTS

TM 5-4120-394-BD

APPENDIX D

SUBSTITUTE MATERIALS/PARTS

BDAR FIXES SHALL BE USED ONLY IN COMBAT OR FOR

TRAINING AT THE DISCRETION OF THE COMMANDER

(AUTHORIZED TRAINING FIXES ARE LISTED IN APPENDIX E) IN

EITHER CASE DAMAGES SHALL BE REPAIRED BY STANDARD

PROCEDURES AS SOON AS PRACTICABLE.

SECTION I. General

D-1.

General.

Environmental Control Units (ECU), available within the United States and NATO military supply systems,

commercial parts, and captured parts, may be substitutes for the ECU.

ECU's are to be put back in service as soon as possible using the following equipment:

Primary. The correct piece of equipment for the system. (See FO-1.)

Alternate. A piece of equipment that closely matches the primary but will result in reduced

performance. Using the alternate material/parts will have no effect on the durability of the system. There are no

restrictions on the duration of use. (See FO-1.)

Emergency or Expedient. A piece of equipment that can be used for a short period of time only.

These items are a last resort only and will result in both a significant reduction in performance and in serious harm to the

system.

ECU replacement parts are usually identified by NSNs or part numbers which identify the product,

however, specification numbers and product names may also be a means of identifying the product.

D-1/(D-2 blank)