TM 55-1520-228-BD
CHAPTER 14
UTILITY SYSTEM
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. INTRODUCTION
14-1.
SCOPE.
14-2. ASSESSMENT PROCEDURES.
Visually
inspect the damaged de-icing components
a. The de-icing system is the means
to determine the extent of damage and
by which the engine is kept from an
the repair required.
icing condition.
The system consists
of a de-ice switch and a de-ice control
14-3. REPAIR PROCEDURE INDEX.
actuator protected by a 5 amp circuit
breaker. Refer to Figure 14-1.
PARA.
b.
This chapter consists of two BDAR
De-Ice Valve or Control
fixes which can be applied for repair of
Repair. . . . . . . . . . 14-4
the de-icing system components.
Section II. DE-ICE VALVE OR CONTROL
14-4. GENERAL INFORMATION: Damage to
control rod may be repaired by using one
of the following repair options.
OPTION 1:
Splice Repair.
LIMITATIONS: None.
PERSONNEL/TIME REQUIRED:
1 Soldier
2 Hours
MATERIALS/TOOLS REQUIRED:
Flat or Round Piece of Material
(Example: engine cowl hold open rod)
Drill with Bit
No. 8 screws or bolts
PROCEDURAL STEPS:
1.
Drill hole on end of control rod.
Insure that original length of damaged
rod is known. Cut substitute tube to
proper length and drill hole on other
end.
Install substitute tube and secure
with screw or bolts and nuts.
2. Record BDAR action taken. When
mission is complete, as soon as
practical, repair the equipment/system
using standard maintenance procedures.
OPTION 2: Manual Control of Valve.
PERSONNEL/TIME REQUIRED:
1 Soldier
1 Hour
MATERIALS/TOOLS REQUIRED:
0.041 or O.032 Safety Wire
PROCEDURAL STEPS:
1.
Remove damaged control rod from de-ice
valve and control actuator. If extremely
cold weather, secure de-ice valve control
lever in open position by tying the lever
to an adjacent part of the engine nose
area.
If hot weather, secure valve in
closed position with safety wire.
2.
Record BDAR action taken. When
mission is complete, as soon as
practical, repair the equipment/system
using standard maintenance procedures.
14-1
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