Bell OH-58A Technical Manual page 178

TM 55-1520-228-BD
ELECTRICAL AND AVIONICS SYSTEM
11-3. REPAIR PROCEDURE INDEX.
Splicing Unshielded Wires. . . 11-5
Wire Repair Segments,
Unshielded Wires . . . . . . 11-6
Damaged Wire Insulation . . . . 11-7
Shielded Cable Repair . . . . . 11-8
Shielded Cable Repair Segments 11-9
Shield Terminators . . . . . . 11-10
Terminators for Nickle-Plated
Shields ( including
vermillion). . . . . . . . . 11-11
Terminal Boards. . . . . . . . 11-12
Terminal Lugs. . . . . . . . . 11-13
Wire Bundle Tie Wraps. . . . . 11-14
Coax Splice for RG-136/U
and RG-179 B/U . . . . . . . 11-15
Coax Splice for RG-180 B/U,
RG-124/U, RG-142 B/U,
RG-302/U, and RG-303/U . . . 11-16
11-4. GENERAL.
electrical and avionics system battle
damage repair is to restore damaged
circuits which are mission essential.
It is also used to make nonessential
circuits safe. The repair procedures in
this section are designated to quickly
return an aircraft to a flyable con-
dition.
a. Electrical and Avionics Repairs.
Electrical and avionics equipment
receiving significant battle damage will
usually not be repairable.
ment may require replacement to meet
mission requirements. When replacement
for nonessential system units are not
available, the technician should, when
possible, make the necessary repairs or
adjustments on the unit for one more
combat sortie. Avionics wiring, coaxial
cables, and general aircraft wiring can
be repaired using a variety of proce-
dures and materials.
techniques are considered standard for
11-6
PARA.
Section II. ELECTRICAL
The objective of
The equip-
Most of these
Coax Splice for RG-9 B/U,
RG-214/U, RG-225/U, and
RG-393/U . . . . . . . . . . 11-17
Coax Splice for RG-58 C/U,
RG-233/U, RG-59 B/U, and
RG-71 B/U . . . . . . . ..11-18
Component Bridging . . . . . . 11-19
Connector Repair . . . . . . . 11-20
Circuit Protection Device
Repair. . . . . . . . . . . 11-21
Bus Bars . . . . . . . . . . . 11-22
Battery Repair BB-476/A. . . . 11-23
Damaged or Defective Power
Relays. . . . . . . . . . . 11-24
Substitute Emergency Antenna,
Field Expedient. . . . . . . 11-25
Typical Avionics Configuration 11-26
BDAR Kits . . . . . . . . . . .11-27
AND AVIONICS WIRING DAMAGE
temporary repairs.
depicts the major components, cable
routes, and wiring terminations for the
more complex avionics systems.
b. Isolation of Nonessential
Systems. To isolate damaged non-
essential system wiring use crimp-on
end caps, tape, or other insulating
method. Secure wires to structure.
c. BDAR Electrical Wiring System
Repair Definitions and Capabilities.
The BDAR wiring repair set provides
for two types of aircraft electrical
wiring repairs classified as
"PERMANENT," or "TEMPORARY."
(1) A permanent repair returns the
electrical wiring system to full capabi-
lity as manufactured with no degrada-
tion of any system operating charac-
teristics. No periodic inspection or
replacement is required with a permanent
repair.
PARA.
Appendix F lists and