NEVER TRY TO TROUBLESHOOT
Test equipment can also be classified by where
EQUIPMENT FROM MEMORY!
it is used. You use line test equipment on the
aircraft to determine a system's operational
By using test equipment instructions and the
readiness and to isolate malfunctions to a
references for equipment under test, you prevent
particular part. Normally, this type equipment is
false findings. You also prevent damage to test
painted yellow to distinguish it from the aircraft
equipment and systems and the loss of time.
equipment.
MA-2 AIRCRAFT ELECTRICAL
POWER TEST SET
Bench test equipment is used in the shop to
isolate malfunctions to a particular module,
The MA-2 aircraft electrical power test set
subassembly, or to the exact resistor, capacitor,
(fig. 2-26) lets you completely test and check all
etc. Occasionally, you will use line test equipment
aircraft ac and dc power generation system parts.
with bench test equipment to perform complete
The test set is of modular construction. consisting
checks of a part. Whenever you use test equip-
of four major assemblies:
ment, follow the instructions in the MIM or other
1. Variable-speed drive
operating instructions for the specific test
2. Control console
equipment, aircraft, or system.
Figure 2-26. -MA-2 aircraft electrical power test set assembly.