Table 7- 16.
Malfunction Details
Indications presented
Required
Ref
Aircraft indications
Corrective
to instructor/operator
malfunction
number
and related effects
act ion
and trainee
APU FAIL
22101
Noncorrectable
After starting, APU rpm is
Instructor:
APU FAIL appears
below minimum requirement.
on CRT.
Trainee : APU ON light is
off. FAIL APU light illumi-
nates. APU performs an auto
shutdown. Fault signal
( FD/LS ) .
APU
APU fails to ramp to full
22102
Noncorrectable
Instructor: APU HANG START
HANG START
rpm value (8216).
appears on CRT.
Trainee: APU START light
does not illuminate. FAIL
APU light illuminates. Fault
signals (FD/LS) Apu start and
APU clutch signals (FD/LS)
APU CNTLR.
22103
APU Ng exceeds design
Noncorrectable
Instructor: NO APU FAIL
limits and fails to enter
NG>107
appears on CRT.
auto shutdown.
Trainee: APU FAIL light is
off. No auto shutdown oc-
curs. After 2 minutes (5.0
seconds . APU fails.
Fire condition is present
APU FIRE
22104
Noncorrectable
Instructor:
APU FIRE appears
in APU compartment.
on CRT.
Trainee: APU FIRE PULL HAN
DLE. APU FIRE MASTER CAUTION.
and MASTER CAUTION lights
illuminate.
