Table 7-16.
Malfunction Details - Continued
Indications presented
Required
Ref
Aircraft indications
Corrective
to instructor/operator
malfunction
number
and related effects
action
and trainee
ADF BEARING
23141
ADF radio cannot lock onto
Noncorrectable
instructor: ADF BEARING
ERROR
signals from radio
ERROR appears on CRT.
facilities.
Trainee : HSI and RMI bear-
ing pointers oscillate 20
from station bearing at a
rate of 6 deg/sec.
DOPPLER
23142
Receiver-transmitter
Noncorrectable:
Instructor: DOPPLER RTA
RTA
backup mode is
appears on CRT.
beam Information is lost.
available.
Trainee: HSI range and NAV
flags drop Into view. Bear-
ing pointer 1 parks at 90
and course deviation bar
centers. CDU MEM light
illuminates. 1553 bus
outputs disabled. After
system test:
MAL light illuminates
DNS display reads:
147 130 000
315
then, display reads:
MN R-00000
