TM 1–1520–238–T–2
Change 5
2–94.1/(2–94.2 blank)
Table 2–1.
Master Failure Symptom Index (cont)
Failure Symptom
MOC
Reference
HSI COMPASS CARD DOES NOT DISPLAY
CORRECT HEADING
TM 11–1520–238–23–2
NAVIGATION
INSTRUMENTS
HSI COMPASS CARD DOES NOT INDICATE
CHANGES
TM 11–1520–238–23–2
HARS
HSI COURSE BAR DOES NOT CHANGE (ADD)
TM 11–1520–238–23–2
DOPPLER
NAVIGATION
SYSTEM (DNS)
AN/ASN–137 (ADD)
HSI COURSE SET POINTER AND COURSE SET
DISPLAY DO NOT VARY SMOOTHLY AND
READ THE SAME AT ALL POINTS (HSI: CRS
SET CONTROL ADJUSTED)
TM 11–1520–238–23–2
NAVIGATION
INSTRUMENTS
HSI DOES NOT CENTER ON COURSE AND
DOPPLER MEM IS NOT DISPLAYED
(AN/ASN–137) (ADD)
TM 11–1520–238–23–2
DOPPLER
NAVIGATION
SYSTEM (DNS)
AN/ASN–137 (ADD)
HSI EDGE LIGHT DOES NOT LIGHT (PILOT EXT
LT/INTR LT PANEL: INST CONTROL
ROTATED TO BRT)
TM 11–1520–238–23–2
NAVIGATION
INSTRUMENTS
HSI HDG FLAG DOES NOT GO OUT OF VIEW
WITHIN 13 MINUTES (HARS PANEL: ALIGN
SWITCH SET TO NORM)
TM 11–1520–238–23–2
DOPPLER
NAVIGATION
SYSTEM (DNS)
AN/ASN–137
HSI HDG FLAG, RAI OFF FLAG AND RMI OFF
FLAGS ARE IN VIEW OR HARS GO
INDICATION IS NOT DISPLAYED
TM 11–1520–238–23–2
HARS
HSI HDG WARNING FLAG IS VISIBLE (ADC)
AND HARS NO–GO (ADD)
TM 11–1520–238–23–2
HARS
