TM 1–1520–238–T–2
2–156.2
Change 7
Table 2–1.
Master Failure Symptom Index (cont)
Failure Symptom
MOC
Reference
RADAR WARNING DISPLAY IS NOT BLANKED
DURING IFF TRANSMISSION (PILOT IFF
TRANSPONDER CONTROL PANEL: MODE 1,
2, AND 3/A TESTS PERFORMED)
TM 11–1520–238–23–2
IFF SYSTEM
RADAR WARNING DISPLAY – FALSE WARNING
SIGNALS DURING IFF INTERROGATION
(ADO)
TM 11–1520–238–23–2
RADAR WARNING
SYSTEM
AN/APR–39A(V)1
(ADO)
RADAR WARNING DISPLAY – FLASHING BOX
AROUND CENTER OF DISPLAY (ADO)
TM 11–1520–238–23–2
RADAR WARNING
SYSTEM
AN/APR–39A(V)1
(ADO)
RADAR WARNING DISPLAY – KNOWN
EMITTERS DISPLAYED AT INCORRECT
BEARINGS (ADO)
TM 11–1520–238–23–2
RADAR WARNING
SYSTEM
AN/APR–39A(V)1
(ADO)
RADAR WARNING DISPLAY – NOT LIGHTED,
SYNTHETIC VOICE PRESENT (ADO)
TM 11–1520–238–23–2
RADAR WARNING
SYSTEM
AN/APR–39A(V)1
(ADO)
RADAR WARNING DISPLAY, ONE STROBE
DOES NOT APPEAR AT 12 O’CLOCK AND
ONE STROBE AT 6 O’CLOCK WITHIN 4
SECONDS (RADAR WARNING CONTROL
UNIT: DSCRM SWITCH SET TO ON AND
SELF TEST SWITCH ACTIONED)
TM 11–1520–238–23–2
INTEGRATED AUDIO
WARNING SYSTEM
(IAWS)
RADAR WARNING DISPLAY SHOWS MORE
THAN FORWARD AND AFT STROBES OR
PARTIAL STROBES (RADAR WARNING
CONTROL PANEL: DSCRM SWITCH SET TO
ON AND SELF TEST KEY PRESSED)(ADN)
TM 11–1520–238–23–2
RADAR WARNING
SYSTEM
AN/APR–39(V)1
(ADN)
RADAR WARNING DISPLAY SHOWS NO
INDICATION (RADAR WARNING CONTROL
PANEL: DSCRM SWITCH SET TO ON AND
SELF TEST KEY PRESSED)(ADN)
TM 11–1520–238–23–2
RADAR WARNING
SYSTEM
AN/APR–39(V)1
(ADN)
RADAR WARNING DISPLAY – TWO TRIANGLES
AT EITHER TOP OR BOTTOM OF DISPLAY
WITH SYMBOL FLASHING IN MORE THAN
ONE QUADRANT (ADO)
TM 11–1520–238–23–2
RADAR WARNING
SYSTEM
AN/APR–39A(V)1
(ADO)
