TM 1–1520–238–T–2
2–33
Table 2–1.
Master Failure Symptom Index (cont)
Failure Symptom
MOC
Reference
CDU DISPLAYS SDCC WRAPAROUND FAIL OR
SDCC 1553 I/O FAIL MESSAGE (CDU: VAB
NEXT TO DISPLAYED WORD TEST
PRESSED)
TM 11–1520–238–23–2
DOPPLER
NAVIGATION
SYSTEM (DNS)
AN/ASN–137
CDU DISPLAYS SDC FAIL MESSAGE (CDU: VAB
NEXT TO DISPLAYED WORD TEST
PRESSED)
TM 11–1520–238–23–2
DOPPLER
NAVIGATION
SYSTEM (DNS)
AN/ASN–137
CDU DOES NOT ALTERNATELY DISPLAY
ERROR AND 12SVN32620377E12C5 ON
SCRATCH PAD (CDU: VAB NEXT TO
DISPLAYED WORD PPOS PRESSED)
TM 11–1520–238–23–2
DOPPLER
NAVIGATION
SYSTEM (DNS)
AN/ASN–137
CDU DOES NOT ALTERNATELY DISPLAY
UPDATE SPHEROID AND 19 (CDU: 19
ENTERED ON SCRATCH PAD AND VAB NEXT
TO DISPLAYED WORDS FLY TO PRESSED)
TM 11–1520–238–23–2
DOPPLER
NAVIGATION
SYSTEM (DNS)
AN/ASN–137
CDU DOES NOT DISPLAY CDU/DNS GO,
CURRENT HEADING, PITCH AND ROLL
VALUES (CDU: VAB NEXT TO DISPLAYED
WORD TEST PRESSED)
TM 11–1520–238–23–2
DOPPLER
NAVIGATION
SYSTEM (DNS)
AN/ASN–137
CDU DOES NOT DISPLAY FLIGHT PLAN
DICTIONARY PAGE (CDU: FPLN FAB
PRESSED)
TM 11–1520–238–23–2
DOPPLER
NAVIGATION
SYSTEM (DNS)
AN/ASN–137
CDU DOES NOT DISPLAY FLIGHT PLAN
DICTIONARY PAGE 7 (CDU: FPLN FAB
PRESSED)
TM 11–1520–238–23–2
DOPPLER
NAVIGATION
SYSTEM (DNS)
AN/ASN–137
CDU DOES NOT DISPLAY FD/LS STATUS PAGE
NO–GO (CDU: FD/LS FAB PRESSED)
TM 11–1520–238–23–2
DOPPLER
NAVIGATION
SYSTEM (DNS)
AN/ASN–137
CDU DOES NOT DISPLAY FLIGHT PLAN
DICTIONARY PAGE 2 (CDU: DOWN ARROW
KEY PRESSED)
TM 11–1520–238–23–2
DOPPLER
NAVIGATION
SYSTEM (DNS)
AN/ASN–137
