TM 1-1520-238-MTF
2-17
Change 3
PROCEDURE
TROUBLESHOOTING
REFERENCE
AFTER STARTING APU (CONT)
c. ENCU – Verify air flow and proper
temperature control through entire
range.
**5. Canopy doors – Secure, verify
CANOPY caution/warning segment
extinguished.
**6. ECS caution/warning segment – Verify
extinguished.
**7. Avionics – On (except doppler). Allow a
two-minute warm-up before test or use.
**8. FC SYM GEN switch – ON.
**9. IHADSS switch – ON as required.
**10. TADS switch – As required. Verify
TADS and PNVS caution/warning
segment extinguished if on.
**11. ADSS switch – On, verify ADS caution
segment extinguishes.
**12. PNVS – As required. Verify TADS and
PNVS caution/warning segment
extinguished.
**13. VDU – On, test and set as required.
**14. FD/LS – Check status.
**14A. Aircraft data – Check and set as
follows:
NOTE
If erroneous magnetic variation data is en-
tered, all heading indications will display er-
roneous readings.
For
and previous FCC software:
B, A9
C, H
C
C, I
C
