TM 11-6605-202-12/TO 5N3-3-10-1
SECTION Ill
OPERATION UNDER USUAL CONDITIONS
SECTION CONTENTS
PAGE
GENERAL
STARTING PROCEDURES
MAG MODE PREFLIGHT OPERATION
DG MODE PREFLIGHT OPERATION
INFLIGHT OPERATION
STOPPING PROCEDURE
GENERAL
3-9. During normal operation, the compass set may be operated in the MAG mode or the DG mode. The
following paragraphs describe the starting procedures for both MAG and DG preflight operations. lnflight
operations and stopping procedures are also described.
STARTING PROCEDURES
NOTE
If an abnormal indication is obtained during the starting procedure, MAG mode and DG mode
preflight operation, or the stopping procedure, refer to the troubleshooting chart (para 4-14) for cor-
rective measures.
3-10. Starting procedures are applicable to both the MAG mode and DG mode of operation. Refer to the
appropriate block diagram in Chapter 2 and perform the following procedures:
a. Turn on the aircraft power to the compass set. Refer to the aircraft configuration technical manual
for power-on procedures.
b. Note that the power failure indicator "off" (block diagram 1, Chapter 2) or the power failure meter
"off" (block diagram 2, Chapter 2) disappear.
c.
Note that all panel lights are lighted and that all controls and indicators are clearly visible.
MAG MODE PREFLIGHT OPERATION
3-11. The following procedure provides you with the information needed for preflight operation in MAG
mode.
a. Start the compass set as instructed in paragraph 3-4.
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