AIRPLANE
OPERATIONS
MANUAL
NORMAL PROCEDURES
REVISION 37
1-02-13
Page
1
Code
01
AOM-145/1114
POWER UP
APU START RECOMMENDATIONS
For APU start and operation the following is recommended:
Starting cycle:
After First Attempt................................................60 SECONDS OFF
After Second Attempt...........................................60 SECONDS OFF
After Third Attempt................................................ 30 MINUTES OFF
In case of an unsuccessful APU start or if BATT 1 OFF BUS followed
by APU GEN OFF BUS messages are displayed on EICAS, the APU
master switch must be set to OFF position and time intervals as stated
above shall be observed before the next start attempt.
If during start ignition is not detected at about 30% engine speed, the
starter generator is de-energized. When the engine decelerates to
about 5% engine speed, the starter is automatically re-energized for
another start attempt (Swing Start). Swing Start is limited to one time
per start attempt.
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