TM 55-1510-220-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
BEFORE STARTING ENGINES (CONT)
c.
Cabin lights switch - As required.
d.
Pilot's static air source - NORMAL.
e.
Ice vane handles (#1 and #2) - In.
f.
Audio control panel - As required.
18.
Copilot's subpanel - Check and set as follows:
a.
Audio control panel - As required.
b.
Fire protection test switch - OFF.
c.
Cabin controller - Set (field elevation + 500 feet).
d.
Rate control - Set (approximately 1 o'clock position).
e.
Cabin pressurization switch - PRESS.
19.
DC GPU - As required.
C11
20.
External power advisory annunciator light - Check for appropriate indication.
21.
Battery switch - ON.
*22. DC power - Check, 24 VDC minimum for battery start, and 28 VDC maximum for GPU start.
23.
AC external power - Connect as required. Check that the EXT AC PWR ON annunciator light on the
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