TM 1-1510-254-CL
b. OK (green).
4. Rotate switch counterclockwise from L
EXT (DISCH) R EXT (DISCH) -- Check
illumination of:
a. DISCH (yellow).
b. OK (green).
FIRE EXTINGUISHER PRESSURE
A gauge calibrated in PSI is mounted on each extin-
guisher cylinder to determine level of charge, and should
be checked during prelight. Refer to Table P-2.
Engine Fire Extinguisher Gauge
Pressure
TEMP
-40
-29
-18
-06
+04
+16
+27
+38
+48
C
PSI
190
220
250
290
340
390
455
525
605
to
to
to
to
to
to
to
to
to
480
550
635
730
240
275
315
365
420
CABIN/CARGO DOORS
1. Cabin Door -- Check closed and latched as
follows:
a. Safety arm and diaphragm plunger --
Check.
b. Index marks on rotary cam locks (6) --
Check.
2. Cargo Door -- Check closed and latched as
follows:
a. Upper handle -- Check closed and latched
(observe through cargo door latch handle
access cover window).
b. Index marks on rotary cam locks (4) --
Check aligned with indicator windows.
c. Lower pin latch handle -- Check closed
and latched. (Observe through cargo door
lower latch handle access cover window).
P-4 Change 1