TM 55-1730-229-34
AG 320A0-MME-000
TO 35C2-3-473-2
TM 1730-34/1
Table 11-1.
Engine Operating Limits (continued)
Limit Requirements
Condition
Observation
Speed:
Full-load governed
100 percent
Rotor
(58,667 rpm)
speed
Full governed speed
99 to 100.5 percent
(58,167 to 59,034 rpm)
limits
Temperature:
125F (52C) max
Inlet Air
275F (135C) max
Oil
Exhaust gas temperature during normal engine operation should
Engine operation at exhaust gas
not exceed maximum limit.
temperatures above maximum limit is evidence of engine mal-
function and possible distress, and appropriate corrective
action should be taken to restore normal operation.
During engine starting below 60 percent rpm:
Exhaust Gas
Exhaust gas temperature(s) (EGT's) above 1600F (870C)
to maximum of 1785F (974C) are allowed for a period
of 10 seconds maximum.
Between 60 percent rpm and 95 percent rpm:
Stabilized operation (Loss of RPM acceleration) which
indicates a "hung start" condition and/or EGT's above
0
1600F (870 C) should not be allowed to exceed a period
of 10 seconds maximum.
APU governed speed operation:
Maximum EGT during governed speed operation is 1350F
(732C) (red line).
Operation above 1255F (679C) (yellow band) should
be minimized and is intended for emergency operation
only. If governed speed operation above 1255F (679C)
is encountered, the reason for overtemperature operation
should be corrected through maintenance actions.
11-3
