TM 55-2840-231-23
AMBIENT TEMPERATURE
Figure 1-19. Bleed Valve Operation
1-71. FUNCTIONAL TEST SCHEDULE.
Table 1-11 lists the power settings and sequence of events for performing an engine functional test run.
Perform the applicable portions of the test as outlined in table 1-10. The engine must operate within the
limits specified in table 1-9.
Table 1-11. Functional Test Schedule
Setting
No.
1
2
3
4
5
Condition
Start engine (ac-
celerate to idle)
Shut down
Start engine (ac-
celerate to idle)
Takeoff
Idle
Time
(minutes)
5
max
2
2
N1 speed
(%)
62 to 65
62 to 65
62 to 65
N2 speed
(%)
75 to 105
75 to 105
100
75 to 105
GPTOT
°F (°C)
See fig,
1-20
See fig.
1-20
1380
(749)
See fig.
1-20
Torque Press
(psi )
0-11
0-11
100
0-11
D
Change 11
1-153