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Page Title:
Appendix A - T-39 Aircraft Liminations - Cont'd |
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|  STUDENT GUIDE T-39N/G NATOPS
TEMPERATURES
< 0 F
do not attempt battery start
-40 -0C
use fuel heater (fuel starts to freeze below -40 C)
-5 - 20C
turn ram air inlet heat ON (ANTI-ICE)
0 - 43C
normal fuel temperature
60 - 80F
auto range for cabin temp selector
120F
max battery temp for batt start; amber; ISOL
150F
battery switch OFF; red BATT HOT light
130C
CABIN AIR HOT light on
135C
AFT FUS HOT light on
40 - 120C
normal oil temps
515C
max EGT at IDLE
525C
max EGT during start
655C
max continuous EGT
718C
max accel/max takeoff EGT
ELECTRICAL
24 volts
minimum on DC voltmeter prior to battery start
12 volts
minimum on DC voltmeter during battery start
115 +8v
normal inverter voltage
28VDC/800 amp
external power start- requirements
31 - 33v
overvoltage may cutoff generator, reset
90 volts
inverter will go off-line
28VDC/400 amp
generator capacity
26VDC/40 amp-h
battery capacity
1500/1250 va
main/stdby inverter power capacity PRESSURES
9.1 psi
max diff if cabin pressure regulator fails
35 psi
min oil pressure at IDLE
40 - 50 psi
normal oil pressure
900 + 50 psi
thrust reverser accumulator precharge
1500 + 50 psi
norm/aux hydraulic accumulator precharge
1500 - 1800 psi
normal oxygen bottle pressure
2000 + 100 psi
HYD PWR PRESS OFF light on
2500 - 2700 psi
oxygen cylinder overpressure
2650 - 3200 psi
normal hydraulic accumulator
2700 psi
HYD PWR PRESS OFF light if more than 1 minute
2800 - 3600 psi
aux hydraulic accumulator
1800 psi
wheelbrake system pressure (metered from 3000)
A-2
AIRCRAFT LIMITATIONS
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