T-6 By the Numbers (2) Flashcards
Max ITT for start
1000* C
Time for ITT to start rising after fuel flow indication during start
10 seconds
Altitude/Airspeed parameters for ejection seat
0/0
Minimum speed to maintain while maneuvering to intercept ELP
120 KIAS
N1 with engine flameout (speeds below 8% not included)
0% within 5 seconds
Engine out glide speed
125 KIAS
Duration of Emergency O2
10 minutes
Consider rapid descent above this altitude if using emergency O2 to prevent depletion
20,000 MSL
Glide rotates N1 below 8% (indicate 0%) if engine flamed out (oil px = 0 psi)
125 KIAS
Airstart not recommended below
2,000’ AGL
Airstarts are demonstrated below
20,000’ MSL
Altitude lost during airstart procedure (at 125 KIAS glide)
1,200’
Time to complete airstart sequence
40 seconds
Airstart envelope (at or below 15,000’ MSL)
125-200 KIAS
Airstart envelope (above 15,000’ MSL)
135-200 KIAS
Time for prop to unfeather after N1 reaches ~45%
15-20 seconds
PCL to IDLE for PMU off airstart (look for ITT rise w/in 10 seconds or abort)
13% N1
Initial fuel flow during airstart
75-80
Amp reading after airstart
> 30 amps
Time for starter to drain battery if generator is not reset
10 minutes
Time for prop to come out of feather after PROP SYS CB is pulled
15-20 seconds
Minimum altitude uncontrolled ejection
6000 ft AGL
Indications of a steady state spin
120-135 KIAS and AOA 18+
Time standby attitude indicator will provide accurate info after loss of power
9 minutes
Time AUX battery provides STBY instruments/lighting, FIRE 1 and standby UHF
30 minutes
Torque max with CHIP or OIL PX lights illuminated
60%
Normal sustained oil pressure limits
90-120 psi
Time battery will last with but tie open
30 minutes
Generator is considered inoperative
25 volts and ammeter discharging
Reading if battery bus fails
0 volts and 0 amps
Engine fuel pressure below causes boost pump to automatically engage
Max engine time with high pressure fuel pump suction feeding
10 hours
Auto fuel balancing keeps fuel balance within
20 lbs
Fuel imbalance for two minutes triggers FUEL BAL light (fault in auto system)
30 lbs
Level of fuel that triggers L OR R FUEL LO anucnicator
EHYD PX LO light illuminates below
2400+/-150 psi
HYDR FL LO light illuminates below
1 qt
Pressure hydraulic system functions at a reduced capacity and speed
1800 - 2880 psi
Hydraulic pressure within green arc
2880-3120 psi
Minimum altitude for controllability check
6,000’ AGL
Minimum speed during controllability check (or stick shaker or max deflection)
90 KIAS
Add to minimum controllable speed on final with structural change
20 KIAS
Maximum allowable airspeed
316 KIAS/0.67 Mach
Maximum torque for T/O
100%
Maximum torque transient for 20 seconds
131%
Maximum ITT for T/O
820* C
Maximum ITT idle
750* C
Max ITT for start (5 seconds)
1000* C
Max transient ITT (20 seconds)
870* C
Max N1
104%
Max Np, PMU off
100+/-2%
Emergency Max Np
110%
Normal Oil pressure range
90-120 psi
Max oil pressure during start
200 psi
Transient oil pressure range, aerobatics and spins only
40-130 psi
Minimum oil pressure at idle, aerobatics and spins only (5 seconds max)
15 psi
Normal oil temperature range
10* - 1-5*C
Min oil temperature for start
-40* C
Acceptable oil temperature, transient power, 10 minutes max
106-110* C
Normal hydraulic pressure
1800-3000 psi
Starter duty cycle
20 seconds
Cooling period before second start attempt
30 seconds
Cooling period before third start attempt
2 minutes
Cooling period before fourth start attempt
5 minutes
Cooling period before fifth start attempt
30 minutes
Gear/flap extension limit
150 KIAS
Max turbulence penetration airspeed
195 KIAS
Symmetric Vo
227 KIAS
Asymmetric Vo 5 seconds (Intentional zero g limit)
177 KIAS
Symmetric, clean
+7.0 to -3.5 Gs
Symmetric, gear/flaps extended
+2.5 to 0 Gs