T-6B Engine Operating Limits Table

Front 1

Takeoff/Max
Torque MAX

Back 1

100%

Front 2

Takeoff/Max
ITT MAX

Back 2

820 C

Front 3

Takeoff/Max
N1 MAX

Back 3

104 %

Front 4

Takeoff/Max
Np MAX

Back 4

100 %

Front 5

Takeoff/Max
Oil Pressure ____ to ____

Back 5

90 to 120 psi

Front 6

Takeoff/Max
Oil Temp ___ to ___

Back 6

10 to 105 C

Front 7

Idle
Torque ___ to ___
(ground)

Back 7

3 to 8 %

Front 8

Idle
ITT MAX

Back 8

750 C

Front 9

Idle
N1
Ground ___ to ___
Flight ___ min

Back 9

60 to 61 (flight) %
67 (ground) %

Front 10

Idle
Np ___ to ___
(ground)

Back 10

46 to 50 %

Front 11

Idle
Oil Pressure ___ min

Back 11

90 psi min

Front 12

Idle
Oil Temp
Ground ___ to ___
Flight ___ to ___
Ground below ___ TQ ___ to ___

Back 12

-40 to 105 C
10 to 105 C
20% TQ from 106 to 110 C

Front 13

Start
ITT MAX
____ for ___ sec

Back 13

1000 C for 5 sec

Front 14

Start
Oil Pressure ___ max

Back 14

200 psi max

Front 15

Start
Oil Temp ___ min

Back 15

-40 C min

Front 16

Transient
Torque MAX for ____ sec

Back 16

131 % for 20 sec

Front 17

Transient
ITT MAX for ___ sec

Back 17

870 C for 20 sec

Front 18

Transient
N1 MAX

Back 18

104 % MAX

Front 19

Transient
Np ___ for ___ sec
___ for emergency

Back 19

102 % for 20 sec
110 % for emergency

Front 20

Transient
Oil Pressure ___ to ___

Back 20

40 to 130 psi

Front 21

Transient
Oil Temp ___ to ___ for ___ minutes
Operations in this range only permitted during ____

Back 21

106 to 110 C for 10 minutes
Aerobatics or spins

Front 22

With PMU OFF, permissible max Np is ____ +/- ____ %

Back 22

100 +/- 2 %

Front 23

Avoid stabilized ground operations from ___ to ___ % Np

Back 23

62 to 80 %

Front 24

Operate from ___ to ___ psi for ___ sec with PCL at IDLE

Back 24

15 to 40 psi for 5 sec

Front 25

Torque at ___ is materials limit
Torque above ___ is indicative of system malfunction

Back 25

131 %
102 %

Front 26

V(LE) and V(FE)

Back 26

150 KIAS

Front 27

V(MO) / M(MO)

Back 27

316 KIAS / 0.67 mach

Front 28

Turbulent air penetration max speed

Back 28

207 KIAS

Front 29

Prohibited Maneuvers

Back 29

1. Inverted stalls
2. Inverted spins
3. Spins with PCL above idle
4. Spins with l/g, flaps, or spd brk extended
5. Spins with PMU OFF
6. Aggravated spins past two turns
7. Spins below 10,000 PA
8. Spins above 22,000 PA
9. Abrupt cross-controlled (SNAP) maneuvers
10. Aerobatic maneuvers, spins, or stalls with fuel imbalance greater than 50 lbs between wings
11. Tail slides

Front 30

The aircraft has been approved only for transit through ____ ft of _____ ice.

Back 30

5000 ft
light rime ice

Front 31

Minimum battery voltage

Back 31

22.0 V

Front 32

Hydraulic caution
< ____ PSI
> ____ PSI

Back 32

1800 psi
3500 psi

Front 33

Fuel caution light
< ___ lbs in respective wing tank

Back 33

110 lbs

Front 34

Cockpit Pressurization schedule limit: ___ +/- ___ psi

Back 34

3.6 +/- 0.2 psi

Front 35

Starter cycle limitations:
Limited to four ____ cycles
Cooling after first ___
Cooling after second ___
Cooling after third ___
Cooling after fourth ___

Back 35

20 sec
30 sec
2 min
5 min
30 min

Front 36

Inverted flight limited to ____ sec

Back 36

15 sec

Front 37

Intentional zero G flight limited to ___ sec

Back 37

5 sec

Front 38

Symmetric clean acceleration limits

Back 38

+7.0 to -3.5

Front 39

Symmetric gear and flaps extended limits

Back 39

+2.5 to 0.0

Front 40

Asymmetric clean limits

Back 40

+4.7 to -2.0

Front 41

Asymmetric gear and flaps extended limits

Back 41

+2.0 to 0.0

Front 42

For uncoordinated rolling maneuvers at ___ G, the max bank angle change is ___ degrees

Back 42

-1 G
180 degrees

Front 43

Min battery voltage for battery start

Back 43

23.5 V

Front 44

Max crosswind for dry runway

Back 44

25 kts

Front 45

Max crosswind for wet runway

Back 45

10 kts

Front 46

Max crosswind for icy runway

Back 46

5 kts

Front 47

Max tailwind for takeoff

Back 47

0 kts