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T6-B > T-6 Limits > Flashcards

T-6 Limits Flashcards

1
Q

Battery Start Limitations

A

Do not attempt a battery powered ground start of the battery voltage is below 23.5 volts.

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2
Q

External Power Limitations

A

Do not connect external power if battery voltage is below 22.0 volts.

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3
Q

Takeoff/Max Torque %

A

100 Max

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4
Q

Takeoff/ Max ITT °C

A

820 Max

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5
Q

Takeoff/ Max N1%

A

104 Max

(1) N1 Values presented for PMU ON. With the PMU OFF, N1 may vary from these values.

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6
Q

Takeoff/ Max Np%

A

100 Max

(4) Avoid stabilized ground operation from 62 to 80% Np?
(2) With PMU OFF, permissible maximum Np is 100+/-2%.

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7
Q

Takeoff/ Max Oil Pressure psi

A

90 to 120

(6) Normal oil pressure during steady state conditions is 90 to 120 psi. Operation at oil pressure less than 90 psi at flight idle or above is indicative of oil system malfunction.

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8
Q

Takeoff/ Max Oil Temp °C

A

10 to 105

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9
Q

Idle Torque %

A

1 to 10% (ground)

(9) Allowable torque range with Np stabilized and PCL at IDLE.

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10
Q

Idle ITT °C

A

750 Max

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11
Q

Idle N1%

A 
60 to 61 (ground)
67 Min (flight)

(1) N1 Values presented for PMU ON. With the PMU OFF, N1 may vary from these values.

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12
Q

Idle Np%

A

46 to 50 (ground)

(4) Avoid stabilized ground operation from 62 to 80% Np.

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13
Q

Idle Oil Pressure psi

A

90 Min

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14
Q

Idle Oil Temp °C

A

-40 to 105 (ground)
10 to 105 (flight)
106 to 110 (7)

(7) Acceptable for ground operation at and below 20% torque.

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15
Q

Start ITT °C

A

871-1000 (5 sec)

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16
Q

Start Oil Pressure psi

A

200 Max

17
Q

Start Oil Temp °C

A

-40 Min

18
Q

Transient Torque %

A

132 Max (20 sec)

(8) Torque at 132% is a materials limit above which damage to the engine may occur. Torque above 102% is indicative of a system malfunction.

19
Q

Starter Limitations

A

1st - Motor 20 seconds then, 30-second cooling period
2nd - Motor 20 seconds then, 2-minute cooling period
3rd - Motor 20 seconds then, 5-minute cooling period
4th - Motor 20 seconds then, 30-minute cooling period

20
Q

Generator Limits

A

Inflight: +50 to -2 AMPS
Ground/Inflight Voltage: 28.0 to 28.5 Volts

Note: If generator amperage or voltage is continuously outside this range with the PCL at 80% N1 or greater while on the ground or in flight, notify maintenance after the mission. If generator voltage is continuously below 25.0 V, available battery power is degraded and air cruise and should land as soon as practical.

21
Q

Temperature Limitations

A

Maximum IOAT for start is 80°C

Ground operation is limited to ambient temperatures of -23°C to +43°C. Ground operation during ambient temperatures above 43°C is permitted for up to 15 minutes for the purpose of taxiing the aircraft to park.

22
Q

Propeller Ground Operation Limitations

A

Sustained propeller operation on the ground between 62 and 80% Np is prohibited to prevent damage from ground residence.

23
Q

Maximum Operating Airspeed/Maximum Operating Mach Number

A

316 up to and including 19,020

Mach 0.67 above 19,020

24
Q

Maneuvering Speed Limitations

A

227 KIAS

Full rudder deflection above 150 KIAS, however, will exceed the limits for the rudder control system.

25
Q

Zero G Time Limitations

A

Zero G is limited to 5 seconds maximum

Caution: Holding a zero G-loading for over 5 seconds can cause engine damage and possible engine failure, regardless of Oil Pressure indications.

26
Q

Negative G Time Limits

A

Negative G operation (including inverted) is limited to 60 seconds.

The following sustained negative G limitations ensure recovery of the center section fuel tank:

  1. Negative G maneuvers within 60 seconds followed by 60 seconds upright (positive G) flight before conducting additional negative G maneuvers.
  2. Do not exceed -2.5 G for negative operation longer than 30 seconds.
27
Q

Prohibited Maneuvers

A 
Inverted Stalls
Inverted Spins
Aggravated spins past two turns
Spins with PCL above idle
Spins with landing gear, flaps, or speed brake extended
Spins with PMU off
Spins below 10,000’ PA
Spins above 22,000’ PA
Abrupt cross-controlled (snap) maneuvers
Aerobatic maneuvers, spins, or stalls with a fuel imbalance greater than 50 pounds between wings
Tails slides
28
Q

Symmetric Acceleration Limits

A

+7.0 to -3.5 G’s

Gear and/or flaps extended +2.5 to 0.0 G’s

29
Q

Asymmetric Acceleration Limits

A

Clean +4.7 to -1.0 G’s

Gear and/or flaps extended +2.0 to 0.0 G’s

For uncontrolled rolling maneuvers initiated at -1 G, the maximum bank angle change is 180 degrees.

Note: Exceeding the acceleration limits locks the max (or min) G reading on the PFD at the exceeded value in red text and cannot be reset without maintenance action on the ground.

30
Q

Weight Limitations

A 
Ramp 6950
Takeoff 6900
Landing 6900
Zero fuel 5850
Baggage compartment 80lbs
31
Q

Landing Limitations

A

600 feet per minute (3.7 G’s) when main tires are serviced to normal landing conditions (185 +/- 5 psi)

780 feet per minute (5.1 G’s) when main tires are serviced to maximum landing conditions pressure (225 +/- 5 psi)

32
Q

Crosswind Limitations

A

Dry - 25 knots
Wet - 10 knots
Icy - 5 knots

Max tailwind - 10 knots

33
Q

Icing Limitations

A

Sustained operation in icing conditions is prohibited. The aircraft has been approved only for transit through a 5,000-foot band of light rime ice.

Maneuvers with ice accumulation are restricted to 30° bank angle and 0 to 2 G’s normal acceleration, up to stall warning system activation.

For the landing configuration and during the landing phase, with ice accumulation, approach speed must be increased by 10 KIAS. To ensure safe landing, make sure that sufficient forward cockpit visibility exists from either the front or rear cockpit.

34
Q

Cockpit Pressurization System Limitations

A

Cockpit pressurization schedule limit is 3.6 +/- 0.2 psi

CKPT PX warning illuminates at 3.9 to 4.0 psi

Cockpit DP display changes to red and overpressurization safety valve opens at 4.0 psi

35
Q

Canopy Wind Limitations

A

The canopy shall not be opened on the ground when the surface winds exceed 40 knots

T6-B (4 decks)

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