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Navy Flight School: Primary > T-6B Operational Limits > Flashcards

T-6B Operational Limits Flashcards

1
Q

Engine Operating Limits for Takeoff/Max Power Setting

A

Torque %: 100 MAX

ITT (°C) Max: 820 MAX

N₁ %: 104 MAX

Nₚ %: 100 MAX
* (With PMU off, permissible maximum Nₚ is 100 +/- 2%)

Oil Pressure (psi): 90 to 120
* (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)

Oil Temp (°C): 10 to 105

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2
Q

Engine Operating Limits for Idle Power Setting

A

Torque %: 1 to 10% (ground)
* (Allowable allowable torque range with Np stabilized and PCL at IDLE)

ITT (°C) Max: 750 MAX

N₁ %: 60 to 61 (ground) / 67 Min(flight)

Nₚ %: 46 to 50 (ground)

Oil Pressure (psi): 90 Min

Oil Temp (°C): -40 to 105 (Grnd),10 to 105 (Flt),106 to 110 (Acceptable for ground operation at and below 20% torque)

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3
Q

Engine Operating Limits for Start Power Setting

A

ITT (°C) Max: 871 - 1000 (for 5 sec)

Oil Pressure (psi): 200 Max

Oil Temp (°C): -40 Min

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4
Q

Engine Operating Limits for Transient Power Setting

A

Torque %: 101-107 MAX (for 5 sec)
* (Torque at 132% is a materials limit above which damage to the engine may occur. Torque above 102% is indicative of a system malfunction)

ITT (°C) Max: 821 - 870 (for 20 sec)

N₁ %: 104 MAX

Nₚ %: 110 (for 20 sec)
* (Permissible at all powers for completion of in-flight emergency)

Oil Pressure (psi): 40 to 130
* (Operation in this range permitted only during aerobatics or spins, and 15 to 40 psi for 5 seconds with PCL at IDLE.)

Oil Temp (°C): 106 to 110 (for 10 minutes)

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5
Q

(2) With PMU OFF, permissible maximum Nₚ is ____.

A

100 +/- 2%

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6
Q

(4) Avoid stabilized ground operation from ____ Nₚ.

A

62 to 80%

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7
Q

(5) Operation in this range permitted only during aerobatics or spins, and ____ to ____ psi for ____ seconds with PCL at IDLE.

A

15 to 40 psi for 5 seconds

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8
Q

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

A

90 to 120 psi

90 psi

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9
Q

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

A

20%

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10
Q

(8) The PMU will govern maximum torque at ____. Torque above ____ at a constant PCL setting and steady flight is indicative of a governing system malfunction.

A

100 +/- 2%

102%

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11
Q

Maximum Airspeed Gear Down (Vle) and Flap Down (Vfe)

A

150 KIAS

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12
Q

Max Operating (Vmo) Speed

A

316 KIAS

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13
Q

Max Mach (Mmo)

A

0.67 MACH

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14
Q

Turbulent Air Penetration Speed, Maximum:

A

207 KIAS

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15
Q

T-6B Prohibited Maneuvers

A
  1. INVERTED STALLS
  2. INVERTED SPINS
  3. SPINS WITH PCL ABOVE IDLE
  4. SPINS WITH THE LANDING GEAR, FLAPS, OR SPEEDBRAKE EXTENDED
  5. SPINS WITH PMU OFF
  6. AGGRAVATED SPINS PAST TWO TURNS
  7. SPINS BELOW 10,000 FEET PRESSURE ALTITUDE
  8. SPINS ABOVE 22,000 FEET PRESSURE ALTITUDE
  9. ABRUPT CROSS-CONTROLLED (SNAP) MANEUVERS
  10. AEROBATIC MANEUVERS, SPINS, OR STALLS WITH A FUEL IMBALANCE GREATER THAN 50 POUNDS BETWEEN WINGS
  11. TAIL SLIDES
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16
Q

Minimum Battery Voltage

A

22.0 VOLTS

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17
Q

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

A

5000 feet

LIGHT RIME

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18
Q

Hydraulic Caution

A

< 1800 psi

> 3500 psi

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19
Q

Fuel Caution Light

A

< 110 pounds in respective wing tank

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20
Q

Cockpit Pressurization Schedule Limit

A

3.6 +/- 0.2 psi

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21
Q

Starter Cycle Limitations:

A

STARTER DUTY CYCLE IS LIMITED TO: FOUR 20 SEC CYCLES

COOLING PERIOD AFTER FIRST STARTER CYCLE: 30 SEC

COOLING PERIOD AFTER SECOND STARTER CYCLE: 2 MIN

COOLING PERIOD AFTER THIRD STARTER CYCLE: 5 MIN

COOLING PERIOD AFTER FOURTH STARTER CYCLE: 30 MIN

22
Q

Inverted Flight Limitation

A

60 secs

23
Q

Intentional Zero G Flight

A

5 secs

24
Q

Negative G Operations

A

60 sec

25
Q

Do Not Exceed -2.5 G For Longer Than:

A

30 sec

26
Q

Min. Pos. Gs Upright Before Additional Neg Gs

A

60 secs

27
Q

Symmetric Clean Accel Limit:

A

+7.0 to -3.5 Gs

28
Q

Symmetric Gear & Flaps Extended Limit

A

+2.5 to 0.0 Gs

29
Q

Asymmetric Clean Acceleration Limit

A

+4.7 to -1.0 Gs

30
Q

Uncoordinated Rolling Manuevers Initiated at ____ G Shall Be Limited to a ____ degree bank angle change.

A

-1 G

180°

31
Q

Min Voltage for Battery Start

A

23.5 Volts

32
Q

Max Crosswind For Dry Runway

A

25 kts

33
Q

Max Crosswinds For Wet Runway

A

10 kts

34
Q

Max Crosswind For Icy Runway

A

5 kts

35
Q

Max Tailwind Component For Takeoff

A

10 kts

36
Q

Max Fuel Flow

A

799 PPH or less

37
Q

Inflight AMPS Limits/Range

A

-2 to +50 Amps

38
Q

Ground/Inflight Voltage

A

28.0 to 28.5 Volts

39
Q

Max IOAT for Engine Start

A

80°C

40
Q

Max Operating Speed

A

316 KIAS

41
Q

Max Speed w/ Flaps & Gear Extended

A

150 KIAS

42
Q

Max Turbulent Airspeed Penetration

A

207 KIAS

**Recommended 180 KIAS

43
Q

Max Maneuvering Speed

A

227 KIAS

The speed above which full or abrupt control movements could result in structural damage to the aircraft

44
Q

Max Ramp Weight

A

6950 lbs

45
Q

Max Takeoff Weight

A

6900 lbs

46
Q

Max Landing Weight

A

6900 lbs

47
Q

Max Zero Fuel Weight

A

5850 lbs

48
Q

Max Baggage Weight

A

80 lbs

49
Q

Max Fuel Imbalance

A

50 lbs between wings

50
Q

Total Usable Fuel

A

1100 lbs

**From single point refueling method

Navy Flight School: Primary (22 decks)

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