T-6B Limitations

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Author:
beardpapa
ID:
157045
Filename:
T-6B Limitations
Updated:
2012-08-27 15:57:02
Tags:
T6B
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Description:
T-6B Engine Operating Limits, Airspeed Limitations, Prohibited Maneuvers, Starter Cycle Limitations, Flight Maneuvering Limitations, Acceleration Limitations, Other
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  1. TAKEOFF/MAX LIMITATIONS
    • TORQUE - 100%
    • ITT MAX - 820 C
    • N1 MAX -104%
    • Np MAX - 100% (With PMU OFF, permissible maximum is 100 +/- 2%)
    • OIL PX - 90 to 120 psi (Normal 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 - 10 to 105 C
  2. IDLE LIMITATIONS
    • ITT MAX - 750
    • N1 MAX - 60% (Ground); 67% (Flight)
    • Np - 46% to 50%
    • Np*- Avoid stabilized ground operations between 62% to 80%.
    • OIL PX - 90 psi minimum
    • OIL TEMP - -40 to 105 (ground); 10 to 105 (flight); 106 to 110 (Acceptable for ground operation at and below 20% torque)
  3. START LIMITATIONS
    • ITT MAX - 1000 C
    • OIL PX - 200 Max
    • OIL TEMP - -40 Min
  4. TRANSIENT LIMITATIONS
    • TORQUE - 131% for 20 seconds (Torque at 131% is a materials limit aboe which damage to the engine may occur. Torque above 102% is indicative of system malfunction)
    • ITT MAX - 870 C for 20 seconds
    • N1 MAX - 104%
    • Np MAX - 102% for 20 seconds (110% permissible at all powers for completion of flight in emergency)
    • OIL PX - 40 to 130 psi (Operation at this range premitted only during aerobatics or spins, and 15 to 40 psi for 5 seconds with PCL at IDLE)
    • OIL TEMP - 106 to 110 C for 10 minutes
  5. MAXIMUM GEAR DOWN (Vle) & FLAP Down (Vfe) AIRSPEED
    150 KIAS
  6. MAX OPERATING (Vmo) / MAX MACH (Mmo)
    316 KIAS / .67 MACH
  7. TURBULENT AIR PENETRATION SPEED, MAX
    • 207 KIAS
    • (180 Reccomended)
  8. PROHIBITED MANUEVERS (11)
    • 1. INVERTED STALLS
    • 2. INVERTED SPINS
    • 3. AGGRAVATED SPINS PAST TWO TURNS
    • 4. SPINS WITH THE PCL ABOVE IDLE POWER
    • 5. SPINS WITH THE LANDING GEAR, FLAPS, OR SPEEDBRAKE EXTENDED
    • 6. SPINS WITH PMU OFF
    • 7. SPIN 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 50LBS BETWEEN WINGS
    • 11. TAIL SLIDES
  9. The aircraft has been approved only for transit through ______ feet of _________ ice.
    5000 feet of light rime ice
  10. Manuevers with ice accumulation are restricted to ___ AOB and ____ to ___ G's.
    • 30 AOB
    • 0 to 2 G's
  11. For the landing configuration and during the landing phase, with ices accumulation, approach speed must be increased by _____.
    10 KIAS
  12. MINIMUM BATTERY VOLTAGE
    22 VOLTS
  13. HYDRAULIC CAUTION
    LESS THAN 1800 PSI, GREATER THAN 3500 PSI
  14. FUEL CAUTION LIGHT
    <110LBS IN RESPECTIVE WING TANK
  15. COCKPIT PRESSURIZATION SCHEDULE LIMIT
    3.6 +-0.2 PSI
  16. STARTER CYCLE LIMITATIONS
    STARTER DUTY CYCLE LIMITED TO FOUR 20 SEC CYCLES

    • COOLING PERIODS:
    • 1. 30 SEC
    • 2. 2 MINUTES
    • 3. 5 MINUTES
    • 4. 30 MINUTES

    (then repeat from 1)
  17. INVERTED FLIGHT TIME
    15 Seconds
  18. INTENTIONAL ZERO G FLIGHT TIME
    5 seconds
  19. SYMMETRIC CLEAN ACCELERATION
    +7.0 to -3.5 Gs
  20. SYMMETRIC GEAR & FLAPS EXTENDED ACCELERATION
    +2.5 TO 0.0 Gs
  21. ASYMMETRIC CLEAN ACCELERATION
    +4.7 to -1.0 Gs
  22. ASYMMETRIC GEAR & FLAPS EXTENDED
    +2.0 to 0.0 Gs
  23. UNCOORDINATED ROLLING MANEUVERS INITIATED AT ____Gs, MAX BANK ANGLE CHANGE IS _______ DEGREES
    • -1.0 Gs
    • 180 degrees
  24. MIN VOLTAGE FOR BATTERY START
    23.5 VOLTS
  25. MAX CROSSWIND COMPONENT FOR DRY RUNWAY
    25 KNOTS
  26. MAX CROSSWIND COMPONENT FOR WET RUNWAY
    10 KNOTS
  27. MAX CROSSWIND COMPONENT FOR ICY RUNWAY
    5 KNOTS
  28. MAX TAILWIND COMPONENT FOR TAKEOFF
    10 KNOTS
  29. Generator Limitations
    +50 to -2 Amps
  30. If generator voltage is continuously below ____ volts, available battery power is degraded and aircrews should land as soon as practicable.
    25.0
  31. Propeller Rotational Overspeed Limitation
    110%
  32. Full rudder deflection above _____ KIAS will exceed the limits for the rudder control system.
    150
  33. CG must be calculated when:
    • Solo Pilot (with gear) > 260lbs
    • Rear Pilot (with gear) > 260lbs
    • Combined Crew (with gear) > 500lbs
    • Overwing Refueling >1100lbs
    • Baggage >10lbs
  34. Weight Limitations;
    Max Ramp
    Max T/O
    Max LDG
    Max Zero Fuel
    Max Weight in Baggage Compartment
    • Max Ramp: 6950lbs
    • Max T/O: 6900lbs
    • Max LDG: 6900lbs
    • Max Zero Fuel: 5850lbs
    • Max Weight in Baggage: 80lbs
  35. Maximum rate of descent at touchedown:
    780 fpm (when tires are serviced to maximum landing conditions: 225+/-5 psi).
  36. Ground Operationis limited to ambient temperatures of _____ to  ______.
    -23C to +43C
  37. Escape System Limitations
    • 1.Ejection Seats should never be operated with the canopy open
    • 2. 103-231 lbs nude body weight
    •       - lightweight: spinal injury
    •       - heavyweight: PLF injury
    • 3. Mountainous Terrain> 8000ft: Use MOR handle

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