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UH-72A LAKOTA LIMITATIONS

  1. MINIMUM FLIGHT CREW
    The minimum flight crew consists of one pilot operating the helicopter from the right crew seat.
  2. MAXIMUM NUMBER OF OCCUPANTS
    11 persons (including flight crew).
  3. MAXIMUM GROSS MASS
    • 3585 kg
    • 7903 lb
  4. FLOOR LOADING LIMITS
    • 600 kg/m2
    • 123 lb/ft2
  5. MAX ALLOWABLE LOAD PER TIE DOWN RING
    • 70 kg
    • 154 lb
  6. VNE FOR OEI OPERATIONS UNDER ALL CONDITIONS
    110 kts
  7. VNE FOR STEADY STATE AUTOROTATIONS UNDER ALL CONDITIONS
    90 kts
  8. MAXIMUM OPERATING ALTITUDE
    18,000' PA
  9. MAXIMUM OPERATING ALTITUDE FOR HOVER IGE/TAKEOFF AND LANDING
    • 18,000' PA or,
    • 18,000' DA, Whichever is less
  10. FLIGHTS WITH CLOSED NACA INLETS PULLED ARE RESTRICTED TO
    30 minutes to prevent avionics overheating
  11. MINIMUM AIR TEMPERATURE (WITHOUT COLD WEATHER KITS)
    -30 deg C
  12. MAXIMUM AIR TEMPERATURE
    +50 deg C
  13. FOR ENGINE START AT OAT BELOW -20deg C USING THE AIRCRAFT BATTERY, THE BATTERY SHALL BE PREHEATED TO:
    -20 deg C
  14. ROTOR LIMITS
    • POWER ON:
    • Min Transient: 85-96% (20 sec)
    • Cont: 96-104%
    • Max Transient: 104-106% (12 sec)
    • Max Continuous Part Pwr TQ =< 2x30%: 106%

    • POWER OFF:
    • Cont: 85-104%
    • Max Transient: 104-110% (12 sec)
  15. MAX TOT STARTING (empty red triangle)
    • FLI: 8.5
    • TOT: 785o
  16. MAX TOT START TRANSIENT (solid red triangle)
    • FLI: 8.5-11
    • TOT: 785-865
    • TIME: 5 sec
  17. AEO TAKEOFF POWER V=< VY (yellow arc)
    • FLI: 8.5-10
    • TRQ: 71-88%
    • TOT: 845o max
    • TIME: 5 sec
  18. AEO MAX TAKEOFF POWER (solid red bar)
    • FLI: 10
    • TRQ: 88%
    • TOT: 845o max
    • TIME: 12 sec
  19. AEO MAX TRANSIENT (solid red circle)
    • FLI: 10.5
    • TRQ: 97%
    • TIME: 12 sec
  20. OEI MAX CONT PWR (dashed yellow line)
    • FLI: 11
    • TRQ: 91.5%
    • TOT: 845o max
  21. OEI 2.5 MIN PWR (dashed red line)
    • FLI: 12
    • TRQ: 125%
    • TOT: 885o
    • TIME: 2.5 min.
  22. OEI MAX TRANSIENT (slashed red circle)
    • FLI: 14
    • TRQ: 140%
    • TIME: 12 sec
  23. ENGINE OIL PRESSURE
    • MINIMUM: 1.3 Bar
    • CAUTION RANGE: 1.3-1.5 Bar
    • CONTINUOUS: 1.5-5.0 Bar
    • MAX CONT: 5.0 Bar
  24. ENGINE OIL TEMPERATURE
    -MINIMUM FOR STARTING-
    -45o C
  25. ENGINE OIL TEMPERATURE
    -MINIMUM FOR POWER APPLICATION-
    -10o C
  26. ENGINE OIL TEMPERATURE
    -MAXIMUM OPERATION TEMP-
    +115o C
  27. VENTILATION LIMITS
    -EXTERNAL POWER-
    • 15 sec on
    • 60 sec off
    • 15 sec on
    • 23 min off
  28. VENTILATION LIMITS
    -ONBOARD BATTERY-
    • 20 sec on
    • 60 sec off
    • 20 sec on
    • 23 min off
  29. MAX CONTINUOUS LOAD PER GENERATOR
    200 Amps
  30. GENERATOR TOTAL MAX CONTINUOUS LOAD
    360 Amps
  31. MAIN TRANSMISSION OIL PRESSURE
    • MINIMUM: 1.0 Bar
    • CAUTION RANGE: 1.0-1.5 Bar
    • CONTINUOUS: 1.5-5.0 Bar
    • MAX CONT: 5.0 Bar
  32. MAIN TRANSMISSION OIL TEMPERATURE
    • CONTINUOUS OPERATION: -10o C ~ +105o C
    • MAXIMUM: +105o C
  33. USABLE FUEL
    1530 lb
  34. HYDRAULIC SYSTEM QUANTITY
    • Sys. 1 ~ 1.0 liters
    • Sys. 2 ~ 1.2 liters
  35. PROHIBITED MANEUVERS
    • 1. Aerobatic maneuvers
    • 2. Intentional full touchdown autos
    • 3. Flight into icing
  36. MAXIMUM WINDS FOR STARTING AND STOPPING
    50 kt
  37. HOVER TURN RATES
    Below 3200 kg
    45o per second
  38. HOVER TURN RATES
    Above 3200 kg
    30o per second
  39. MAST MOMENT LIMITS
    • Maximum: Red bar
    • Caution range: Yellow region
    • Normal range: Left of yellow region
  40. SLOPE OPERATIONS:
    Left skid low
    11o
  41. SLOPE OPERATIONS:
    Right skid low
    6o
  42. SLOPE OPERATIONS:
    Nose up or down
    8o
  43. MAXIMUM AIRSPEED FOR HANDS-ON OPERATION IN CRUISE FOLLOWING AN AFCS FAILURE
    120 kts
  44. MAXIMUM AIRSPEED FOR HANDS-ON OPERATION DURING AN ILS APPROACH FOLLOWING AN AFCS FAILURE
    100 kts
  45. GS MODE SHALL NOT BE ENGAGED ABOVE THE
    Glide slope
  46. MINIMUM HEIGHT FOR HANDS AND FEET-OFF OPERATION DURING TAKEOFF AND APPROACH
    200' AGL
  47. MINIMUM HEIGHT FOR HANDS AND FEET-OFF OPERATION OTHER THAN TAKEOFF AND APPROACH
    500' AGL
  48. MINIMUM AIRSPEED FOR UPPER MODE OPERATION
    60 kts
  49. MINIMUM AIRSPEED FOR IFR APPROACH
    70 kts
  50. MAXIMUM ROTOR RPM FOR ROTOR BRAKE APPLICATION AFTER ENGINES ARE SHUT DOWN
    50%
Author
bnflyin
ID
58629
Card Set
UH-72A LAKOTA LIMITATIONS
Description
AIRCRAFT LIMITATIONS
Updated

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