S70A-9 Limits

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Anonymous
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221263
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S70A-9 Limits
Updated:
2013-05-26 23:27:49
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S70A Limits Blackhawk
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S70A-9 Limits
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  1. Engine %RPM
    • 12 second Transient .................................106 - 121
    • Maximum................................................105
    • Transient .................................................102 - 105
    • Continuous ..............................................96 - 101
    • Transient .................................................92 - 95
    • Minimum except for Idle and Transient...............................91

    • Avoid operation in 20% to 40% and 60% to 90% ranges except during
    • start and shutdown.
  2. Engine TGT Temp (°C)
    • 12 second Transient ................................ 920 - 965
    • 2.5 minute OEI Transient 
    •       (Contingency Power)..........................884 – 919
    • 10 minute Limit ....................................... 870 – 883
    • Maximum Start Limit ..............................869
    • 30 minute Limit ....................................... 829 – 869
    • Normal ....................................................0 – 828
  3. Engine Ng Speed (%Ng)
    • Ng Speed (%Ng)
    • Maximum................................................105
    • 12 second Limit .......................................103 – 105
    • 30 minute Limit ....................................... 100 – 102
    • Continuous ..............................................0 – 99
  4. Engine Oil Temperature (°C)
    • Maximum ...............................................150
    • 30 minute Limit ....................................... 136 – 150
    • Continuous .............................................. -50 – 135
  5. Engine Oil Pressure (PSI)
    • Maximum................................................120
    • Precautionary...........................................101 – 120
    • Continuous at:
    •     90% Ng or above...............................35 – 100
    •     Below 90% Ng...................................22 – 100
  6. Engine Starter Limits
    At ambient temperature of +16°C and below, two consecutive startcycles may be made, followed by a 3 minute rest period, followed by two additional consecutive start cycles. A 30 minute rest period is then required before any additional starts.

    At temperatures of +17°C to +52°C, two consecutive start cycles may be made. A 30 minute rest period is then required before any additional start cycles. Engine Start Limits Crossbleed starts shall not be attempted unless: a. the anti-ice light is not illuminated; b. operating engine is at 90% Ng or above; and c. rotor speed is at 100% RPMR.
  7. Fuel (lb)
    • Normal ....................................................201 – 1 600
    • Precautionary...........................................0 – 200
  8. Main Rotor (%RPMR)
    • Power On:
    • Transient 101% — 107%
    • Continuous 95% — 101%
    • Transient 91% — 95%

    • Power Off (autorotation):
    • Maximum 110% (120% for MTF)
    • Transient 105% — 110%
    • Normal 90% — 105%
  9. Rotor Brake Operating Limits
    • Rotor brake shall not be applied with engine(s) operating and rotor turning except during an emergency:
    • Routine stops will be with engine(s) off and Nr below 40%.
    • Maximum rotor speed for rotor brake application ............ 76% RPM.
    • Minimum rotor brake pressure for engine start ................ 450 psi.
  10. %TRQ - Dual Engine
    • Dual Engine:
    • Maximum...........................................150
    • 10 second Limit..................................121 - 150
    • Continuous .........................................0 - 120
  11. %TRQ - Single Engine
    • Single engine:
    • Maximum...........................................150
    • 10 second Limit..................................135 - 150
    • Continuous .........................................0 - 134
  12. Transmission Oil Temperature (°C)
    • Maximum ...............................................120
    • 30 minute Limit .......................................106 – 120
    • Continuous ..............................................-50 – 105
  13. Transmission Oil Pressure (PSI)
    • Maximum................................................130
    • Precautionary...........................................66 – 130
    • Continuous ..............................................31 – 65
    • Idle and Transient ....................................20 – 30
  14. AIRSPEED LIMITATIONS
    • The flight speed limit for all sidewards/rearwards flight is 35 kts.
    • Additional airspeed limits not shown on the chart are:
    • a. External stores attached .............................170 KIAS.
    • b. One engine inoperative ...............................130 KIAS.
    • c. Autorotation at gross weight of:
    • (1) 16 825 pounds or less.....................150 KIAS.
    • (2) 16 825 to 20 250 lbs.......................130 KIAS.
    • (3) greater than 20 250 lbs ..................125 KIAS.
    • d. Maximum airspeed for SAS(s) inoperative are:
    • (1) One SAS inoperative .....................170 KIAS.
    • (2) Two SAS inoperative.....................150 KIAS.
    • (3) Two SAS inoperative in IMC.........140 KIAS.
    • e. Maximum airspeeds for hydraulic pump(s) inoperative are:
    • (1) One pump inoperative .................. 170 KIAS.
    • (2) Two pump inoperative .................. 150 KIAS.
    • (3) Two pumps inoperative in IMC .... 140 KIAS.
    • f. Maximum airspeeds for the positioning or adjustment of aircraft lights.
    • (1) Lights extended and static ............. 180 KIAS.
    • (2) Landing light extension or retraction 130 KIAS.
    • (3) Search light extension or positioning/retraction....................................... 100 KIAS.
    • g. Maximum airspeed for:
    • (1) Loadmaster window fully open ..... 170 KIAS.
    • (2) Cabin door fully open ................... 145 KIAS.
    • (3) Opening/closing cabin door ........... 80 KIAS.
  15. Airspeed Limitation Following Failure of the Automatic
    Stabilator Control System
    • Manual Control Available. If the automatic stabilator control system fails in flight and automatic operation cannot be restored:
    • a. The stabilator shall be set full down at speeds below 45 KIAS.

    b. The stabilator shall be set at zero degrees at speeds above 45 KIAS.

    c. Autorotation airspeed shall be limited to 120 KIAS at all gross weights.
  16. MANOEUVRING LIMITATIONS - Prohibited
    • Prohibited Manoeuvres
    • Hovering turns greater than 30° per second are prohibited.
    • Aerobatic manoeuvres (eg. rolls, loops and inverted flight) are prohibited.
    • Flight beyond 90° bank angle is prohibited.
    • Simultaneous moving of both PCLs to IDLE or OFF (throttle chop) in flight is prohibited for other than emergency procedures.
    • Practice touchdown autorotations are prohibited.
    • Manouevring flight that results in heavy stall is prohibited.
  17. MANOEUVRING LIMITATIONS - Avoid
    • Rapid turns using more than 60 degrees angle of bank.
    • Any manoeuvring resulting in the onset of significantly increased 4:1
    • vibrations.
    • Any manoeuvre likely to result in droop stop pounding.
    • Abrupt manoeuvring and large control reversals.
    • Practice autorotations except as required for pilot training, test flights
    • and pilot categorisation events.
  18. Limitations for Manoeuvring with Sling/Rescue Hoist Load
    • Manoeuvring is limited to a maximum of 30° angle of bank in forward
    • flight.
    • Sideward flight is limited by bank angle and is decreased as airspeed
    • increases.
    • Rearward flight is limited to 35 knots.
  19. Bank Angle Limitation
    • Bank angles shall be limited to 30° when a PRI SERVO PRESS
    • caution light is illuminated.
  20. Touchdown Speed Limitations
    Maximum forward touchdown speed is limited to 60 knots ground speed on level terrain.
  21. Slope Landing Limitations
    • The following slope landing limitations apply regardless of gross weight, C of G and configuration:
    • a. 15 degrees nose-up, right wheel or left wheel upslope. The slope limitations shall be reduced by 4 degrees for every 10 knots of downslope wind.

    b. 6 degrees nose downslope. Landing in downslope condition with downslope winds greater than 15 knots shall not be conducted. A low frequency oscillation may occur when landing nosedown on a slope with the cyclic near the aft stop.
  22. WEIGHT LIMITATIONS
    • Gross Weight Limitations
    • Maximum gross weight ................................................... 22 000 lb.
    • ESSS configured helicopters (ferry mission only) ............ 24 500 lb.
    • Cargo Hook Limitation
    • Maximum weight on cargo hook ..................................... 8 000 lb.
    • Rescue Hoist Weight Limitation
    • Maximum weight on rescue hoist .................................... 600 lb.

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