UH-60 Ch. 5 EPs Change 9 Flashcards
Memorization of EPs
Maximum wind
velocity for rotor start or stop from any direction.
45 knots
MAIN TRANSMISSION MODULE LIMITATIONS
Oil pressure should remain steady and should be in the__ to__ psi range for the UH-60A, and__ to__ psi range for the UH-60L, to ensure that when fluctuations occur, they remain in the acceptable range. If oil pressure is not steady during steady state forward flight or in a level hover or if oil pressure is steady but under __ psi, make an entry on DA Form 2408-13-1. Sudden pressure drops (more than. ___ psi) without fluctuations require an entry on DA Form 2408-13-1.
MAIN TRANSMISSION MODULE LIMITATIONS
Oil pressure should remain steady and should be in the 45 to 55 psi range for the UH60A, and 45 to 60 psi range for the UH-60L, to ensure that when fluctuations occur, they remain in the acceptable range. If oil pressure is not steady during steady state forward flight or in a level hover or if oil pressure is steady but under 45 psi, make an entry on DA Form 2408-13-1. Sudden pressure drops (more than. 10 psi) without fluctuations require an entry on DA Form 2408-13-1.
Engine % RPM 1-2 (Np) \_\_ Sec. Transient\_\_\_\_\_\_\_\_\_\_ Transient\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Continuous\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Transient\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Avoid Operations in the \_\_ - \_\_ and \_\_ - \_\_ range except during start and shutdown.
Engine % RPM 1-2 (Np) 12 Sec. Transient: 105% - 107% Transient: 101% - 105% Continuous: 95% - 101% Transient: 91% - 95% Avoid Operations in the 20% - 40% and 60 - 90% range except during start and shutdown.
Engine Ng
__ Sec. Transient_________
__ Min Limit_____________
Continuous_____________
Engine Ng
12 Sec. Transient: 102% - 105%
30 Min Limit: 99% - 102%
Continuous: 05 - 99%
Engine Oil Temperature (A+/L)
__ Min Limit____________
Continuous____________
Engine Oil Temperature (A+/L)
30 Min Limit: 135°C − 150°C
Continuous: -50°C - 135°C
Turbine Gas Temperature \_\_ Sec. Transient\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ \_\_ Min. Limit (Contingency Power)\_\_\_\_\_\_\_\_\_\_ Start Abort Limit \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ \_\_ Min Limit \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ \_\_ Min Limit \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Normal \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
Turbine Gas Temperature 12 Sec Transient: 903°C - 949°C 2.5 Min Limit (Contingency Power): 878°C - 903°C Start Abort Limit: 851°C 10-Min Limit: 851°C - 878°C 30-Min Limit: 810°C - 851°C Normal: 0 - 810°C
Transmission Oil Temp (A+)
Precautionary__________
Continuous____________
Transmission Oil Temp (A+)
Precautionary: 105°C - 120°C
Continuous: -50°C - 105°C
Transmission Oil Temp (L)
Precautionary__________
Continuous____________
Transmission Oil Temp (L)
Precautionary: 105°C - 140°C
Continuous: -50°C - 105°C
Transmission Oil Pressure (A+/L)
Precautionary__________
Continuous____________
Idle and Transient_______
Transmission Oil Pressure (A+/L)
Precautionary: 60 - 130 PSI
Continuous: 30 - 60 PSI
Idle and Transient: 20 - 30 PSI
Main Rotor % RPM R Power On Transient\_\_\_\_\_\_\_\_\_\_\_\_\_ Continuous\_\_\_\_\_\_\_\_\_\_\_ Transient\_\_\_\_\_\_\_\_\_\_\_\_\_
Power Off (Autorotation)
Maximum_____________
Transient_____________
Normal_______________
Main Rotor % RPM R Power On Transient: 101% - 107% Continuous: 95% - 101% Transient: 91% - 95%
Power Off (Autorotation)
Maximum: 110%
Transient: 105% - 110%
Normal: 90% - 105%
Fuel Quantity
Normal_____________
Precautionary________
Fuel Quantity
Normal: 200 - 1500 lbs
Precautionary: 0 - 200 lbs
Engine Oil Pressure (A+/L) \_\_ Min. Limit\_\_\_\_\_\_\_\_\_\_\_\_ Normal Operation\_\_\_\_\_\_\_\_ Idle\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ *\_\_\_ PSI minimum @ 90% Ng and above
Engine Oil Pressure (A+/L) 5 Min. Limit: 100 - 120 PSI Normal Operation: 26 - 100 PSI Idle: 22 - 26 PSI *35 PSI minimum @ 90% Ng and above
Engine % Torque (A+) \_\_ - Sec Transient Dual- Engine\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Single- Engine\_\_\_\_\_\_\_\_\_\_\_\_\_ Continuous Single-Engine Only\_\_\_\_\_\_\_\_\_\_ Dual-Engine\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
Engine % Torque (A+) 10 - Sec Transient Single- Engine: 110% - 135% Dual- Engine: 100% - 125% Continuous Single-Engine Only: 0 - 110% Dual-Engine: 0 - 100%
Engine % Torque (L) \_\_-Sec Transient Dual-Engine Above \_\_ KIAS\_\_\_\_\_\_\_\_\_\_\_\_\_ \_\_\_ KIAS and below\_\_\_\_\_\_\_\_\_ Single-Engine\_\_\_\_\_\_\_\_\_\_\_\_\_\_
Continuous Dual-Engine Above \_\_ KIAS\_\_\_\_\_\_\_\_\_\_\_\_\_ \_\_ KIAS and below\_\_\_\_\_\_\_\_\_\_ Single-Engine\_\_\_\_\_\_\_\_\_\_\_\_\_\_
Engine % Torque (L) 10-Sec Transient Dual-Engine Above 80 KIAS: 100% - 144% 80 KIAS and below: 120% - 144% Single-Engine: 135% - 144%
Continuous Dual-Engine Above 80 KIAS: 0 - 100% 80 KIAS and below: 0 - 120% Single-Engine: 0 - 135%
Engine Starter Limits
At ambient temperatures of __°C and below,
__ consecutive start cycles may be made, followed by a __-minute rest period, followed by two additional consecutive start cycles. A __-minute rest period is then required before any additional starts. At ambient temperatures above __ up to __°C, __ consecutive start cycles may be made. A __-minute rest period is then required before any additional start cycles.
At ambient temperatures of 15°C and below, two consecutive start cycles 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 ambient temperatures above 15° up to 52°C, two consecutive start cycles may be made. A 30-minute rest period is then required before any additional start cycles.
Pneumatic Source Inlet Limits
The minimum ground-air source (pneumatic) required
to start the helicopter engines is __ psig and __ ppm at
___°C. The maximum ground-air source to be applied
to the helicopter is __ psig at ___°C
Pneumatic Source Inlet Limits
The minimum ground-air source (pneumatic) required
to start the helicopter engines is 40 psig and 30 ppm at
149°C (300°F). The maximum ground-air source to be appliedto the helicopter is 50 psig at 249°C
ENGINE OVERSPEED CHECK LIMITATIONS.
Engine overspeed check in flight is _________. Engine
overspeed checks, on the ground, are authorized ___________________________ only.
ENGINE OVERSPEED CHECK LIMITATIONS.
Engine overspeed check in flight is prohibited. Engine
overspeed checks, on the ground, are authorized by
designated maintenance personnel only.
ENGINE START LIMITS
Crossbleed starts shall not be attempted unless the ______________ or ________________ advisory does not appear, and operating engine must be at __% Ng SPEED or above and rotor speed at ___% RPM R.
ENGINE START LIMITS
Crossbleed starts shall not be attempted unless the #1
ENG ANTI-ICE ON or #2 ENG ANTI-ICE ON advisory does not appear, and operating engine must be at 90% Ng SPEED or above and rotor speed at 100% RPM R.
STOWAGE PROVISIONS.
Maximum capacity for each storage compartment is
___ pounds.
STOWAGE PROVISIONS.
Maximum capacity for each storage compartment is
125 pounds.
CARGO HOOK WEIGHT LIMITATION
UH-60A cargo hook: _____ lbs
UH-60L cargo hook: _____ lbs
CARGO HOOK WEIGHT LIMITATION
UH-60A cargo hook: 8,000 lbs
UH-60L cargo hook: 9,000 lbs
WEIGHT LIMITATIONS
Maximum weight is further limited by cargo floor
maximum capacity of ___ pounds per square foot.
WEIGHT LIMITATIONS
Maximum weight is further limited by cargo floor
maximum capacity of 300 pounds per square foot.
WEIGHT LIMITATIONS
Ground operations with seven-lug wheels are limited
to gross weights less than ______ pounds.
WEIGHT LIMITATIONS
Ground operations with seven-lug wheels are limited
to gross weights less than 20,500 pounds.