System Limits Flashcards
Nr Limits
Np Limits
Engine Torque Limits
MRGB Torque Limits
0-100 Cont
100.1-110.9 Transient (10 sec)
111 Max
MGT Temperature
Ng
Engine Oil Temp
Engine Oil Px
MRGB Oil Temp
MRGB Oil Px
CBOX Oil Temp
CBOX Oil Px
IGB Oil Temp
IGB Oil Px
TRGB Oil Temp
TRGB Oil Px
Hydraulics Temp
Hydraulics Pressure
Hydraulics Fliud LvL
Main Generator Voltage Limits
Main Generator Amps
Battery Limits
APU Generator Voltage
APU Generator Amps
Ess and Non-ESS DC Bus Limits
ESS and Non-ESS AC bus Limits
Hot Start
MGT 867ºC
Engine Starter Limits
About Start Criteria
HDMI OR 14
Hot Start: MGT reachess 867ºC during start
Starter fails to Disengage above 55+- 3% Ng
No MGT indication within 30 seconds after the starter engages
No Np within 30 seconds after Ng reaches Idle 67+-3%
Oil pressure is not evident within 30 seconds after starter is engaged. Do not motor engine if aborting due to lack of oil pressure.
Rotor brake light fails to extinguish within 30 seconds after brake release.
Ng fails to reach 14% within 6 seconds
Rotor Brake Limits
- Do not apply abouve 60%Nr
- Do not apply below 25 percent Nr
- Release rotor brake prior to 0% Nr to avoid sudden stoppage
- During rotor brake start, release bake within 25 secpmds after engine idle RPM (67+-3%Ng) is attained
- During Rotor Brake start, ROTOR BRAKE light should extinguish within 30 seconds after brake release.
- Do not exceed engine Idle RPM with rotor brake engaged.
Prohibited Maneuvers
PAPA DDS
- Practice autorotations to a touchdown
Aerobatic maneuvers as defined by CNAF
Practice autorotation entries within the shaded regions of the HV diagram
Abrupt or high magnitude, simultaneous collective and cyclic inputs during flight or on deck
Do not exceed 50 percent MRGB torque at airspeeds above Vh while in a dive
Dual-Engine throttle chops above 120 KIAS
Single-Engine throttle chops above 60 percent MRGB Torque
Engine Out Warning Light
60%Ng
