Limitations SOPM - SYSTEM LIMITATIONS Flashcards
BATTERY LIMITATIONS - Min Voltage
22.5 V
ENGINES - POWERPLANT - Max start ITT
815°C
STARTER CRANKING LIMITS - Engine Start (Ground)
Start 1-2 90sec on, 10sec off
Start 3 - 5 90sec on, 5min off
NOTE - For ground starts, the maximum cumulative starter run time per start attempt is 90
seconds (motoring plus start time).
STARTER CRANKING LIMITS - Engine Start (Air)
1 & 2 120sec on, 10sec off
3 - 5 120sec on, 5min off
NOTE - For in-flight starts, the maximum cumulative starter run time per start attempt is 120
seconds (motoring plus start time).
DRY MOTORING CYCLE LIMITS
1 90sec on, 5min off
2-5 30sec on, 5min off
NOTE - After five sequential motoring cycles, the process may be repeated following a 15
minute cool down period.
ENGINE THRUST - Takeoff with the Automatic Takeoff Thrust Control System (ATTCS) OFF is
not authorized.
FUEL - Max. Fuel Capacity
20,935 lb
Fuel - Max. Imbalance
794 lb
Fuel - Min. Fuel Tank Temp.
-37°C
NOTE: It is permissible to takeoff and land with a FUEL IMBALANCE message as long as the
actual imbalance does not exceed 794 lb.
Fuel cross-feed must be
Off during Take off and Landing
HYDRAULIC PRESSURE AND TEMPERATURE - Min. Reservoir Temp. for ENG Start
-18°C
Brake temperature indication must be in the Range for takeoff
Green
APU LIMITS - Wait seconds after the EICAS is energized to start the APU.
30
Do not leave the aircraft unattended more than minutes with the APU running (SW).
five
APU STARTER DUTY CYCLE
Start Attempt 1 & 2 - 60 Seconds OFF
Third Attempt - 5 Minutes OFF
APU OPERATIONAL LIMITS - Temperature Min/Max
-54°C, ISA +35
APU OPERATIONAL LIMITS - Altitude
30,000 ft
APU OPERATIONAL LIMITS - CONTINUOUS OPERATION
CONTINUOUS OPERATION MIN MAX
Temperature -54°C ISA +35 (52°C)
Altitude — 33,000 ft
Electrical Generator Use —– 33,000 ft
Engine Start —– 21,000 ft
Bleed Use —– 15,000 ft
MAX Differential Pressure
8.4 psi
MAX Differential Overpressure
8.8 psi
MAX Differential Negative Pressure
-0.5 psi
MAX Differential Pressure for T/O and Landing
0.2 psi
After selecting reverse thrust, do not move the thrust levers into the forward thrust range until the
REV icon on the EICAS is shown in…………
amber or green.
AUTO FLIGHT CONTROL SYSTEM - Autopilot - Min. Engagement Height
(takeoff/initial climb and go-around/missed approach)
400ft
AUTO FLIGHT CONTROL SYSTEM - Autopilot - Min height for use on app
50ft HAT
APU brand?
SUNDSTRAND APS 2300
APU EGT Max start?
1032°C
APU EGT Max continuous?
717°C
APU Max rotor speed
108%
Is there an auto shutdown in flight if APU exceeds limits?
In flight, there is no automatic shutdown if EGT exceeds the limits.
Is there a time limitation for time/temp APU operating on the GND or Air?
There is no time limitation for operating the APU on ground or in flight in the amber range between 662°C and 717°C.
TAS, TAT, and SAT information are only valid above
60kts
While transmitting in VHF1, the standby magnetic compass indication is
not valid.
Barometric altimeter minimums must be used for all
CAT1 approaches
