Limitations SOPM - SYSTEM LIMITATIONS

Question 1

BATTERY LIMITATIONS - Min Voltage

Answer 1

22.5 V

Question 2

ENGINES - POWERPLANT - Max start ITT

Answer 2

815°C

Question 3

STARTER CRANKING LIMITS - Engine Start (Ground)

Answer 3

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).

Question 4

STARTER CRANKING LIMITS - Engine Start (Air)

Answer 4

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).

Question 5

DRY MOTORING CYCLE LIMITS

Answer 5

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.

Question 6

ENGINE THRUST - Takeoff with the Automatic Takeoff Thrust Control System (ATTCS) OFF is

Answer 6

not authorized.

Question 7

FUEL - Max. Fuel Capacity

Answer 7

20,935 lb

Question 8

Fuel - Max. Imbalance

Answer 8

794 lb

Question 9

Fuel - Min. Fuel Tank Temp.

Answer 9

-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.

Question 10

Fuel cross-feed must be

Answer 10

Off during Take off and Landing

Question 11

HYDRAULIC PRESSURE AND TEMPERATURE - Min. Reservoir Temp. for ENG Start

Answer 11

-18°C

Question 12

Brake temperature indication must be in the Range for takeoff

Answer 12

Green

Question 13

APU LIMITS - Wait seconds after the EICAS is energized to start the APU.

Answer 13

30

Question 14

Do not leave the aircraft unattended more than minutes with the APU running (SW).

Answer 14

five

Question 15

APU STARTER DUTY CYCLE

Answer 15

Start Attempt 1 & 2 - 60 Seconds OFF
Third Attempt - 5 Minutes OFF

Question 16

APU OPERATIONAL LIMITS - Temperature Min/Max

Answer 16

-54°C, ISA +35

Question 17

APU OPERATIONAL LIMITS - Altitude

Answer 17

30,000 ft

Question 18

APU OPERATIONAL LIMITS - CONTINUOUS OPERATION

Answer 18

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

Question 19

MAX Differential Pressure

Answer 19

8.4 psi

Question 20

MAX Differential Overpressure

Answer 20

8.8 psi

Question 21

MAX Differential Negative Pressure

Answer 21

-0.5 psi

Question 22

MAX Differential Pressure for T/O and Landing

Answer 22

0.2 psi

Question 23

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…………

Answer 23

amber or green.

Question 24

AUTO FLIGHT CONTROL SYSTEM - Autopilot - Min. Engagement Height
(takeoff/initial climb and go-around/missed approach)

Answer 24

400ft

Question 25

AUTO FLIGHT CONTROL SYSTEM - Autopilot - Min height for use on app

Answer 25

50ft HAT

Question 26

APU brand?

Answer 26

SUNDSTRAND APS 2300

Question 27

APU EGT Max start?

Answer 27

1032°C

Question 28

APU EGT Max continuous?

Answer 28

717°C

Question 29

APU Max rotor speed

Answer 29

108%

Question 30

Is there an auto shutdown in flight if APU exceeds limits?

Answer 30

In flight, there is no automatic shutdown if EGT exceeds the limits.

Question 31

Is there a time limitation for time/temp APU operating on the GND or Air?

Answer 31

There is no time limitation for operating the APU on ground or in flight in the amber range between 662°C and 717°C.

Question 32

TAS, TAT, and SAT information are only valid above

Answer 32

60kts

Question 33

While transmitting in VHF1, the standby magnetic compass indication is

Answer 33

not valid.

Question 34

Barometric altimeter minimums must be used for all

Answer 34

CAT1 approaches