Systems Limitations Flashcards
Max engine temp during start
815C
Min battery voltage
22.5 V
Min oil temp for engine start
-40C
Min oil pressure for engine start
25 psi
Starter cranking limits on the ground
1&2 - 90 sec on, 10 sec off
3-5 - 90 sec on, 5 min off
Starter cranking limits in flight
1&2 - 120 sec on, 10 sec off
3-5 - 120 sec on, 5 min off
On the ground, what is the max cumulative starter run time per start attempt
90 sec
In flight, what is the max cumulative starter run time per start attempt
120 sec
Dry motoring cycle limits
1 - 90 sec on, 5 min off
2-5 - 30 sec on, 5 min off
When starting engine with tail wind, when must start be manually aborted
If no positive increase of N1 prior to starter cutout (50% N2)
When does starter cut out
50% N2
Can you takeoff with Automatic Takeoff Thrust Control System (ATTCS) OFF
No
How long must you wait after EICAS is energized prior to starting APU
30 sec
How long can you leave the aircraft unattended with APU running
5 min (sw)
Can you use APU and High Pressure air cart at the same time
Nope
Min hydraulic reservoir temp for engine start
-18C
What must brake temp indication be for takeoff
In green range
After selecting reverse thrust, when can you move thrust levers into forward thrust range
When REV icon on EICAS is shown in amber or green
Min engagement height for autopilot
400 ft
Min use height for autopilot
50 ft
Min use height for autopilot on non-precision approach
MDA
At what speed do TAS, TAT, and SAT info become valid
Above 60kts
When is standby mag compass indication not valid
When transmitting on VHF 1
Which minimums must be used for all CAT I approaches
Barometric altimeter minimums
Can you use IESS on back course approaches
No
When should you manually inhibit predictive EGPWS functions
When landing at an airport not in database
And
During QFE ops if GPS data is unavailable or inoperative
Can we do RNP approaches
No (sw)
When can we not use FMS speed mode
During engine failure
During power up, what must be done if one or both batteries are between 21-22.5 V
Recharge the batteries prior to takeoff through any AC source including engines during taxi.
What must you do if, during startup, one or both batteries are below 21V
Report irregularity and do not depart
To allow the flight controls built in test to complete, how long must you wait before turning on any hydraulic pump
3 mins
For APU to start, how must the batteries be set
BATT 1 must be ON
BATT 2 must be AUTO
While doing a Flex thrust takeoff, when will REF ATTCS automatically give you maximum available thrust
- Difference between both engine N1 values is greater than 15%
- OEI (one engine inoperative)
- Associated thrust lever is moved to MAX detent
- Windshear is detected
When is use of Flex Thrust Takeoff prohibited
- Takeoff on Contaminated runways
- Reported or forecast windshear
- when a special departure procedure specifies full thrust for takeoff
If armed on the ground, when will LNAV automatically engage
200 ft AGL
With all engines operating, what guidance will the flight director have you maintain
V2 + 10 to 15 kts
What is the flight director’s guidance range during engine failure in flight
Based on weight and flap setting.
Min 8 degrees, max 18 degrees
With one engine inop, limit bank angles to:
15 degrees at V2
20 degrees at V2+5
25 degrees at V2+10
