Limitations Flashcards
Electrical power engine generator limitations
Ground and flight operations- 100% maximum continuous
APU starter/generator limitations
Ground and flight operations- 100% maximum continuous
Battery limitations
Maximum indicated battery charge current for takeoff:
APU gen available-20A
APU gen Unavailable-8A
Max ZFW
28,200 lbs
Total usable fuel volume (pressure refueling)
14,620 lbs
Total usable fuel volume (overwing refueling?)
9760 lbs. - gravity refueling only fills the wing and feed tanks and can take a significantly longer time
Primary fuel types
Jet A
Jet A-1
JP 8
JP 5
See AFM for additional authorized types
Fuel tank temps
Jet A : -38C to 57C
Jet A-1 and JP 8: -46C to 57C
Ground refueling carrier max pressure should not exceed:
50 psi to avoid damage
Max ITT during start
N2 at or below 40%: 650C
N2 above 40%: 950C
Engine ground operations
N1 is limited to 50% if tailwind component is more than 15 knots
Max N1, N2 and ITT values
Max cont. TO APR Transient
N1. 96.5. 96.8. 96.8. 98.0
N2. 98.0. 98.0. 98.5. 99.9
ITT. 950. 955. 955. 970
Minimum fuel temp at the fuel filter
3C
Light-off
Abort engine start if light off does not occur within 30 seconds of start initiation
Thrust reversers
-be at reverse idle by 40 KIAS
- cannot be used for power back
Oil pressure during start
Abort start if no positive indication of oil pressure by 30%N2
Oil inlet temperature
-Before engine start: -40C minimum
-For continuous operation above ground idle: 5C minimum
-Operation above climb thrust: 15C minimum
-Steady state operation: 138C maximum
Transient operation not to exceed 2 minutes: 154C maximum
Max APU altitudes:
Start
Operation
Bleed air use
APU assisted engine starting
Start: 35000
Operation: 40000
Bleed air use: 20000
APU assisted engine starting: 15000
APU gen load limits
100% on ground and inflight
APU max rotor speed
All conditions 108%
APU max permissible EGT
-During start below 50%: 974C
-During start between 50%-90%: 974C decreasing linearly to 718C
-Running: 718C
Bleed air in use: 666C
Battery voltage required for APU start
22-27V
Do not operate APU if ______ fire extinguisher has been activated
Right (#2)
APU use
Not approved for unattended operations
Operate APU only if _____ standby fuel pump is operative or _____ engine is operative
Right; Right
When ground aircraft de-icing is in progress…..
APU must be off with door closed
Preferred hydraulic fluid
Skydrol LD IV
Left and right brake accumulator pre charge pressure
700 +- 30 psi @70F/21C
+- 25psi for each increment of 10F/5C
Emergency gear bottle pre charge pressure
2600psi to 3000 psi @70F/21C
+/- 25 psi for each increment of 10F/5C
Normal operation hydraulic pressure
2700-3250psi with 3500psi max
Max hydraulic temp
95C
Electric Motor Pump (EMP) operation above ______ ft is limited to ____ minutes
39000 ft
10 minutes
Max airspeed for flaps
10: 250 knots
20: 220 knots
Landing Flaps: 180 knots
Alternate stab trim: max speed with the alternate stab armed, autopilot engaged and a jammed elevator is
MMO: .77 Mach
Max altitude for Flaps Extended
20,000 ft
Max altitude for gear extended/operation
20000 ft
Emergency landing gear extension speeds
-don’t extend in excess of 175 knots
-after gear is down and locked, speed can be increased up to 195 knots
NWS oversteer CAS triggers at ___ degrees
Damage will occur at angles greater than ____
94 degrees
100 degrees
Brake overheat CAS displays at ___ F
450
In cold weather operation, ride the brakes during taxi to warm brakes to ______
Do not take off with temps below ___ on contaminated runways
10-90C
10C
The internal baggage door must be closed for
Taxi, takeoff and landing
Depending on mod status, access to the baggage compartment is limited to
40,000 ft or 44,000 ft. See AFM
Max approved pressure altitude for takeoff or landing
10,000 ft field elevation (issue 1)
14,000 ft field elevation (issue 2)
Operation of wing anti ice is required…
Wing anti ice must be on for takeoff…
If icing conditions are imminent, or immediately upon detection of ice formation on wings, winglets, or windshield edges.
If in icing conditions or if icing conditions are anticipated
Takeoff is prohibited
With frost, ice, snow, or slush adhering to the wings, horizontal and vertical stabilizer, control surfaces, engine inlets or other critical surfaces ( top of the fuselage as well should be clean )
Engine anti ice is required …
For taxi and takeoff when SAT is 10C or below, and inflight when TAT is 10C or below, and visible moisture in any form is present such as clouds, fog with visibility of one mile or less, rain, snow, sleet and ice crystals
Use of flaps in icing conditions is restricted to takeoff, approach and landing only. Holding in icing is limited to …
0 degrees flaps only
Probe heat operation in OVRD mode on ground for more than
30 seconds is prohibited
Minimum holding speed in icing …
185 KIAS
Hats and earmuff type headsets must be removed…
Prior to donning crew oxygen mask
Crew and passenger oxygen masks are not approved for use above …
Prolonged operation above _____ ft cabin altitude with passengers onboard is not recommended
40,000 ft cabin altitude.
25,000 ft
When servicing waste system use _____ only to rinse the tank. Do not allow any chemical mixture in the rinse water as it may harm the tank
Water
Preflight- MLG strut extension must be ___ minimum
1 inch
Preflight- to set the parking brake- operate the left EMP of both brakes accumulator pressures are below ____ psi
1300
