Limitations Flashcards
*CRJ-550 Structural Weight Limitations.
Maximum Taxi and Ramp Weight - 66 000 lb.
Maximum Take-Off Weight - 65 000 lb.
Maximum Landing Weight - 61 000 lb.
Maximum Zero Fuel Weight - 59 000 lb.
*CRJ- 700 Structural Weight Limitations
Maximum Taxi and Ramp Weight - 75 250 lb.
Maximum Take-Off Weight - 75 000 lb.
Maximum Landing Weight - 67 000 lb.
Maximum Zero Fuel Weight - 62 300 lb.
Maximum airport pressure altitude for take-off and landing.
8 000 ft.
Maximum operating altitude.
41 000 ft.
Maximum ambient temperature for take-off and landing.
ISA+35°C
Minimum ambient temperature for take-off.
-40°C (-40°F).
*When must the Cowl Anti-Ice System be on on the ground?
When the outside air temperature is 10°C (50°F) or below and;
1 - Visible moisture in any form is present (fog with visibility less than 1 mile/1500 m, rain, snow, sleet and ice crystals).
2 - Operating on runways, ramps or taxiways where surface snow, ice, standing water or slush is present.
*When must the Cowl Anti-Ice system be on in flight?
When encountering icing conditions or ICE is annunciated by the ice detection system.
*What defines icing conditions in flight?
SAT is above -40°C (-40°F) and TAT is 10°C (50°F) or below and visible moisture is present in any form (cloud, rain, snow, ice crystals).
*When must the Wing Anti-Ice System be on on the ground?
Must be on for take-off when the outside air temperature is 5°C (41°F) or below and visible moisture is present or the runway is contaminated with surface snow, slush or standing water.
When type 2 and 4 anti-icing fluids have been applied, the system must only be selected on just prior to thrust increase for take-off.
*When must the Wing Anti-Ice System be on in flight?
When icing conditions exist and the airspeed is below 230 KIAS or ICE is annunciated on the ice detection system.
*What limitations apply to holding in icing conditions?
Flaps and slats must not be extended.
*What limitations apply to flight in areas of large supercooled water droplets?
Indicated by ice accretion on the flight deck side windows.
Continued operation is prohibited.
If encountering these conditions the Wing and Cowl Anti-Ice Systems must be on and the pilot should escape these conditions.
*How is a pilot able to determine if large supercooled water droplets are present?
Ice accretion on the flight deck side windows.
*What are the CRJ-550 surface critical areas?
Wings, upper fuselage, horizontal stabiliser, vertical stabiliser, control surfaces and engine inlets.
*When is take-off prohibited?
When frost, ice, snow or slush adheres to any critical surface areas.
Can take-off be made if any frost adheres to the aircraft surface?
Yes, under the following conditions.
1 - It may be present on the upper fuselage if surface features are able to be distinguished.
2 - 1/8 of an inch may adhere to the underside of the wing caused by cold soaked fuel.
What is the maximum runway slope allowed for take-off and landing?
A maximum of 2% uphill or downhill.
*What is the maximum tailwind component for take-off and landing?
10 kt.
Can the flight deck door be opened in flight? What are the procedures?
Generally no. However the door may be opened to allow a pilot to enter and leave the flight deck if flight crew physiological needs dictate.
A flight attendant must occupy the control seat if a pilot leaves the flight deck and the remaining pilot must wear the oxygen mask if above FL250.
A challenge and response closing and locking verification must be used to ensure the flight deck door is locked.
What is the maximum weight allowable in the cargo compartments of the CRJ-550?
FWD - 1000 lb.
AFT - 3740 lb and 2710 lb.
What engines power the CRJ-550/700?
Two General Electric high bypass turbofan engines.
CF34-8C5B1.
Describe the engine warm-up limitations.
The engine must remain at idle until oil pressure reaches the normal operating range.
Do not exceed 75% N1 for two minutes after starts or until all engine indications are in the normal range, whichever is longer.
*When can the crew use the engines HIGH PWR SCHEDULE switchlight?
Never.
*What is the maximum ITT before attempting a ground start?
120°C.
*What is the maximum oil pressure limitation after a ground start?
182 psi, but it cannot be greater than 95 psi for a maximum of ten minutes.
*What limitations apply to normal take-off power and maximum power (2 engines)?
5 minutes.
*What limitations apply to APR on one engine?
10 minutes.
*Under what circumstances must continuous engine ignition be used?
Take-off and landing on contaminated runways.
Flight through moderate or heavy intensity rain.
Flight through moderate or heavy intensity turbulence.
Flight in the vicinity of thunderstorms.
*When is the use of Reduced/FLEX thrust for take-off not authorised?
Wing and/or cowl anti-ice bleeds are in use.
Runway is contaminated with standing water, slush, snow or ice (unless its a wet runway and the pilot selects ‘WET’ runway performance data on the FMS)
Warnings or forecasts of windshear or down drafts exist.
The anti-skid system is inoperative.
The engine cannot achieve full rated thrust (as noted by maintenance).
*What are the engine starter cranking limits for a ground start?
Starts 1 and 2 - 90 second on followed by a 10 second cool down.
Starts 3 through 5 - 90 seconds on followed by a 5 minute cool down.
*What are the engine starter cranking limits for an air start?
Start 1 - 120 seconds on followed by a 10 second cool down.
Starts 2 through 5 - 60 seconds on followed by a 5 minute cool down.
*What are the engine starter cranking limits for dry motoring on the ground?
Start 1 - 90 seconds on followed by a 5 minute cool down.
Starts 2 through 5 - 30 seconds on followed by a 5 minute cool down.
*What is the maximum fuel imbalance between the left and right tanks?
300 lb for take-off, otherwise 800 lb.
What is the maximum fuel load for the CRJ-550?
Total
19 594 lb (pressure fuelled) or
14 580 lb (gravity fuelled).
Left wing - 7492 lb (7290 lb if gravity fuelled).
Right wing - 7492 lb (7290 lb if gravity fuelled).
Centre - 4610 lb.
*What limitations apply to the centre fuel tank?
Take-off with a fuel load in excess of 500 lb in the centre tank is not permitted unless there is 4400 lb of fuel in each wing tank.
What is the minimum amount of fuel required for a go-around?
600 lb in each wing tank, assuming not more than 10° pitch up.
What limitations apply to fuel cross flow?
It must be OFF for take-off.
*What limitations apply to the APU starter motor cycle?
Not more than 3 starts or start attempts within 1 hour.
Additionally, a 2 minute period is required between APU start attempts to allow for cooling and fuel drainage.
What is the ambient minimum temperature for starting a cold-soaked APU in the ground?
-40°C (-40°F).
What is the maximum permissible load on the APU generator?
40 kVA.
*What is the maximum cruise MACH of the CRJ-700 during flight in RVSM?
0.83 MACH.
*What are the flap extension speeds of the CRJ-550?
Flaps 1 - 230 kt. Flaps 8 - 230 kt. Flaps 20 - 230 kt. Flaps 30 - 185 kt. Flaps 45 - 170 kt.
*What are the maximum landing gear operating speeds?
Extension - 220 kt.
Down and locked - 220 kt.
Retraction - 200 kt.
What is the maximum tyre speed of the CRJ-550/700?
182 kt.
*What is the turbulence penetration speed?
280 kt or 0.75 MACH, whichever is lesser.
What are the windshield wiper operating limitations?
Must not be operated above 250 kt.
If the wiper has failed in a non-parked position speed is limited to 250 kt.
What is the maximum cabin pressure differential in flight?
- 7 psi +ve.
0. 5 psi -ve.
What is the maximum cabin pressure differential during take-off, landing and taxi?
0.1 psi.
What limitation applies to the use of the EMERG DEPRESS switch?
It cannot be used above 15 000 ft.
What is the maximum altitude for single pack operation in the CRJ-550/700?
31 000 ft.
*What minimum altitudes is the use of autopilot prohibited?
Below 600 ft on take-off.
Below 400 ft on a non-precision approach.
ILS GS 3.5 degrees or less - Below 80 ft.
ILS GS greater than 3.5 and 4.0 degrees - Below 120 ft if 4000 ft or below.
ILS GS greater than 4.0 degrees - Prohibited.
What limitation applies to the use of autopilot in RVSM airspace?
The ADC source coupled to the active autopilot must be the same as that coupled to the ATC transponder.
What is the maximum continuous load on each TRU in flight?
120 amps.
*To protect the CRT displays, what is the maximum time for ground operations with DC power?
5 minutes.
*When is the use of flaps/slats prohibited?
Enroute and anytime above 15 000 ft.
*When is the use of the flight spoilers prohibited?
Below 300 ft AGL or, to ensure adequate maneuvre margins, at airspeeds below the recommended approach speeds plus 10 kt.
When is the use of thrust reversers prohibited?
In flight.
When is a go around prohibited?
After use of the thrust reversers on landing.
If a thrust reverser icon is EICAS warning or caution message is displayed;
Take-off is prohibited.
What limitations apply to the use of thrust reversers on landing?
Maximum reverse thrust is prohibited below 75 kt and reverse idle should be achieved by 60 kt.
*When must the taxi lights be switched off?
If the aircraft has been stationary in excess of 10 minutes.
What navigation limitations apply to alternate airport selection?
The airport must be served by an approach other than a GPS approach, the aircraft must be suitably equipped and that aid must be operational.
On take-off, what is the target thrust setting tolerance?
1% N1.
*What is the maximum allowable ITT during engine start?
815ºC.
What is the maximum allowable ITT before attempting an engine start?
120ºC on the ground.
90ºC in the air.
After start, what limitations apply to the oil pressure indication?
Should be positive when starting.
May peak beyond 182 psi (amber dashes).
Must fall below 95 psi after 10 minutes.
What is a cold soaked airplane and what limitations apply?
Before the first flight of the day, be -30ºC or below for more than 8 hours.
Motor the engine for 60 seconds and verify fan rotation before start.
Thrust reversers must be actuated until the deploy and stow cycles are 2 seconds or less.
When must the starter motor not be used?
When N2 RPM exceeds 45%.
If ITT is below 120ºC (ground) or 90ºC (air) thrust lever movement to start is permitted.
What are the windmilling relight start limitations?
Must be below 25 000 ft.
Speed 250 kt to VMO.
Minimum 7.2% N2.
What are the starter assisted relight procedure limitations?
Must be 21 000 ft or below.
Speed VREF up to VMO.
0% - 45% N2.
What are the all engine out rapid relight limitations?
10 000 ft or below.
Demonstrated to 200 kt.
What is the minimum fuel required in the tanks for a go-around?
600 lb per wing tank.
What is the maximum fuel imbalance permitted on the ground?
2500 lb.
What is the maximum APU RPM?
106%.
What is the maximum APU EGT?
1038ºC.
What is the maximum load permissible on the APU generator?
40 kVa.
What is the maximum altitude for APU bleed air extraction?
25 000 ft.
What defines icing conditions in flight?
SAT above -40 C, TAT of 10 C or below and visible moisture is present in any form.
What limitations does carrying cargo in the cargo conpartment impose?
The flight must be within 60 minutes of a suitable airport at all times (fire extinguising feature).
