CRJ-550 Limitations

What are the runway slope limitations?

+2% (uphill) -2% (downhill)

What are the flaps retracted maneuvering limit load factors?

-1.0 to 2.5 G

What is the minimum ambient temperature for starting a cold soaked APU on the ground?

-40 C

What is the minimum ambient temperature for takeoff?

-40 C (-40 F)

What are the engine warm up requirements?

-Engine must remain at IDLE until oil pressure reaches normal operating range -During all starts, do not exceed 75% N1 for two minutes after start, or until all operating indications are in the normal range, whichever is longer.

When is continuous ignition required?

-Takeoffs and landings on contaminated runways -Flight through moderate or heavier intensity rain -Flight through moderate or heavier intensity turbulence -flight in the vicinity of thunderstorms

What must be done if the airplane has been cold soaked?

-The engines must be motored for 60 seconds and the fan rotation must be verified before an engine start is initiated -Thrust reversers must be actuated until the deploy and stow cycles are two seconds or less

When can reduced FLEX takeoff thrust not be used?

-Wing and/or cowl anti-ice is on -Runway is contaminated with standing water, slush, snow, or ice -Warnings or forecasts of windshear or downdrafts exist -Antiskid system is inoperative -The engine cannot achieve full rated thrust

When must the engine oil levels be checked?

-at least every 36 operating hours -in excess of 36 operating hours, must be checked after every engine shutdown -must wait for a minimum of 5 minutes after the engine shutdown before you check the oil level.

What must you do if engine oil needs to be replenished?

-wait for a minimum of 15 minutes after the engine shutdown before servicing the engine

What is the normal N2 operating range?

0 - 99.3%

What is the normal N1 operating range?

0 - 99.4%

What are the flaps extended maneuvering limit load factors?

0.0 to 2.0 G

During taxi, takeoff and landing, the pressure differential must not exceed what?

0.1 psi

What is the CRJ-550 max cruise Mach number in RVSM airspace?

0.83

What is the CRJ-550 Mmo?

0.85

Engine Starting Limits or Motoring (Flight)

1 120 seconds on 10 seconds cool down 2 - 5 60 seconds on 5 minutes cool down

Engine Motoring (Ground)

1 90 seconds on 5 minutes cool down 2 - 5 30 seconds on 5 minutes cool down

What is the minimum flight crew for operations?

1 Pilot and 1 Copilot

Engine Starting Limits (Ground)

1 and 2 90 seconds on 10 seconds cool down 3 - 5 90 seconds on 5 minutes cool down

APR power (one engine) is limited to how long?

10 minutes

What are the CRJ-550 LH FWD Top / Bottom stowage dimensions?

100 lbs / 133.5 lbs

What is the APU max EGT?

1038 C

What is the APU max RPM?

106%

What are the CRJ-550 FWD Cargo stowage dimensions?

109 cu ft 1,000 lbs

ITT must be below what temperature before attempting a start on the ground?

120 C

What is the maximum permissible continuous load on each TRU in flight?

120 amps

What are the CRJ-550 RH MID AFT Top / Bottom stowage dimensions?

125 lbs / 125 lbs

What are the CRJ-550 RH MID FWD Top / Bottom stowage dimensions?

125 lbs / 125 lbs

Flight with slats/flaps extended at altitudes above what is prohibited?

15,000'

What is the max APU ground starting altitude?

15,000'

Use of the EMERG DEPRESS switch above _______ is ___________.

15,000' Prohibited

Max oil pressure is limited to ______ when oil temperature transient is less than ________.

156 psi 60 C

What is the CRJ-550 tire speed limit?

182 kts ground speed

Oil pressure should show positive value during start and may peak beyond _______. Oil pressures above ______ are displayed as ____________. Oil pressure may be greater than ________ for a maximum of _________.

182 psi 182 psi / amber dashes 95 psi / 10 minutes

What is the maximum oil consumption for each engine?

189 cubic centiliters per hour

What is the max APU bleed air altitude?

25,000'

What is the max speed for windshield wiper operations?

250 KIAS

What are the turbulence penetration speeds?

280 KIAS / .75 Mach

What is the minimum altitude that flight spoilers may be extended inflight?

300' AGL

What is the CRJ-550 single pack operating altitude limit?

31,000'

What is the max altitude for APU starting?

37,000'

What are the CRJ-550 AFT Cargo stowage dimensions?

374 cu ft / 296 cu ft 3,740 lbs / 2,710 lbs

What is the max load on the main and APU generators?

40 KVA

What is the minimum altitude for autopilot use on a non-precision approach?

400' AGL

What is the max permissible load on the APU generator?

40KVA

What is the max altitude for APU operations?

41,000'

What is the maximum operating altitude?

41,000'

Take off is prohibited with fuel temperature below what?

5 C

Normal takeoff power and maximum power (two engines) is limited to how long?

5 minutes

What is the max permissible time for ground operations with DC power on the ground?

5 minutes

Takeoff with fuel in excess of _____ in the center tank is not permitted unless.......

500 lbs each main tank is above 4,400 lbs

The minimum fuel required for a go around is what?

600 lbs per side assuming a maximum of 10 degrees nose up attitude

What is the minimum altitude for autopilot use on takeoff?

600' AGL

During landings, max reverse thrust is prohibited below_______, and reverse idle should be achieved by _______.

75 KIAS 60 KIAS

What is the max PA for takeoff and landing?

8,000'

What is the max relief differential pressure and max negative differential pressures?

8.7 psi max relief -0.5 psi max negative

What are the CRJ-550 LH MID Top / Bottom stowage dimensions?

83.5 lbs / 167 lbs

ITT must be below what temperature before attempting a start in the air?

90 C

What are the CRJ-550 overhead stowage dimensions?

97.8 cu ft 1,180 lbs

What are the CRJ-550 underseat stowage dimensions?

99 cu ft 12 lbs per seat

What is the red N2 operating range?

99.4% and above

What is the red N1 operating range?

99.5% and above

What is the minimum altitude for autopilot use on precision approach?

<=3.5 degree glide - 80' AGL >3.5 degree glide <=4.0 degree glide and <=4,000' APT Elevation - 120'

What are the engine relight limits (All Engine Out Rapid Relight)

ALT from 10,000' to Sea Level FADEC rapid relight capability has been demonstrated at 200 KIAS for up to 15-second fuel interruptions

What are the engine relight limits (Starter Assisted)

ALT from 21,000' to Sea Level Speed from Vref up to Vmo and from 0 - 45% N2

What are the engine relight limits (Windmilling)

ALT from 25,000' to Sea Level Speed 250 KIAS to Vmo and 7.2% N2 minimum

What type of APU does the CRJ-550 have?

Allied Signal RE 220 (RJ)

Requirements for flight into Supercooled Large Droplet (SLD) Icing

Continued operation in SLD conditions is prohibited SLD conditions are indicated by ice accretion ont he flight deck side windows. -wing and cowl anti-icing systems must be ON in SLD conditions -Leave icing conditions when side window icing occurs

The airplane is certified in the transport category for what conditions?

Day / Night VFR / IFR Flight into Icing

What is the maximum permissible fuel imbalance between the left wing and right wing tanks?

During takeoff: 300 lbs All other phases of flight: 800 lbs

What are the landing gear operating speeds?

Extension: 220 Down and Locked: 220 Retraction: 200

What are the flap extend speeds?

Flaps 1 : 230 Flaps 8: 230 Flaps 20: 230 Flaps 30: 185 Flaps 45: 170

What is the flight requirement when carrying cargo?

Flight must be within 60 minutes of a suitable airport, if cargo is carried in any labeled cargo compartment.

What are the Oil Temp ranges (Green, Amber, Red)?

Green: -40 to 155 Amber: 156 to 163 Red: 164 and above

What are the Oil Pressure ranges (Green, Amber, Red)?

Green: Variable Amber: Variable Red: 0 to 24 psi

What is the maximum ambient air temperature approved for takeoff and landing?

ISA +35 Degrees C

What is the definition of icing condtions?

Icing conditions exist in-flight at a TAT of 10 C or below, and visible moisture in any form is encountered (such as clouds, rain, snow, sleet or ice crystals), except when the SAT is -40C or belo.

What are the powerplant intermix limitations?

Intermix operations are prohibited

What will the ISI display on a backcourse approach with NAV 1 tuned to a valid ILS frequency?

Localizer and glideslope deviations Use of ISI on a backcourse is prohibited

CRj-550 Structural Limitations

Max Taxi and Ramp Weight - 66,000 lbs Max Takeoff Weight - 65,000 lbs Max Landing Weight - 61,000 lbs Max Zero Fuel Weight - 59,000 lbs Minimum Flight Weight - 42,000 lbs

What are the APU starter limitations?

Max of 3 start attempts per hour with a mandatory 2 min cool down cycle between each attempt

What are the tailwind limitations for takeoff?

Maximum of 10kts

When must wing anti-ice be used on the ground?

Must be on for takeoff when OAT is 5 C or below and: -visible moisture in any form is present -the runway is contaminated with surface snow, slush or standing water When Type II or IV anti-icing fluids have been applied: -wing anti-ice system must only be selected on, if required, just prior to thrust increase for takeoff

When must wing anti-ice be used in flight?

Must be on when: -ICE is annunciated by the ice detection system, or -in icing conditions and the airspeed is less than 230 KIAS NOTE: Do not hold in icing conditions with slats/flaps extended.

When must cowl anti ice be used in flight?

Must be on when: -in icing conditions, or -ICE is annunciated by the ice detection system

Can you use the thrust reversers in flight?

No

Wind within 30 degrees on either direction of the airplane nose; no wind speed limit -OR- >30 degrees in either direction of the airplane nose; <5 knots wind

No limitation - TOGA thrust may be applied before brakes released, but must be set by 60 KIAS

Powered and gravity crossflow must be ________ for takeoff.

Off

The airplane must be completely depressurized prior to what?

Opening any doors

What are the ozone concentration limits?

Prohibited where ozone concentrations exceed the following: - .25ppm by volume, sea level equivalent, at any time above FL320, and - 0.1ppm by volume, sea level equivalent, time-weighted average during any three hour interval above FL270

What are the cold weather operation requirements?

Take off is prohibited with frost, ice, snow or slush adhering to any critical areas (wings, upper fuselage, horizontal stabilizer, vertical stabilizer, control surfaces, and engine inlets) Exceptions are: -takeoff is permitted if surface features on the upper surface of the fuselage are distinguishable -maximum 1/8" layer of frost on the underside of the wing caused by cold soaked fuel.

What type of engines does the CRJ-550 have?

Two General Electric CF34-8C5B1 engines

What is the limitation for the high-power schedule switchlight?

Use of the high-power switchlight is prohibited

What is the maximum airspeed for ADG operations?

Vmo / Mmo

When must cowl anti ice be used on the ground?

When OAT is 10 C or below: -and visible moisture in any form is present -when operating on runways, ramps or taxiways where surface snow, ice, standing water, or slush is present

Backing up with thrust reverse is what?

prohibited

Enroute use of slats/flaps is what?

prohibited

Takeoff with a thrust reverser EICAS message displayed is what?

prohibited

Towbarless towing is what?

prohibited

Flight spoilers must not be extended in flight at airspeeds below what?

the recommended approach speed plus 10 KIAS

When must the taxi lights be turned off?

whenever the airplane is stationary in excess of 10 minutes

>30 degrees in either direction of the airplane nose; >30 knots windspeed

Apply maximum of idle/taxi thrust before brakes released, then set TOGA thrust by 60 KIAS

>30 degrees in either direction of the airplane nose; between 5 - 30 knots windspeed

Apply up to a maximum of 75% N1 before brakes released, then set TOGA thrust by 60 KIAS.

What is the required equipment for RVSM operations?

Autopilot (1) Altitude Alerting System (1) Altitude Reporting Transponder (1 of 2) Air Data Computer (2 of 2)

What is the definition of an airplane cold soak?

Before the first flight of the day, when the airplane is cold soaked at an ambient temperature of -30 C or below for more than eight hours.

What are the gravity refueling limits?

Wing tanks: 7,290 lbs per side Center tank: N/A Total: 14,580 lbs

What are the pressure refueling limits?

Wing tanks: 7,492 lbs per side Center tank: 4,610 lbs Total: 19,594 lbs

What are the thrust management data requirements?

With the engines running and bleeds configured for take-off, the crew must verify that the target N1 values correspond to the data presented in the thrust setting charts (+/- 1.0%)

When you receive a TCAS RA are you allowed to deviate from ATC clearance?

Yes then notify dispatch in accordance with the GOM

On landing, once thrust reversers have been deployed, do not what?

attempt a go around

What is the requirement for the stall protection switches?

both switches must remain on for all phases of flight