CFM Limitations (chapter 2) Flashcards
List the required equipment specified in the RVSM Req. Equip. List: (4 kinds of equip.)
Autopilots - installed, must be operational.
Altitude Alerting System - installed, must be operational.
Altitude Report Transponder - 2 installed, 1 must be operational.
Air Data Computer - 2 installed, 2 must be operational.
The Flight Deck Door must be kept closed and locked during:
Flight, except to permit access and egress in accordance with the FOM and CFM
Anytime the Flight Deck Door is opened in flight:
A challenged and response closing and locking verification must be used to verify the door is CLOSE AND LOCKED!
Any time one of the required flight crew leaves the Flight Deck:
Another crewmember must be present in the Flight Deck to ensure that the required crewmember is not locked out by the Flight Deck Door.
Approach Category of the CRJ 900/700?
900 = D, but C must be used to determine applicable minimums when using Reduced Landing Reference speeds.
700 = C
MRW (900/700)
Max Ramp Weight
85,000 / 75,250
MTOW (900/700)
Max Takeoff Weight
84,500 / 75,000
may be further limited due to performance considerations
MLW (900/700)
Max Landing Weight
75,100 / 67,000
may be further limited due to performance considerations
MZFW (900/700)
Max Zero Fuel Weight
70,750 / 62,300
Minimum Flight Weight (900/700)
45,000 / 42,000
What are the Cargo Loading Limitations? (baggage compartments)
Aft: 3,650 (company)
Fwd: 1,700 (900) / 1,000 (700)
What is the Max Cruise Mach number is RVSM airspace? (900/700)
900 = 0.82
700 = 0.83
As Altitude increases, Vmo/Mmo generally:
Decreases. (think coffin corner)
What maneuver should be avoided?
Side-Slips
What is turbulence penetration speed? (9/7)
280 KIAS or 0.75 IMN (whichever is lower)
Max tailwind for TO/LD (9/7)
10 knots
Max crosswind for TO on a DRY runway? (9/7)
35 knots (900)
28 knots (700)
(company)
Max crosswind for Landing on a DRY runway? (9/7)
32 knots (900)
30 knots (700)
(company)
Max crosswind for TO/LD on a WET runway? (9/7)
27 (company)
Max crosswind for TO/LD on a DRY runway for a crewmember on high minimums status? (9/7)
25 / 15 SIC
(company)
…wind limits for crewmembers with less than 100 hours may be waived if accompanied by qualified LCA.
Max crosswind for TO/LD on a runway with condition code of “3”? (9/7)
20 (company)
3 = Medium
Max crosswind for TO/LD on a runway with condition code of “2” or “1”? (9/7)
15 (company)
2 = Med to Poor
1 = Poor
Maximum Pressure Altitude for TO/LD?
8,000
Maximum Operating Altitude?
41,000
Ground Ambient Air Temperature Limitations:
-40 deg C to ISA+35 deg C
(-40 is TO only, +35 is TO/LD)
The CRJ 900/700 are considered what LAHSO groups, respectively?
900 = group 8
700 = group 7
If cargo is carried in either cargo compartment, the flight must be within ___ mins of a suitable airport
60 mins
Taxi lights must be switched ___ whenever the airplane is stationary in excess of ___ mins
OFF / 10 mins
What is the maximum speed for ADG operation?
Vmo/Mmo
What is the policy on Circuit Breaker Reset - In Flight?
A circuit breaker must not be reset or cycled unless doing so with procedures in the QRH or, in the judgement of the PIC, resetting/cycling is necessary for safety of flight
When must the Cowl Anti-Ice System be on during FLIGHT operations?
In icing conditions OR when “ICE” is annunciated by the ice detection system
When must the WING Anti-Ice System be on during FLIGHT operations?
In icing conditions during flight under 230 KIAS - OR -when “ICE” is annunciated by the ice detection system
When must the WING Anti-Ice System be on during GROUND (TAKEOFF) operations?
OAT 5 deg C or less during takeoff, and visible moisture in any form.
OAT 5 deg C or less during takeoff, and the runway is contaminated.
When Type II, III, or IV has been applied - wing anti-ice must only be selected ON, if required, JUST PRIOR TO THRUST INCREASE FOR TAKEOFF.
Concerning the pneumatic system: Wing and/or cowl anti-ice selection is….
Prohibited with the APU as a bleed source in manual mode!!!!
What is the minimum ambient temperature for starting a cold soaked APU on the ground?
-40°C
The APU starter motor duty cycle is:
Do not perform more than 3 starts/start attempts in 1 hour.
A two minute delay must be observed between cranking attempts to allow for cooling and drainage
What is the maximum permissible load on the APU generator?
40 kVA (volt-ampere)
What is the limitation of APU bleed air during bleed air extraction, in flight?
APU bleed air extraction is not permitted above to 25,000 feet
What is the limitation for APU bleed air during engine start, on the ground?
No bleed air extraction limitation!!
Each and engine may be started using the APU as a bleed air source!!!
What is the maximum APU operating Altitude?
41,000 feet
Engine warm up limitations: (think gauges)
The engine must remain IDLE until oil pressure reaches normal operating range.
Do not exceed 75% N1 for 2 minutes after start, or until all operating indications are in the normal range, which ever is longer!!
Can we use engine high power schedule switch?
Nooo (company)
The starter must not be used if N2 RPM exceeds ___%
45%
During landing, maximum reverse thrust is prohibited below ____KIAS, and reverse idle should be achieved by ___KIAS
Max reverse thrust is prohibited below 75 KIAS
Reverse idle should be achieved by 60 KIAS
At Endeavor, we are allowed to use reverse thrusters to reverse taxi the aircraft: true or false
FALSE - strictly prohibited!!
Slats and flaps limitations: (2)
- Prohibited to use Enroute
- Flights with the slats and flaps extended at altitude above 15,000 is prohibited
Flight spoilers limitations: (2)
- must not be extended in flight below an altitude of 1000 feet AGL (company)
- must not be extended in flight at airspeeds below Vref +10
True or false: it is OK to turn off either of the stall protection system switches during flight
False - both stall protection system switches must remain ON for all phases
Operating with the autopilot engaged below 600 feet AGL is prohibited except:
- For visual and non-precision approaches: 400 feet AGL
- Precision approaches with both engines operating: 80 feet AGL
- Precision approaches with one engine inoperative: 110 feet AGL
What is the autopilot ILS glide path angle limitation?
cannot exceed 3.5°
In RVSM air space, the ADC source couple to the active AP must be THE SAME as that couple to the ATC transponder?
Yes - RVSM airspace limitation
In regards to cabin pressure, during initial landing the maximum differential pressure must not exceed ___ psi
1.0 psi
What is the maximum Altitude for single pack Operations in the CRJ 700? (cabin pressure concerns)
31,000 feet
What is the maximum Altitude for single pack Operations in the CRJ 900, when there are less than or equal to 82 occupants? (cabin pressure concerns)
What if there are more than 82 occupants? (all occupants include flight attendants)
31,000 feet

25,000 feet

In an emergency, can you use the EMER DEPRESS switch above 15,000 feet?
No it’s prohibited
What are the 5 slats/flaps positions for the CRJ 700 and 900?
1°, 8°, 20°, 30°, 45°
List Vfe for all flaps settings in the 900/700:
1° = 230
8° = 230
20° = 220 (230 for 700)
30° = 185
45° = 170
VLo ret
VLo ext
VLe
200 retraction “below 200 gear up”
220 extension & flying with gear down/locked
What is the maximum airspeed for windshield wiper operation, and for airplane speed in-flight if the wipers have failed!!
250 KIAS
What is the tire speed limit for the 700 and 900? GROUND SPEED
700 = 182 knots GS
900 = 195 knots GS
What are the flaps up and flaps down maneuvering limit load factors?
Flaps up = -1.0G to 2.5G
Flaps down = 0.0G to 2.0G
Maximum ambient air temperature approved for takeoff and landing:
ISA+35°C
Minimum ambient temperature approved for takeoff:
-40°C
Maximum runway slopes approved for takeoff and landing:
-2%/+2%
The taxi lights must be switched OFF whenever the airplane is:
Stationary in excess of 10 minutes 
Describe the wheel brake cooling limits
Cooling times must be observed between a landing, or a low energy rejected take off, and a subsequent take off. Find chart in ODH
What is the maximum negative & maximum positive relief differential pressure (cabin altitude)
+8.7 psi
-0.5 psi
During taxi and takeoff, the differential pressure must not exceed ____ psi
0.1 psi
True or false: the airplane must be completely depressurized prior to opening any of the airplane doors.
True!
List the autopilot restrictions! (5)
Prohibited below 600 feet AGL except when:
- Visual and non-precision approaches to 400 feet AGL
- Precision approaches with both engines to 80 feet AGL
- Precision approaches with one and Jen to 110 feet AGL
- On a glidepath that exceeds 3.5°
Individual AC generator loading must not exceed:
Each Main generator: 40 kVA
APU generator: 40 KVA.
Max altitude 41,000 feet
What are the maximum permissible loads/time limits on the DC system?
In-flight, the maximum continuous load on each TRU is 120 A.
Maximum permissible time on the ground with DC power only, is 5 minutes (to protect the CRT displays)
Can we reset or cycle circuit breakers in flight?
No, unless QRH says to or it is required for safety
Limitations on setting the MDA:
The next highest 10 foot increment must be selected if the altitude is not at a 10 foot increment
When must the Cowl anti-system be ON?
Ground:
OAT 10°C or below & visible moisture, or contaminated surfaces!
Flight:
Icing conditions, or “ICE” is annunciated
When must the wing anti-ice system be ON?
Ground:
OAT 5°C or below & visible moisture, or contaminated surfaces
Flight:
In icing conditions below 230 KIAS, or “ICE“ is annunciated
Define icing conditions
10°C TAT to -40°C SAT & visible moisture (:
Pneumatic system anti-ice limitation?
Anti-Ice selection is prohibited with the APU as a bleed source in MAN mode.
BLEED MISCONFIG
SLD icing limitations:
Wing & Cowl anti-ice must be ON.
Leave when side-window icing occurs.
What are the critical surfaces? (6 listed for Icing) 
Wings, winglets, horizontal stabilizer, vertical stabilizer, control surfaces and engine inlets
If there is frost on the upper fuselage and/or underside of the wing due to cold soak fuel, can you take off?
Takeoff is permitted, provided the layer is thin enough to distinguish surface features
What is the maximum permissible fuel imbalance between the main wing tanks?
300lbs during takeoff
800LBS all other phases
Center tank fuel limitations?
Fuel in excess of 500 LBS is not permitted unless each wing tank is above 4,400 LBS.
Go around fuel/attitude limitations?
Minimum fuel for go around is 600 LBS per WING tank
Assuming a max airplane climb attitude of 10° nose up
What is the minimum fuel temperature?
For takeoff, engine fuel temperature must be at least 5°C!!!
Fuel cross-flow limitations?
Powered crossflow & gravity cross flow must be OFF for takeoff
APU start limitations?
Minimum temperature for start on the ground is -40°C
No more than 3 starts/attempts in 1 hour, 2 minute delay observed between cranking attempts.
Engine warm-up limitations:
The engine must remain at IDLE until oil pressure reaches normal range.
During all starts - do not exceed 75% N1 for 2 minutes after start, or until all operating indications are in normal range (which ever is longer)
Engine high power schedule switch limitation
prohibited in normal operations
Limitations for a cold soaked airplane? (-30°C or below for more than 8 hours)
- Engines motor for 60 seconds and fan rotation observed
- Thrust reverser’s actuated until deploy and stow cycle is 2 seconds or less
You must use continuous ignition during: (4)
Contaminated runways, moderate+ rain, moderate+ turbulence, TSVC
If using Cowl anti-ice & continuous ignition, select Cowl anti-ice on prior to continuous ignition on
Reduced (flex) thrust takeoff limitations: (4)
Prohibited when:
- anti-ice bleeds in use
- runway contaminated
- Windshear or downdrafts forecastEd
- anti-skid system inop 
Starter cranking limits? (Engine)
The starter must not be used if indicated N2 RPM exceeds 45%
Engine starting ITT limitations? (Ground start VS air start)
At Thrust lever movement from SHUT OFF to IDLE:
ITT must be 120°C or less for all ground starts
ITT must be 90°C or less for all air starts
Thrust reverser speed limitation:
Max reverse thrust: prohibited below 75 KIAS
Reverse idle: should be achieved by 60 KIAS
Slats and flaps limitation: (3)
Enroute use is prohibited.
Use at altitudes above 15,000 feet is prohibited.

Use while holding in icing conditions prohibited.
Flight spoilers limitations: (2)
Must not be extended below 1,000 feet AGL
Must not be extended at airspeeds below VREF +10
Stall protection system limitation:
Both stall protection system switches must remain ON for all phases of flight
Max Vmo/Mmo
VMO = .85
MMO = 335 KIAS
