Chapter 3 Limitations Flashcards
When is takeoff on contaminated runways prohibited?
- standing water is more than 0.5 inch in depth
- slush is more than 0.5 inch in depth
- wet snow is more than 1.0 inch in depth
- dry snow is more than 3.0 inches in depth
- crosswind or tailwind component exceeds the guideline for braking action in 3.7 Braking Action Takeoff and Landing Wind Compoment Guidelines
All contaminated performance data will be based on ________ take offs
STATIC
When is landing on a contaminated runway prohibited?
- standing water is more than 0.75 inch in depth
- slush is more than 0.88 inch in depth
- wet snow is more than 1.5 inch in depth
- dry snow is more than 3.75 inches in depth
- crosswind or tailwind component exceeds the guideline for braking action in 3.7 Braking Action Takeoff and Landing Wind Compoment Guidelines
Cabin ozone concentration during flight cannot exceed what?
- 25 ppm by volume, sea level equivalent, at anytime above FL320 and
- 1 ppm by volume, sea level equivalent, time weighted average during any 3-hr interval above FL270
Sea Level equivalent refers to conditions of 25C and 760 mmHg
Ref: FAR 25.832
Taxi time at a stabilized ___% N_ or below may be credited toward the 2 min cool down period
80 / N2
CRJ-200 engine type
CF 34-3B1
N1 RPM indication limits
RED: 98.6
AMBER: —
GREEN: 0 - 98.5
ITT C (normal takeoff
RED: 900 C for first 2 min
884 for the next 3 min
AMBER: ---
GREEN: 0-900 for the first 2 min
0-884 for the next 3 minITT C Go Around or APR thrust
RED: 928 for the first 2 min
900 for the next 3 min
AMBER: ---
GREEN: 0 to 928 for the first 2 min
0 to 900 for the next 3 minITT C maximum Continuous Thrust (MCT)
RED
900 *
874-900 **
900 **
AMBER
874 to 900 *
GREEN
0 to 874
- During MCT Amber band and red tick mark appears if ITT is greater than 874 C
- During MCT Amber band becomes a red band if ITT remains above 874 C for more than 30 sec or if ITT is greater than 900 C. Red tick mark stays at 900 C
MAX N2 RPM Wing Anti-ice ON
RED: 99.3%
AMBER: 0 to 77.0%
GREEN: 78 to 99.2
Note: green is not the lowest number!
MAX N2 RPM Wing Anti-ice OFF
RED: 99.3
AMBER: —
GREEN: 0 to 99.2
Oil Temperature indications
RED: 163 C
AMBER: 150 to 162 C
GREEN: -40 to 149
Oil Pressure PSI indications
RED: 0-25
AMBER: 116 to 156
GREEN: 26 to 115
Engine Operating Limits
START -Core RPM N2%
- Fan RPM N1%
- ITT C
20
900 C
Engine Operating Limits
Idle -Core RPM N2%
- Fan RPM N1%
- ITT C
56.5 to 68.0 **
** engine to engine N2 split at idle is 2%. If N2 is 57% or less and OAT is -20 C or above do not accelerate above idle
Engine Operating Limits
Acceleration -Core RPM N2%
- Fan RPM N1%
- ITT C
900 C
Engine Operating Limits
Max Continuous -Core RPM N2%
- Fan RPM N1%
- ITT C
- 2
- 6
874
Engine Operating Limits
Normal Takeoff -Core RPM N2%
- Fan RPM N1%
- ITT C
- 3
- 2
884 (5 minutes)*
900 (2 minutes out of 5 total transient)*
*transient limits
Engine Operating Limits
Go Around or APR thrust -Core RPM N2%
- Fan RPM N1%
- ITT C
- 4
- 6
900 (5 minutes) *
928 (2 minutes out of 5 total transient) *
Airplane Cold Soak definition
Before the first flight of the day when the OAT is -30C or below for 8 hours
What must you do if the aircraft is determined to be in a cold soaked condition?
Engines must be motored for 60 sec and fan rotation must be verified before engine start is initiated AND
thrust reverses must be actuated until the deploy and stow cycle is less than 5 seconds
Oil Temperature limits
Starting
Maximum continuous
Maximum permissible
-40C
+155
+163C (15 min max)
Oil Pressure limits
Steady state idle Takeoff power Maximum continuous Maximum transient Maximum transient after cold start (10 min max)
25 psi
45 psi
115 psi max
–
156 psi / 130 psi at idle
What must be done if an APR INOP message is received on the EICAS
APR must be selected OFF
Max ITT for all ground starts
120 C
Max ITT for all air starts
90 C
Engine Relight Envelope WINDMILLING
Altitude 21,000 feet to 15,000 feet: 300 KIAS to Vmo and from 12 to 55% N2
Altitude less than 15,000 feet: speed 300 KIAS to Vmo and from 9 to 55% N2
Engine relight envelope STARTER ASSISTED CROSSBLEED
Altitude from 21,000 feet to Sea Level: speed from VREF up to Vmo be from 0 to 55% N2
Application of reverse thrust above ____ N1 is not permitted at airspeeds below ____.
Below ____ kts, reverse thrust must be reduced to _______
60% / 75 KIAS
60 KIAS / idle (30%)
Backing up by use of the thrust reversers is __________
PROHIBITED
FLEX takeoff limitations
Anti Skid must be operative
PROHIBITED ON contaminated runways
PROHIBITED if the airplane has been de-iced
PROHIBITED if wing and or cowl anti ice bleeds are in use
PROHIBITED if warnings of wind shear or down drafts have been forecast
PROHIBITED with an engine that cannot achieve maximum thrust
PROHIBITED when a special departure procedure specifies full thrust for takeoff
Maximum fuel imbalance
800 lbs
Fuel Quantity PRESSURE refueling
Left. 4760
Right. 4760
Center. 4998
Total: 14,518
Fuel quantity GRAVITY refueling
Left. 4480
Right. 4480
Center. 4930
Total: 13,906
Minimum fuel quantity allowed for a go around (assuming 10 degrees pitch up)
450 lbs per wing tank
Takeoff with engine fuel temp below ____ is prohibited
5 C
Bulk fuel temperature limits for ASTM D1655 jet A
Takeoff limit
Freezing point
- 30C
- 40C
When using JET A type fuel with ambient temperature of ____ C or below, the bulk fuel temperature prior to flight must be verified to be above ____C
- 30
- 29
Minimum temperature for cold soaked APU starting on the ground
-40C
APU Maximum RPM
107%
APU MAX EGT
Normal
Below 60% RPM
All conditions
743 C
870 C
974 C
APU maximum starting Altitude
30,000 feet
APU Maximum operating altitude
36,000 feet
Max altitude for Air Conditioning bleed Ir xtraction from APU
15,000
During single engine operations in flight can APU bleed air extraction be used for engine start?
No
Max APU bleed air extraction for engine start inflight
13,000 feet
Can both engines be started using APU bleed air source?
Yeah sure
If both engines are to be started using the APU bleed air, what limitation exists?
The operating engine must not exceed 70% N2
APU EGT indications
GREEN
AMBER
RED
0 to 712
713 to 742
More than 743
APU RPM% indications
GREEN
AMBER
RED
0 to 100
101 to 106
More than 107
If the APU door position is unknown…
Max 300 KIAS or APU must remain in operation
Maximum relief differential pressure
8.7 psi
Maximum negative differential pressure
-0.5 psi
Maximum differential pressure for taxi, takeoff and landing
0.1 psi
Maximum altitude for single PACK operation
25,000 feet
Bleed air ____ stage valves must be ___ for takeoff and landing if the Anti ice system has been selected ON
10th / closed
Can you use SPEED MODE during approach?
Ha….no
Autopilot altitudes
600 feet AGL
400 AGL for non precision approach
80 feet AGL for precision approach
Maximum altimeter deviation on the ground
75 feet
Max in flight altimeter deviation
Both altimeters should be checked every hour and be within 200 feet of each other
Permissible AC Electrical load limit
0-30000 feet: 30 kva main gen / 30 kva APU gen
30001 - 36000: 25 kva main gen / 30 kva APU gen
Maximum load on each TRU
100 amps
Maximum time limit of ground operations when on DC ground power
5 min
Maximum flap/slat extended altitude
15,000 feet
Upon arrival at the destination airport, an preach shall not be commenced nor shall the flaps be extended beyond the 0 degree position unless….
Precision approach: the RVR is confirmed (and expected to remain that way) to be above the required visibility
Or
Non precision approach the ceiling and RVR are confirmed (and expected to remain that way) are above the landing minima for that approach
OR
an emergency situation occurs that requires landing at the nearest suitable airport
Taxi lights must be switched ____ when the airplane is stationary for more than ____
OFF / 10 min
