Cruise Flashcards
What is optimum cruise altitude?
The optimum pressure altitude for a given weight, CG, speed and OAT that gives the maximum specific range
What cold cause the flight crew to not choose the optimum cruise altitude?
Correct altitude for direction, ATC restrictions//clearance, not enough buffet margin to fly at that altitude.
What trim does the autopilot manipulate?
pitch
When the autopilot is engaged what rims are left to the pilot to manipulate?
Roll and Yaw
When is the recommended procedure for trimming the YAW (rudder)?
With the autopilot engaged, ensure the fuel is balanced, engine thrust is symmetric, HDG mode is engaged and allow five seconds between switch activations to avoid over trimming
When is the recommended procedure for trimming the Roll (aileron)?
Roll should be trimmed after YAW, with the exception of a wing heavy condition during manual flight.
How can an out of trim aircraft affect the fuel burn?
The autopilot will add rudder and aileron inputs to compensate potentially increasing drag thus affecting the fuel burn.
When will fuel monitoring take place?
At Top of climb(TOC) and once every hour thereafter
What is the minimum fuel level for the ERJ 175
2,500lbs
what is the emergency fuel level?
1,500lbs
Is it a violation of company policy/FARs to plan to land below the min/emerg fuel levels?
YES
Is it a violation of company policy/FARs to land below the min/emerg fuel levels?
NO
What is the minimum and emergency fuel levels calculated at?
MAX Landing weight
What does the minimum fuel level provide , based on what conditions?
45 min of fuel at 1,500AFE/GREEN DOT, CLEAN
When should MINIMUM flue be declared?
When the estimated fuel remaining on touchdown will be less than 45 minutes
What does the emergency fuel level provide , based on what conditions?
30 min of fuel at 1,500 AFE /GREEN DOT, CLEAN
When should emergency fuel be declared?
When the estimated fuel remaining on touchdown will be less than 30 minutes
When declaring Emergency fuel to ATC, what must be reported, and time permitting who else should be notified?
Fuel remaining on board in minutes and notify dispatch if time permits
When is a fuel imbalance considered a normal condition and can be corrected without reference to the QRH?
A Fuel imbalance of less than 800 lbs with no EICAS message
If a fuel Imbalance caution message is not displayed and a cross feed operation is performed what additional EICAS meassage will be displayed regardless of the imbalance value?
FUEL EQUAL - CROSSFEED OPEN
Why should rapid and large thrust lever changes be avoided?
It can be detrimental to engine components and accelerate engine deterioration.
What can cause the autothrottles to completely retard and advance?
Large/excessive speed changes with the autothrottles engaged.
how should excessive thrust lever movement be prevented (if it occurs) while operating on autothrottles?
overriding the thrust levers is preferrable to disconnecting the autothrottles
If turbulent air can not be avoided, what are the best practices for penetration?
Reduce altitude to increase buffet margin, do not chase airspeed maintain attitude and do not use large inputs, after established, trim for penetration speed do not change trim control, the aircraft with the elevators, do not chase altitude;allow airspeed and altiude to vary MAINTAIN ATTITUDE
Should the autopilot be used for flight in severe turbulence?
Yes
What four items are required for flight in RVSM airspace
- Transponder,
- either primary altimeter system (CA or FO),
- altitude alerting and capturing capability,
- autopilot.
what item is commonly and mistakenly thought of as being required for flight in RVSM
TCAS
When can the autopilot be disengaged during level curise fight in RVSM airspace?
To retrim the aircraft or due to turbulence
What is the minimum/recommeded holding conifguration/speed?
- clean configuration
- gear up
- speed not less than green dot
What is the Skywest minimum holdingt speed in icing conditions and out of icing conditions?
- Icing conditions - Maximum endurance/210kias whichever is higher
- Out of icing - not less than green dot
Operation is severe icing conditions is?
PROHIBITED
When may asymmetrical ice shedding (engine) be encountered?
operations in moderate to severe icing conditions
Are operations in severe icing conditions approved/permitted?
NO
What pilot action should be performed if operating in moderate to severe icing condiotions with regards to the engines?
- reduce one thrust lever, at a time, towards idle
- advance to 70% N1 for 10-30 seconds
- then return thrust levers to position required for the conditions
- procedure should be repeated every 15 minutes if fan ice build up is suspect (high indicated or percieved)
During the engine ice shedding procedure what may happen
just prior to actual ice shedding and will not affect the engine?
vibration may peak to the maximum value
Is the ERJ-175 certified/capable of flying in freezing rain/dizzle (SLD) conditions?
NO
when in flight what cues would determine the aircraft is encountering severe icing conditons?
Abnormal ice formation on areas not usually affected or ice formation on a previouly treated upper surface of the wings; anytime the anti-icing system cannot keep the airplane clean.
What indication represents the driftdown speed during OEI operations?
Green Dot
what is the driftdown procedure?
- AT off
- operating engine thrust lever TO/GA
- Verify thrust setting CON
- set drift down altitude
- set drift down speed (green dot)
- reaching green dot speed select FLCH
What typically causes unreliable airpeed indications?
- Partial static system blockage
- frozen moisture
- damage
- failing parts
If the airspeed indication becomes unreliable, what AFCS components must be turned off?
- AT
- autopilot
- flight director
Should the FD be followed/trusted if airpeed indication becomes unreliable?
NO
Use of speed brakes should be __________ when aispeed is unreliable
avoided
During high altitude operations (RVSM airspace), what engine abnormalities may be encountered during high angle of attacks associated with airpeed deterioration and stall conditions?
- surging
- compressor stalls
- loss of thrust
- flame out
- core lock
When should the stall recovery procedure be intiated?
- immediately recognizing stall condition
- stick shaker activation
- feeling stall buffet
When the FBW system is operating in normal mode, setting the thrust levers to the MAX position will disconnect the ________and automatically retract the ___________?
- autothrottle
- speed brakes
In normal mode, the high level functionalities of the FBW system, will__________?
automatically neutralize any pitch up tendency caused by adding thrust
If the FBW system is reverted/operating in direct mode more_______
may be required to produce the same pitch change.
control column input
When might an amber vibration indication be displayed on the EICAS?
At TOC, or cruise, at 0.78M and N2 at 84-89%
If reducing speed, at cruise, with an amber engine vibration
EICAS message, does not clear the message what must be promptly accomplished?
applicable QRH procedure
If engine vibration occurs under any circumstances other than the .78MACH scenario what must be accomplished?
QRH procedure
