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38 Cards in this Set
- Front
- Back
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Name 5 subsystems of the 757 auto flight system |
Yaw Damper, Auto Flight Director System, MCDP, Thrust management, Auto-stab trim |
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What phases of flight can auto pilot be engaged |
All but takeoff |
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State the type and location of the AFDS warning and caution indications |
A/P disengage red warning on MIP A/P fail amber caution on MIP Aural warning Master caution on glareshield EICAS A/P disengaged on EICAS |
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4 AFDS outputs |
Primary flight controls EFIS EICAS Warning electronics unit |
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Location of auto pilot lateral guidance servos |
L and C in the left hand wing root R in the right hand wing root |
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Which button is used to command the autopilot to a set EPR |
Thrust button on the MCP |
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Which button is used to initiate a flight level change |
FLCH button on MCP |
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What precautions are there so that a failure in the mode control panel do not affect the AFCS |
Having a A and B channel for dual redundancy |
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Which A/P mode tends to overspend or stall the aircraft |
V/S mode |
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What is the difference between Heading hold and Lateral navigation |
Lateral nav takes commands from the FMC whereas heading hold is controlled manually |
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What is the difference between a LAND 2 and a LAND 3 indication on the ASA's |
LAND 3 is determined valid when three FCC's, A/P servos, and outer loop data is normal whereas LAND 2 requires only two FCC's LAND 3 = Fail operational LAND 2 = Fail passive |
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State the location of the go around switch and the A/T disconnect |
A/T on the outside of the throttles Go around underneath the throttles |
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What are two modes which it is not possible to enter go around mode |
A/P disconnected Takeoff |
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What limitations are there during a go around procedure in terms of Takeoff and Glideslope |
Can not exit into these modes after Go around |
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What happens to the A/T and elevators during a Go Around |
Throttles command 2000ft per minute climb and elevators will pitch up |
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The FCC's have functions that are not able to be used in our aircraft. How might these functions be activated |
By pin programming |
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What is the device that stops damage to the system if the force coming from the control wheel is opposite from the force from the auto pilot system |
Over-ride mechanism |
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How does cam out occur |
When there is a disagreement between the two LVDT's in the servo cam out will occur and disengage the A/P |
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When does the A/P provide input to the rudder |
During landing and rollout |
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How does Auto throttle achieve the FLCH function |
The throttles will automatically move to acquire the calculated EPR and reach the selected altitude |
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What are the names of all the modes on the TMSP |
Takeoff/Go aroundOAT adjust knob (de-rate) 1 - 6% below max climb power Takeoff/Go aroundOAT adjust knob (de-rate)1 - 6% below max climb power2 - 12% below max climb powerCRZ - cruise powerCLB - max climb power CONT - max continuous power 2 - 12% below max climb power CRZ - cruise power CLB - max climb power CONT - max continuous power |
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Why is there a tacho generator connected to the auto throttle servo motor |
Provides feedback to the TMC so it doesn't overshoot its set EPR |
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How is the auto throttle servo disconnected when the throttle is moved manually |
By a clutch pack releasing it |
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Can the TMS control the throttles separately |
No, there is only one actuator that moves both throttles |
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Auto throttle disconnect indications |
A/T disconnect Annunciation on the MIPAural warningEICASMaster caution Aural warning EICAS |
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Three purposes of the Yaw Damper system |
Turn coordinaton Counter sideslip Give control to the A/P for autoland CAT III |
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Sensors that provide sideslip information to the Yaw Damper modules |
2x Modal suppression accelerometers |
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What systems require to be up and running for a Yaw Damper test |
1x IRU, EICAS, L and C hydraulics |
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How is Mach/Speed mode activated for Auto stab trim |
Automatically depending whether the flaps are up or down 20 seconds after take off |
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Modes of priority for stab trim |
1. Manual electric/alternate trim 2. Auto stab trim (FMC) 3. Mach/Speed |
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Which stab trim component generates auto trim commands and what component carries it out |
Generated by the FCC's and carried out by the selected SAM |
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Three primary systems that send data to the MCDP |
3x FCC, 1x TMC, 2x FMC |
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Functions of the Thrust Management System |
Calculates EPR Calculates upper and lower EPR limits for varying flight conditions Interfaces with A/P and A/T to achieve automatic throttle control Display EPR on EICAS Display TMS mode on EADI and EICAS Carry out self testing |
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Where does the PLA sensor send electrical signals |
TMC BVCU |
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What do the TMSP buttons do |
Change the EPR reference bug on EICAS |
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Purpose of the STCM |
To provide direction and rate control to the stabilizer trim balk screw actuator |
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What system varies the rate of movement of the stab trim according to airspeed |
The elevator feel computer |
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What interface does the SPMs provide |
An interface between the LSTMs and the FCCs |
