Book 3 - Engine Controls

Question 1

control _____ is the movement of controls due to engine/airframe vibration

it is prevented by adjustable friction devices (_______) fitted in the control quadrant, or by passing the control mechanism through a ______ operated auto throttle system

Answer 1

control CREEP is the movement of controls due to engine/airframe vibration

it is prevented by adjustable friction devices (DAMPERS) fitted in the control quadrant, or by passing the control mechanism through a CLUTCH operated auto throttle system

Question 2

the auto throttle has two main purposes:

• maintain constant ________ during the localiser and glide path phases of an automatic landing
• to close ________ at constant rate during flare

Answer 2

the auto throttle has two main purposes:

• maintain constant AIRSPEED during the localiser and glide path phases of an automatic landing
• to close THROTTLE at constant rate during flare

Question 3

whenever a control run is rigged, it must be remembered that:

• the primary stop is always the maximum fuel flow stop on the engine fuel control unit. the pilot must always have the confidence that the ______ is causing the throttle lever to stop moving forward and NOT the stop on the _____ ____
• if there is more than one engine that the _______ of the throttle levers at any given thrust/power setting must be within the limits described in the manual
• the _____ required to move the throttle levers must always be within laid down limits

Answer 3

whenever a control run is rigged, it must be remembered that:

• the primary stop is always the maximum fuel flow stop on the engine fuel control unit. the pilot must always have the confidence that the ENGINE is causing the throttle lever to stop moving forward and NOT the stop on the FLIGHT DECK
• if there is more than one engine that the STAGGER of the throttle levers at any given thrust/power setting must be within the limits described in the manual
• the EFFORT required to move the throttle levers must always be within laid down limits

Question 4

adjustment to MAX RPM at the engine can affect ______ in the cockpit

Answer 4

adjustment to MAX RPM at the engine can affect BOUNCE in the cockpit

Question 5

when all work on the controls has been completed, the work should be subject to _________ inspections

Answer 5

when all work on the controls has been completed, the work should be subject to DUPLICATE inspections

Question 6

in order to achieve the correct _____ of throttle movement, it must be remembered that:

• changing the radius of an adjustment will alter the ______ of range
• changing the length of a rod will change the _________ of the range
• stagger angle is corrected by changing the ______ of the adjusting rods

Answer 6

in order to achieve the correct RANGE of throttle movement, it must be remembered that:

• changing the radius of an adjustment will alter the AMOUNT of range
• changing the length of a rod will change the LOCATION of the range
• stagger angle is corrected by changing the LENGTH of the adjusting rods

Question 7

one of the primary considerations of a duplicate inspection on the engine control system will be to ensure there is ______ at the maximum throttle position

this is to ensure that the full signal from the ___________ in the throttle control unit has been achieved in the same way that the mechanical fuel flow stop has been reached on a mechanical system

Answer 7

one of the primary considerations of a duplicate inspection on the engine control system will be to ensure there is BOUNCE at the maximum throttle position

this is to ensure that the full signal from the POTENTIOMETERS in the throttle control unit has been achieved in the same way that the mechanical fuel flow stop has been reached on a mechanical system

Question 8

effort required to move the throttle levers is accomplished through a _____-out or ____-off check

the effort needed is usually between .-_._lbf

FADEC engines with a high degree of supervisory control require ____ effort because the mechanical control linkage is considerably ______ and/or much of the work is done by throttle servo motors

Answer 8

effort required to move the throttle levers is accomplished through a BREAK-out or PULL-off check

the effort needed is usually between 1.5-4.5lbf

FADEC engines with a high degree of supervisory control require LESS effort because the mechanical control linkage is considerably SHORTER and/or much of the work is done by throttle servo motors

Question 9

throttle lever bearing checks on aircraft with three or four engines should be carried out twice on the ______ levers, pushing towards each of the adjacent levers in turn

Answer 9

throttle lever bearing checks on aircraft with three or four engines should be carried out twice on the CENTRE levers, pushing towards each of the adjacent levers in turn