9 - 757 Flight Controls

FLIGHT CONTROLS SHUTOFF SWITCHES There are _________ guarded flight control shutoff switches that control hydraulic power to the stabilizer, elevators and rudder. THREE. TWO. FOUR.

CONTROL JAM If a jam occurs in a column or wheel, the pilot’s can maintain control by:... applying force to the other column or wheel to overcome the jam. applying force to the other rudder or column to overcome the jam.

Flight Control Surfaces Pitch control is provided by: • two elevators • a movable horizontal stabilizer. • two ailerons • ten spoilers.

Flight Control Surfaces Roll control is provided by: • two elevators • a movable horizontal stabilizer. • two ailerons • ten spoilers.

STABILIZER TRIM CONTROL The stabilizer is powered by the ____________ hydraulic systems. There are ____ modules, one for each stabilizer hydraulic source. CENTER and RIGHT / TWO. RIGHT, CENTER and LEFT / THREE.

Electric Trim The alternate trim system must be used to set the stabilizer trim to less than _______ with the flaps up. 3 units. 5 units. 1 unit.

Non–normal Operation The center and right stabilizer cutout switches control power to the respective stabilizer trim control module. Placing both switches in the CUT OUT position removes: all hydraulic power from the stabilizer. electrical power from the stabilizer.

Non–normal Operation (interrupt stabilizer trim commands) The stabilizer trim commands are interrupted;. if the control column is displaced in the opposing direction. if the control column is displaced in the same direction. if the control wheel is displaced in the same direction.

RUDDER RATIO _____________, it limits rudder deflection by reducing the sensitivity of pilot commands, preventing excessive structural loads. At higher speeds. At low speeds.

SPOILERS There are ___ spoiler panels located on the upper wing surface of each wing. 6. 4. 12.

Speedbrake Load Alleviation System The speedbrake load alleviation system is installed on 757-200 airplanes with winglets. It operates in flight when these conditions occur at the same time: • Flaps UP • Above 100,000 kgs • Above 330kt. • Flaps 1 or more • Above 110,000 kgs • Above 330kt. • Flaps UP • Above 90,000 kgs • Above 320kt.

Speedbrake Load Alleviation System 1- If the speedbrake lever is beyond the 50% position, ... 2- If the speedbrake lever is DOWN, ... 3- In either case the pilot may override the speedbrake lever restriction ... 4- When airspeed becomes less than 325 knots ... 1- it will automatically move to 50% position. 2- an attempt to move it past the 50% position will be restricted. 3- by applying additional force to the speedbrake lever. 4- the speedbrake lever movement is unrestricted. 1- it will automatically move to 80% position. 2- an attempt to move it past the 80% position will be restricted. 3- by applying additional force to the speedbrake lever. 4- the speedbrake lever movement is restricted. 1- it will automatically move to 30% position. 2- an attempt to move it past the 80% position will be restricted. 3- by applying additional force to the speedbrake lever. 4- the speedbrake lever movement is unrestricted.

Flaps and Slats TAKEOFF FLAP positions are: Flaps 1, 5, 15, 20. Flaps 1, 5, 15. Flaps 1, 5, 20.

Flaps and Slats LANDING FLAPS positions are. Flaps 25 and 30 (Flaps 20 is used for some non-normal landing conditions). Flaps 25 and 30 (Flaps 30 is used for some non-normal landing conditions). Flaps 20 and 30 (Flaps 20 is used for some non-normal landing conditions).

FLAPS AND SLATS POSITIONS Selection of the flaps 1, 5, 15, or 20 positions commands the slats to __________ position and the flaps to move to the position SELECTED. MIDRANGE. LANDING.

FLAPS AND SLATS POSITIONS Selection of the flaps 25 and 30 positions commands the slats to __________ position and the flaps to move to the position SELECTED. MIDRANGE. LANDING.

FLAP LOAD RELIEF If the flap airspeed placard limit is exceeded with the flaps in the ... 30 position, the flaps automatically retract to position 25. 20 position, the flaps automatically retract to position 15. 30 position, the flaps automatically retract to position 15.

AUTOSLATS Upon receiving a signal from the stall warning system, the slats automatically extend from the _________________________________________ position. The slats retract a few seconds after the signal is removed. MIDRANGE position to the FULLY EXTENDED LANDING. FULLY EXTENDED LANDING position to MIDRANGE.

ALTERNATE MODE Flap/Slat Non–Normal Operation Alternate mode flap and slat extension is limited to: flaps 20. flaps 15. flaps 30.

ALTERNATE MODE Flap/Slat Non–Normal Operation Trailing edge flap asymmetry protection, autoslats, and flap load relief are. not available in the alternate mode. available in the alternate mode.

ALTERNATE MODE Flap/Slat Non–Normal Operation ALTERNATE MODE characteristics: -Limited to flaps 20. -Trailing edge flap asymmetry protection, autoslats, and flap load relief are not available. -Slats are fully extended at flaps 20. -Limited to flaps 30. -Trailing edge flap asymmetry protection, autoslats, and flap load relief are available. -Slats are fully extended at flaps 20. -Limited to flaps 20. -Trailing edge flap asymmetry protection, autoslats, and flap load relief are available. -Slats are fully extended at flaps 25.

Leading Edge Disagreement / Leading Edge Asymmetry / Trailing Edge Disagreement When any of these LIGHTS illuminate: - LE SLAT DISAGREE - LE SLAT ASYM - TE FLAP DISAGREE - TE FLAP ASYM. Hydraulic power to both slats and flaps is automatically shut off. Electrical power to both slats and flaps is automatically shut off. Hydraulic power to flaps is automatically shut off.

Hydraulic Driven Generator EC-KLD When the hydraulic driven generator is supplying electrical power,. hydraulic flow to the slats and flaps is reduced, resulting in increased slat and flap operation time. hydraulic flow to the slats and flaps operate normally. hydraulic flow to the flaps is reduced, resulting in increased flap operation time.

FLIGHT CONTROLS INPUTS Control cables are used for mechanical inputs to ____________ that move the flight control surfaces. The mechanical inputs are for manual controls or the autopilot servos. hydraulic PCU`s. electrical PCU`s.

RAT In case of a dual-engine failure (no engine-driven and electric hydraulic pumps), the CENTER hydraulic system is equipped with a self-deploying RAT. The RAT operates a hydraulic pump that produces emergency hydraulic power for the: LEFT AILERON / RIGHT AILERON / ELEVATORS / RUDDER. RIGHT AILERON / ELEVATORS / RUDDER. LEFT AILERON / RIGHT AILERON / ONE ELEVATOR / RUDDER.

PITCH CONTROL Pitch control is controlled by: - 2 hydraulically powered elevators, - 1 hydraulically powered stabilizer trim system, - and a Mach speed trim system. - 1 hydraulically powered elevators, - 2 hydraulically powered stabilizer trim system, - and a Mach speed trim system. - 1 hydraulically powered elevators, - 1 hydraulically powered stabilizer trim system, - and a Mach speed trim system.

PITCH CONTROL The elevator is powered by: the 3 hydraulic systems (LEFT / CENTER / RIGHT HYD SYS´S). 2 hydraulic systems (LEFT / RIGHT HYD SYS´S). the RIGHT hydraulic system.

ELEVATOR FEEL In case center and right hydraulic pressure is lost, mechanical springs take over for the elevator field computers. mechanical springs take over for the elevator feel computers. the left computer take over for the elevator feel computers. mechanical springs take over for the stabilizer feel computers.

PITCH CONTROL The elevator is powered by: The stabilizer is powered by the center and right hydraulic systems. the 3 hydraulic systems (LEFT / CENTER / RIGHT HYD SYS´S). 2 hydraulic systems (LEFT / RIGHT HYD SYS´S). the RIGHT hydraulic system.

PITCH CONTROL Connect the FLIGHT CONTROLS to the hydraulic power source: 2 ELEVATORS. STABILIZER. 2 AILERONS. RUDDER.

TRIM UNITS RANGE The nose down trim RANGE (white) depends on whether the flaps are UP or not. FLPS UP nose down limit is 3 units FLAPS EXTENDED nose down limit is 0.2 units. FLPS UP nose down limit is 5 units FLAPS EXTENDED nose down limit is 0.8 units. FLPS UP nose down limit is 3 units FLAPS EXTENDED nose down limit is 1 units.

ALTERNATE TRIM SYSTEM Two trim switches located on the left side of the control stand control the alternate trim system which serves as a ___________ stabilizer trim system. BACKUP. PRIMARY.

ALTERNATE TRIM SYSTEM These switches ________ all other stabilizer trim inputs. override. dos not override.

SPOILERS There are ___ FLIGHT SPOLERS panels on each wing. They also provide ROLL control. 5. 6. 12.

SPOILERS There are ___ GROUND SPOLERS panels on each wing. 5. 6. 12.

FLAP LOAD RELIEF The flap load relief system is designed to protect the flaps from excessive air loads. With the flaps at 30, if the airspeed exceeds... the flap 30 airspeed limit (162kt), the flaps automatically retract to 25. When the airspeed is reduced below 162 knots, the flaps return to the selected position. the flap 30 airspeed limit (190kt), the flaps automatically retract to 25. When the airspeed is reduced below 162 knots, the flaps return to the selected position. the flap 30 airspeed limit (162kt), the flaps automatically retract to 20. When the airspeed is reduced below 162 knots, the flaps return to the selected position.

FLAPS AND SLATS ALTERNATE SYSTEM This alternate system is used only when. hydraulic power from the left hydraulic system or the PTU is not available. hydraulic power from the left hydraulic system or the RAT is not available. hydraulic power from the righ hydraulic system or the PTU is not available.

FLAPS AND SLATS ALTERNATE SYSTEM The flap extension time using the alternate flap extension system takes about. 4 times longer than the normal system, or about 2 minutes from up to flaps 20. the same time as normal operatrion. 10 times longer than the normal system, or about 5 minutes from up to flaps 20.