salvatore

How many total proximity sensors are dedicated to monitoring the position of the Main and Nose Landing Gear Doors?. Six proximity sensors monitor the gear door position (three per system). Eight proximity sensors monitor the door position (System 1 and System 2 for 4 doors total). Ten proximity sensors are used, monitoring uplocks and door positions.

Which dual modules control the electric lockout actuators for the outboard ailerons using speed inputs from the Air Data Computers (ADC)?. The Spoiler Control Modules (SCM) handle the lockout function in conjunction with speed brakes. The Rudder Ratio Changer Modules (RRCM) and the Stabilizer Trim Aileron Lockout Modules (SAM) electronically control the actuators. The Yaw Damper/Stabilizer Trim Modules (YSM) provide the necessary high-speed signals.

What approximate breakout force range is required at the rudder pedals due to the mechanical feel system in the aft quadrant assembly?. A minimum force of 14 lb is required at the pedals, increasing up to 77 lb at the maximum rudder deflection input. A fixed breakout force of 25 lb is applied through the aft quadrants until hydraulic pressure stabilizes the actuator. A nominal centering force of 4 lb is constantly applied by springs, overcoming friction up to 41 lb at the stops.

Which hydraulic systems supply power to the two Stabilizer Trim Control Modules (STCMs)?. The Left STCM receives power from the Left hydraulic system, and the Right STCM from the Center system. Both STCMs are powered by the Center system, but the left STCM uses t PTU reservoir. Both STCMs receive power exclusively from the Center hydraulic system, supplBoth STCMs are powered by the Center system, but the left STCM uses the PTU reservoir emented by the Right system via the PTU.

What is the primary function of the Rudder Ratio Changer (RRC) mechanism in relation to flight conditions?. It provides mechanical feedback to the control pedals, increasing feel force relative to the commanded yaw rate. It electronically adjusts the trim actuator travel based on stabilizer position inputs during takeoff phases. It limits rudder authority as a function of increasing airspeed to prevent potential structural overloads.

What condition must be met for the Stick Nudger actuator to extend and apply a column forward force for stall recovery?. Only one Stall warning computer is required, provided the autopilot is disconnected. Windshear detection is active and the airplane is in the air mode, regardless of flap/slat position. Both Stall Warning Computers must signal a stall warning while the flaps and slats are retracted.

What input source provides Mach and computed airspeed data for the Mach Trim function handled by the YSMs?. The Flight Control Computers (FCCs) transmit air data via the Flight Management Computers. The Flap/Slat Position Modules (FSPMs) provide the required speed inputs for Mach Trim logic. The Air Data Computers (ADCs) supply necessary Mach and Computed Airspeed.

How many total hydraulically operated Power Control Actuators (PCA) are employed for the primary flight controls?. A total of twenty-nine actuators are employed, excluding the secondary control systems. A total of twenty-four actuators are distributed across the primary flight control surfaces. Exactly thirty-two actuators are used, including the three leading edge control actuators (LCCAs).

What criteria defines the activation of the Antiskid Locked Wheel Protection, and under what condition is this function inhibited?. If a wheel speed drops below 50 knots, pressure is applied to the adjacent wheel, inhibited during touchdown protection engagement. If one wheel stops rotating during braking, a pressure release command is sent, inhibited above 25 knots ground speed. If a wheel's velocity falls below 30% of its fore or aft paired wheel's velocity, inhibited below 25 knots ground speed.

What specific hydraulic system provides pressure to operate the landing gear and each main gear door?. The Left hydraulic system provides primary extension and retraction power. Both Left and Right hydraulic systems provide independent pressure for gear operation. The Center hydraulic system pressure is used for landing gear and main gear door operation.

Where is the service station for the hydraulic reservoir located?. In the forward cargo compartment, accessible via a small floor panel. In the right-hand aft body fairing area immediately aft of the RH wheel well. In the main equipment center next to the Center Hydraulic System pumps.

What primary function does the Power Supply Module (PSM) perform within the Control System Electronic Unit (CSEU)?. It generates excitation signals exclusively for the hydraulic Power Control Actuators (PCAs). The PSM receives 28v DC power and outputs unregulated 115v AC power for redundancy. The PSM supplies the CSEU with necessary DC regulated and AC unregulated power.

What detection mechanism ensures system shutdown in the Flap Asymmetry Protection System?. A difference in resolver degree input equivalent to 12% of total Slats drive shaft travel between monitored positions. A difference of more than 100 drive shaft revolutions detected over five consecutive seconds. A difference in resolver degree input revolutions between monitored positions resolvers equivalent to 43 1/4 drive shaft revolutions.

Which systems input to the anticipation logic circuits to determine when the ADP should operate in AUTO mode?. Speedbrake lever, Flap / Slat Electronic Unit (FSEU), and Hydraulic Motor / Generator status. All three ACMPs, Elevator Feel Computer, and Rudder Ratio Changer Modules (RRCM). Engine fire switches, Hydraulic Shutoff Valves, and ADIRU Mach inputs.

What is the primary hydraulic source for the Normal Brake System and its accumulator?. The Center hydraulic system pressurizes the normal brake system. The Right hydraulic system pressurizes the normal brake system and th accumulator. The Right hydraulic system provides high pressure to the normal brake system and center hydraulic system to the accumulator.

What mechanism primarily locks the Main Landing Gear (MLG) in the UP (retracted) position?. The MLG is locked up by the main gear door linkage interacting with the uplock hook. The MLG is locked up by the hydraulic pressure applied to the retract actuator. The MLG is locked up by an over center locking mechanism on the side and drag braces.

Which specific modules are included in the Control System Electronic Unit (CSEU) collection on new B767-300 airplanes, besides the PSMs?. Two Yaw Damper/Stabilizer Trim Modules (YSM) and six Spoiler Control Modules (SCM). Two Yaw Damper Modules, five Spoiler Control Modules, and one Stabilizer Trim Module. Four Stabilizer Trim Modules and four Rudder Control Authority modules.

How many Power Control Actuators (PCAs) are utilized to operate the elevator surfaces, and from which hydraulic systems do they receive power?. Two sets of dual-tandem actuators, each utilizing dedicated Left and Right system hydraulic power sources. Six PCAs total (three per side), powered by three independent hydraulic systems. Three PCAs total (one for each elevator segment), driven exclusively by the Center Hydraulic System.

How is the Nose Gear (NG) strut movement utilized to operate the forward nose gear doors?. The nose gear doors are operated hydraulically by a dedicated door actuator. The nose gear doors are controlled by an electric actuator linked to the alternate extend system. They are mechanically sequenced by cranks and rods held in place to open when the gear is extended or retracted.

What is the necessary action if the nose gear turn angle is expected to exceed 65 degrees during a towing operation, according to procedure?. The nose gear steering torsion links must be disconnected prior to the commencement of the tow operation. The cable compensator rig pin must be removed to prevent damage to the upper cable loop the nose gear steering torsion links must be disconnected prior to the commencement of the tow operation ensioning device. The bypass valve on the Nose Wheel Steering Metering Module must be manually actuated to the open position.

What is the function of the Nose Gear Priority Valve during a gear retraction cycle?. It delays hydraulic flow to the lock actuator until the gear is fully centralized. It is free flowing for gear retraction but requires 1500 psi pressure before extension flow. The valve ensures pressure builds to 1500 psi before allowing flow to the retract actuator.

What component contains an autopilot servo and hydraulic booster that powers the wing cables for the aileron system?. The FSPM (Flap/Slat Position Module) incorporates the LVDT necessary for system synchronization. The LCCA (Lateral Control Cable Actuator) is primarily responsible for autopilot control inputs. The PCA (Power Control Actuator) includes an integral autopilot servo for control redundancy.

What are the activation criteria for the Speedbrake Autostow System regarding airplane weight and airspeed for the 767-300?. Gross weight above 300,000 lbs and airspeed greater than 340 knots, coupled with a pitch-up maneuver. Gross weight above 340,000 pounds and airspeed greater than 320 knots, during a pitch-up maneuver in excess of 2.5 G. Airspeed above 300 knots and leading edge devices extended, regardless of gross weight.

When the shutoff valves are not fully open, what indication appears on the upper EICAS display?. A single "FLT. CONT VALS" advisory message appears if more than one valve is affected. A cautionary level message, "HYDRAULIC VALVE," is immediately displayed on the P5 panel and upper EICAS display. A specific caution message regarding hydraulic pressure loss is displayed immediately.

What are the maximum steering angles commanded by the steering tiller and the udder pedals, respectively, for nose wheel steering?. Tiller: 75 degrees L/R; Rudder: 5 degrees L/R. Tiller: 65 degrees L/R; Rudder: 7-1/2 degrees L/R. Tiller: 45 degrees L/R; Rudder: 15 degrees L/R.

What mechanism physically links the pilot's and first officer's control columns and dictates the force required for operation if a jam occurs in one system?. The mechanical feel spring and cam, which provides a constant centering force of approximately 5 lb at breakout. The aft quadrant override mechanism, which requires a minimum 25 lb force at the column for breakout. The tension regulator quadrants, designed to maintain constant cable tension and requiring a force of 14 lb at maximum rotation.

What type of devices move the main flight controls of the B767-300, and what is notable about manual reversion capability?. Hydraulically operated PCAs (Power Control Actuators) with no manual reversion capability. Dual electric motor drive units providing continuous control with limited cable input. Center hydraulic system power with a limited mechanical reversion capability.

Which hydraulic pump draws fluid from the standpipe installed in the Left and Right system reservoirs?. The ACMP (AC Motor Pump) draws fluid from the standpipe, while the EDP draws from the bottom. Both the EDP and ACMP are supplied with hydraulic fluid from the standpipe to prevent cavitation. The EDP (Engine Driven Pump) draws fluid from the standpipe, while the ACMP draws from the bottom.

What four EICAS Level A messages are generated for improper takeoff configuration?. CONFIG, MASTER WARNING, THRUST, and FLIGHT CONTROLS messages. LE SLAT, TE FLAP ASYM, SPEEDBRAKE, and PARKING BRAKE status messages. FLAPS, STABILIZER, PARKING BRAKE, and SPOILERS messages are generated.

What minimum flow rate (GPM) is required from the ADP or ground hydraulic power to perform the RAT backdrive test procedure?. A flow rate of 20 gpm is mandated to achieve sufficient RPM for testing. A flow rate of 16 gpm is the minimum required to test the RAT. A flow rate of 10 gpm is the minimum required to test the RAT fully.

What systems receive hydraulic pressure from the Right system?. Elevators feel computers, Flap PDU, and the Auxiliary PTU pump. Landing gear primary extension, nose wheel steering, and Alternate brakes. Ailerons, Spoilers, Lateral LCCAs, Rudder, Elevator, Autopilots PCAs and Normal Brakes.

What is the primary function of the Door Operated Sequence Valve regarding Main Landing Gear retraction?. It sequences the main gear doors to lock closed once the retract cycle is complete. It ensures hydraulic power is only available for retraction when the gear is fully down and locked. It ensures hydraulic power is restricted from retraction before the main gear door is fully open.

In the event of Center hydraulic system failure, which reserve component provides segregated hydraulic power for alternate braking and nose wheel steering?. The C-1 ACMP pump draws fluid from the reservoir supply below the standpipe level. The Air Driven Pump (ADP) automatically engages using pneumatic pressure if both main ACMPs are OFF. The Power Transfer Unit (PTU) automatically activates to supply isolated pressure from the Right hydraulic system.

What mechanism is mounted below of each inboard aileron to lower or droop the ailerons via trailing edge flap system operation?. The Lateral Control Trim Mechanism (LCTM) controls symmetric aileron deflection. The Aileron Alignment Actuator (AAA) controls the aileron position relative to the flaps. The Aileron Droop Mechanism (ADM) adjusts the inboard aileron angle.