During maintenance of the flight-compartment drip pan, what is its principal protective function?, To collect condensation from the flight-compartment ceiling and route it into the aircraft drain system to protect electrical equipment from water damage and corrosion., To provide thermal insulation between the overhead instrument panel and the fuselage skin., To prevent cabin air from entering the area above the overhead instrument panel during rapid decompression., What is the purpose of the flexible baffle installed on the outboard side of a passenger-compartment air return grille?, To control reverse airflow from the lower lobe if a lower-lobe fire occurs., To increase airflow from the passenger cabin into the lower lobe during normal ventilation., To prevent the grille from vibrating during rapid decompression., Why is the armrest adjacent to an emergency exit or escape hatch attached to the hatch rather than directly to the passenger seat?, To allow the armrest to act as a secondary latch for the escape hatch., To ensure the escape hatch can open quickly without the armrest obstructing its movement., To transfer emergency evacuation loads from the hatch into the seat track., A Passenger Service Unit is unlatched for maintenance and begins to swing downward. What feature prevents excessive movement of the unit?, A lanyard limits how far the Passenger Service Unit can swing open., The gasper-air hose acts as the mechanical travel stop., The inboard support rail mechanically locks the unit at approximately 45 degrees., A heavily loaded overhead stowage bin has its Bin Assist Mechanism armed. Which statement correctly describes the mechanism during subsequent closing and opening?, The Bin Assist Mechanism disengages as soon as the bin reaches the closed position., The Bin Assist Mechanism remains permanently engaged until manually reset from inside the strongback assembly., The Bin Assist Mechanism assists closing, remains engaged after the lever disarms, and only disengages when the bin bucket is opened fully., Why must the cargo-compartment liner joints, fastener holes and panel seams remain effectively sealed?, To maintain an airtight compartment required for Class D smother-type fire suppression., To prevent conditioned air from entering the cargo compartment during flight., To maintain structural pressure loads between the cargo liner and the fuselage skin., The forward cargo door cannot be unlatched because the internal handle mechanism is obstructed. What alternate access provision is described in the training material?, The aft ceiling blowout panel near the eighth window cutout from the rear., A 20-inch by 20-inch access panel in the passenger-compartment floor near the tenth window cutout from the front., A removable panel in the forward galley floor immediately above the cargo door., What causes the battery in the portable Emergency Locator Transmitter to become active?, Deployment of the antenna mechanically closes a battery switch., Immersion in water wets the electrolyte and activates the silver chloride/magnesium battery., Extension of the 60-foot lanyard pulls a firing pin that activates the battery., An overhead emergency-equipment stowage unit is empty and its door is moved away from the locked-open position toward closed. Why is this condition specifically hazardous?, Without the equipment load, the spring actuators can drive the door rapidly toward the closed position., Without the equipment load, the rate-control snubbers are mechanically disconnected., Without the equipment load, the latch cannot engage and the door rebounds repeatedly., An armed entry-door escape slide is deployed when the door is opened. What is the sequence that initiates inflation?, Door opening tensions the girt, allowing the slide pack to fall from the cover; tension on the inflation cable then opens the inflation valve, Door opening energises the slide battery, which electrically fires the inflation cylinder., The girt bar releases from the floor brackets and mechanically opens the aspirator before the slide pack leaves the compartment.

ATA 25

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