Aircraft General Knowledge Questions

In a semi-monocoque fuselage, what is the primary function of longerons?

What is the function of frames in a semi-monocoque structure?

A monocoque structure carries loads primarily through its:

What is the purpose of stringers in a semi-monocoque fuselage?

The wing spar primarily resists which type of load?

Fail-safe design philosophy means the structure:

Which are the three primary flight controls?

A balance tab moves:

What is the function of an anti-balance tab?

Differential ailerons are designed to:

A servo tab differs from a trim tab because it:

Mass balancing of a control surface is used to:

Spoilers on a transport aircraft can be used for:

What is a typical operating pressure for a large transport aircraft hydraulic system?

In a hydraulic system, an accumulator is used to:

A variable-displacement pump adjusts output by:

Why do large aircraft typically have multiple independent hydraulic systems?

A power transfer unit (PTU) in a hydraulic system:

What is the purpose of an oleo-pneumatic shock absorber?

An anti-skid braking system works by:

Autobrakes on a transport aircraft are typically armed:

Landing gear squat switches (weight-on-wheels sensors) are used to:

What prevents inadvertent gear retraction on the ground?

A fusible plug in an aircraft wheel is designed to:

In most jet transports, what is the primary source of pneumatic (bleed) air?

Engine bleed air is typically used for all of the following EXCEPT:

A precooler in the bleed air system is used to:

Cabin pressure is controlled primarily by:

Maximum cabin differential pressure on a typical airliner is approximately:

A negative pressure relief valve prevents:

The cabin altitude is:

In an air cycle machine (ACM) pack, the final cooling occurs in the:

A pack valve controls:

Fuel jettison systems are required when:

The purpose of fuel tank venting is to:

Fuel booster pumps in the tanks are used primarily to:

Cross-feed valves in a fuel system allow:

A fuel quantity indicating system (FQIS) typically uses what type of sensor?

Fuel tank inerting systems reduce explosion risk by:

On a typical twin-engine airliner, what generates the primary AC electrical power?

An IDG (Integrated Drive Generator) includes a:

Standard AC power frequency on most transport aircraft is:

A transformer-rectifier unit (TRU) converts:

The ram air turbine (RAT) is deployed when:

Aircraft batteries are typically which type?

A bus tie breaker (BTB) is used to:

Continuous-loop fire detection systems work by:

Engine fire extinguishing agents on modern aircraft are typically:

How many fire extinguisher bottles (shots) are typically available per engine?

Cargo compartment smoke detection typically uses:

Thermal anti-icing of wing leading edges on jet aircraft typically uses:

Pneumatic de-ice boots operate by:

Engine intake anti-icing is critical because ice ingestion can cause:

Pitot heat is normally:

Windshield rain removal on transport aircraft is achieved by:

Chemical oxygen generators in passenger drop-down masks produce oxygen by:

Flight crew oxygen masks on transport aircraft are typically:

At what cabin altitude must supplemental oxygen be provided to passengers?

Plug-type cabin doors on pressurized aircraft are designed so that:

Flight deck windshields are heated primarily to:

In a high-bypass turbofan engine, the majority of thrust is produced by:

What is the Brayton cycle?

EGT (Exhaust Gas Temperature) is monitored primarily to:

N1 on a turbofan engine refers to:

N2 on a turbofan engine refers to:

A FADEC (Full Authority Digital Engine Control) system:

Engine surge (compressor stall) is caused by:

Variable stator vanes in a compressor are used to:

Thrust reversers operate by:

What does a hung start indicate?

A hot start is indicated by:

The bypass ratio of a turbofan is the ratio of:

The APU (Auxiliary Power Unit) is typically used to:

At what altitude is APU bleed air use typically limited?

The APU is usually started using:

Hydraulic fluid types used in modern transport aircraft are typically:

A hydraulic fuse is designed to:

What is the purpose of a current transformer (CT) in an AC generation system?

Generator paralleling on a multi-engine aircraft requires matching of:

Fuel heating in aircraft is performed to:

Fatigue cracks in aircraft structures typically initiate at:

Damage tolerance design philosophy assumes:

During a normal climb, the cabin rate of climb is typically:

A rapid depressurization at FL350 requires:

A dual-loop fire detection system requires how many loops to trigger a fire warning?

A fly-by-wire (FBW) system replaces mechanical linkages with:

What is a yaw damper used for?

Tire creep marks on aircraft wheels indicate:

The purpose of a surge tank (overflow tank) in the fuel system is to:

The duration of a passenger chemical oxygen generator is typically:

Oil in a gas turbine engine is used for:

Ignition in a gas turbine engine is needed:

A static inverter converts:

High-pressure bleed air from engines must be regulated because:

An ice detector probe typically works by:

Composite materials are increasingly used in aircraft structures because they offer:

Emergency exit slides must be armed (set to automatic) before:

Elevator feel in a hydraulically powered system is provided by:

Nosewheel steering on transport aircraft is controlled by:

Recirculation fans in the cabin air system are used to: