Airframe

Front 1

What are the two types of glue used for aircraft wood structure repair?

Back 1

Casein and Synthetic resin glue, they are resorcinol formaldehyde type glues.

Front 2

What are the results of using insufficient gluing pressure when making a wood joint?

Back 2

The results will normally be thick glue lines, which indicate a weak joint.

Front 3

Why does the strength of a scarf joint depend upon the accuracy of the two beveled surfaces?

Back 3

Because an inaccurate bevel will reduce the amount of effective glue area.

Front 4

What area of the wood spar may not be spliced?

Back 4

It may not be spliced under wing attachments, landing gear fittings, engine mount fittings or lift-and-interplane strut fittings.

Front 5

What is a scarf joint?

Back 5

A method of joining two pieces of wood end to end, used in splicing structural members in an aircraft.

Front 6

What determines the required quality and strength of the fabric that is to be used for covering aircraft?

Back 6

The pounds per square foot loading and the never-exceed airspeed of the aircraft.

Front 7

When are anti-tear strips recommended and where are they used?

Back 7

Aircraft with never-exceed speeds in excess of 250mph. Installed over the ribs under the reinforcing tape. They are recommended for the complete upper surface of the wings and on the bottom surface of that part of the wing that is in the slipstream.

Front 8

What is the maximum permissible deterioration of aircraft fabric before it's considered unworthy?

Back 8

Fabric covering is considered unworthy when it deteriorates more than 30% from it's originally required tensile strength.

Front 9

What should be the strength of the fabric used for re-covering an aircraft?

Back 9

Anything used to re-cover should be high-grade aircraft material of no less than the strength of the original aircraft covering.

Front 10

What is the purpose, location, and method of installing drain grommets in aircraft fabric?

Back 10

The underside of the airfoils, at the trailing edge as close to the rib as practical, and at the lowest point along the center of the underside of each fuselage bay. They are installed to drain condensed moisture and vent the airfoil. Brass are mounted on fabric patches and plastic grommets are doped directly into the fabric.

Front 11

What is the purpose of reinforcing tape?

Back 11

Over ribs between the fabrics covering the rib stitching to prevent the stitching cord from cutting through the fabric.

Front 12

What type of machine-sewed seams are used in aircraft covering?

Back 12

Plain overlap, Folded-fell, and French-fell

Front 13

What is the standard tie-off knot used during rib stitching?

Back 13

A modified seine knot is used on all but the starting stitch.

Front 14

When is surface tape used?

Back 14

Sewed seams, lapped edges, rib stitching and screws must be covered with pinked-edge surface tape.

Front 15

What type of test can be performed to identify existing paint finishes?

Back 15

Apply oil to a small area. Nitrocellulose will soften in a few minutes, but acrylic and epoxy will show no effects. If not identified wipe down a small area with MEK. Acrylic will be affected but not epoxy.

Front 16

What causes blushing when applying dope or lacquer and how can it be prevented?

Back 16

Humidity, a heated room or blush retarding thinner can increase drying time.

Front 17

What are the three kinds of dope used when finishing aircraft fabrics?

Back 17

Clear, pigmented, and semi-pigmented dope.

Front 18

what causes an "orange peel" or "pebble" finish?

Back 18

An incorrect spray gun setting, incorrect air pressure setting, incorrect paint viscosity or holding the gun too far from the work.

Front 19

What is used to thin chromate primer?

Back 19

Toluene.

Front 20

Which federal regulation prescribes the size and location requirements for aircraft identification numbers?

Back 20

FAR part 45: Identification and Registration Marking.

Front 21

Where are special rivets, such as Huck or Cherry Lock rivets used?

Back 21

They are used in places where access to both sides of the rivet structure is impossible or where limited space will not permit the use of a bucking bar.

Front 22

What types of materials are used in honeycomb construction?

Back 22

Stainless steel, titanium, magnesium, plywood, resin-impregnated paper, glass, nylon or cotton cloth in various combinations.

Front 23

What is a joggle?

Back 23

An offset formed on an angle strip to allow clearance for a sheet or extrusion.

Front 24

Briefly describe anodizing.

Back 24

Aluminum alloy is dipped in electrolyte, which causes a thin film of hydroxide to form on the surface. This coating provides resistance to corrosion and a good bond for paint.

Front 25

What are the acceptable repair methods for a bonded honeycomb structure?

Back 25

The potted method (used on core materials) and laminated glass fabric overlay (used on damaged skin).

Front 26

What are the procedures for preparing a metal fuel tank for welding?

Back 26

1) Wash the inside of the tank

2) Steam for at least 30 minutes

3) Fill tank with CO2 gas and seal tank providing a vent hole.

Front 27

What needs to be done to prepare an aircraft for an Annual or 100 hour inspection?

Back 27

The aircraft and the engine should be thoroughly cleaned, then remove or open all inspection plates, access doors fairings and cowling.

Front 28

Who can sign off and approve annual inspection?

Back 28

An A&P mechanic who holds an Inspection Authorization license.

Front 29

Who has the authority to sign off and return to service an aircraft with a 100 Hour inspection?

Back 29

A certified A&P Mechanic.

Front 30

After a Progressive Inspection has been performed who can approve an aircraft for return to service?

Back 30

A certified mechanic holding an Inspection Authorization License, the aircraft manufacturer, or a certified repair station.

Front 31

When should landing gear retraction be accomplished?

Back 31

During an inspection, after removing/replacing landing gear components, and after a hard landing.

Front 32

Where would you look to find proper tire inflation information?

Back 32

Aircraft Operation Manual, or Maintenance Manual.

Front 33

What are two methods of bleeding brakes?

Back 33

Gravity and pressure method.

Front 34

What do you watch for when disassembling an Oleo strut?

Back 34

Pressure discharge.

Front 35

What are the three types of hydraulic fluid currently being used in civil aircraft?

Back 35

Vegetable based (blue), Mineral based (red) aka 5606, and phosphate ester based (purple) aka Skydrol 500.

Front 36

What will happen to the seals in a vegetable based hydraulic system if it is serviced with mineral or phosphate ester based fluid?

Back 36

The seals with break down and block the system.

Front 37

What happens to the hydraulic fluid flow if the filter element becomes clogged?

Back 37

The bypass is activated, routing the fluid from the inlet port to the outlet port.

Front 38

What methods are used to pressurize hydraulic reservoirs?

Back 38

Directly from aircraft cabin pressurization system, from the engine compressor in turbine powered aircraft, or aspirator or venturi-tee.

Front 39

What are pneumatic systems used for in aircraft?

Back 39

brake operation, opening and closing doors, starting, pump driving and operating emergency devices.

Front 40

What control changes the position of the outflow valve?

Back 40

The pressurization controller.

Front 41

What are two groups of independent cabin pressures?

Back 41

Positive Displacement compressors and Centrifugal compressors.

Front 42

What is the function of ventilating air in a combustion heater?

Back 42

To carry the heat in places where it is needed.

Front 43

What are the sources for ventilating air?

Back 43

A blower for air circulation and heater operation on the ground and a ram-air inlet or the cabin compressors on pressurized aircraft.

Front 44

What must be done if an oxygen system has been depleted or moisture has been detected and not recharged within two hours?

Back 44

It must be purged with dry nitrogen or dry air and oxygen.

Front 45

How is a high pressure oxygen cylinder identified?

Back 45

(1800-1850 psi) colored green with the words "Aviators Breathing Oxygen" stenciled in one inch white letters.

Front 46

How is a low pressure oxygen cylinder identified?

Back 46

(400-425 psi) colored light yellow.

Front 47

Name the basic components of a communication system.

Back 47

Microphone, transmitter, transmitting antenna, receiving antenna, receiver, and a headset or loudspeaker.

Front 48

What is the most common communication system?

Back 48

VHF (Very High Frequency)

Front 49

What is a transceiver?

Back 49

A self-contained transmitter and receiver that share the same power supply, antenna, and tuning.

Front 50

What are the basic components of an autopilot system?

Back 50

Gyros, servos, and amplifier.

Front 51

What are the output elements of an autopilot system?

Back 51

The servos, which actuate the control surfaces.

Front 52

What is the purpose of a bonding jumper on a radio shock mount?

Back 52

To provide a low-impedance ground return and minimize radio interference from static electricity.

Front 53

What is the frequency of an Emergency Locator Transmitter (ELT)?

Back 53

There are two, 121.5 Mhz (pre 2009) and 406.3 Mhz (current frequency).

Front 54

How can you determine when the batteries of an ELT should be replaced , even though the set opperates?

Back 54

The battery replacement date must be marked on the outside of the transmitter.

Front 55

Where is the preferred location for mounting a VOR antenna on a small aircraft?

Back 55

On top of the forward part of the cabin with the apex of the vee toward the front.

Front 56

Where should the Distance Measuring Equipment (DME) antennas be located?

Back 56

They shout be mounted on the lower surface of the aircraft in a position that will not be blanketed by the wings when the aircraft is being banked.

Front 57

What is an ADF?

Back 57

Automatic Direction Finder.

Front 58

What are two types of fuel cells?

Back 58

Bladder-type and integral.

Front 59

What are the advantages of a single point pressure fueling system?

Back 59

Reduces the time required to service, eliminates aircraft skin damage from fuel nozzles and hoses, and reduces the chance of fuel contamination.

Front 60

What is the purpose of warning lights in connection with a fuel systems?

Back 60

They are used to indicate when the fuel pressure is too low, or to indicate when the fuel quantity in a tank is below a certain amount.

Front 61

What are the four general types of fuel quantity gauges?

Back 61

Sight glass, mechanical, electrical, and electronic.

Front 62

What is a cross-feed system?

Back 62

An interconnected fuel system designed so that fuel can be fed from various tanks to any engine.

Front 63

How can a fuel tank be checked for leaks after a repair?

Back 63

By a bubble check using air pressure not over 1/2 psi and liquid soap or bubble solution to identify the leak.

Front 64

What tool is used to measure the size of unmarked electrical wire?

Back 64

A wire gauge can be used to measure wires ranging in size from 0-36.

Front 65

What size of conduit should be used for a specific cable bundle?

Back 65

The conduit should be 25% larger than the wire bundle.

Front 66

When do DC motors draw several times their rated current?

Back 66

During starting.

Front 67

What would cause an AC electric motor to run slow?

Back 67

Low applied voltage, defective wiring or no lubrication.

Front 68

What should be checked before any aircraft electrical load is increased?

Back 68

The aircraft electrical systems should be checked to ensure that the new load will not exceed the rated limits of these units.

Front 69

How long should bonding jumpers be made?

Back 69

As short as possible.

Front 70

What is the purpose of an anti-skid system?

Back 70

To permit effective braking throughout the landing and taxi roll, usually active at speeds above 20 mph.

Front 71

What does an anti-skid warning light indicate?

Back 71

It indicates that the system is turned off or there is a system failure.

Front 72

What type of warning devices are usually provided for retractable landing gear?

Back 72

A red light or aural device.

Front 73

When does the aural device operate in a landing gear warning system?

Back 73

When the throttle is retarded and the landing gear is in any position other than down and locked.

Front 74

Which positions of retractable landing gear normally have a position indicator?

Back 74

The up and locked position and down and locked position.

Front 75

When should you check the landing gear switches, lights, warning horn, or buzzers for proper operation?

Back 75

During any landing gear retraction checks.

Front 76

How does a takeoff warning horn differ from a landing gear warning horn?

Back 76

The takeoff horn is intermittent and the landing gear warning is continuous.

Front 77

What are the two methods of inflating pneumatic deicer boots?

Back 77

Pressurized air is provided by an engine driven air pump (vacuum pump) or by bleed air from a turbine engine compressor.

Front 78

What methods are used to supply heated air for thermal anti-icing systems?

Back 78

Bleed air from the turbine engine compressor, engine exhaust heat exchanges and ram air heated by a combustion heater.

Front 79

What problems are associated with electrically heated windshields?

Back 79

Delamination, arcing, scratches, discoloration.

Front 80

What type of power is used to operate windshield wiper systems?

Back 80

Electrical or hydraulic power.

Front 81

What are common problems encountered with windshield wipers?

Back 81

One problem is the slipstream aerodynamic force reduces wiper blade pressure, another is achieving fast enough wiper oscillation.

Front 82

What color does a CO detector change to when carbon monoxide fumes are present?

Back 82

Green, grey, or black dependent upon the type used. The yellow silica is impregnated with a silico-molybdate compound that changes color when it comes in contact with CO.

Front 83

What are two types of smoke detectors?

Back 83

Photoelectric and visual.

Front 84

Where are the smoke detectors located?

Back 84

Cargo and baggage compartments, and lavatories.

Front 85

Describe the operating principal of a continuous loop fire detection system.

Back 85

The system consists of one or more wires imbedded in a ceramic core within an inconel tube. A fire is detected the core resistance drops and current flows between the signal wire and ground, energizing the system.

Front 86

Describe the operating principal of a thermal switch fire detection system.

Back 86

Heat sensitive switches complete a circuit when a certain temperature is reached, one or more lights connected in series with the switches are energized and illuminate to warn the pilot of an over-temperature condition/possible fire/

Front 87

What are two types of fire extinguishing systems?

Back 87

High rate of discharge (HRD) and the conventional systems.

Front 88

What type of extinguishing agent is usually found in an HRD system?

Back 88

Halogenated hydrocarbons (Halons), sometimes boosted by high pressure dry nitrogen.

Front 89

What is the purpose of the yellow disk in a CO2 fire extinguishing system?

Back 89

To indicate which bank of bottles has been discharged.

Front 90

In a turbine engine freon fire extinguishing system, how are the bottles discharged?

Back 90

By an explosive discharge cartridge (Squib) which is detonated electrically.

Front 91

What type of hand held fire extinguishers are available for extinguishing interior aircraft fires?

Back 91

Water, CO2, and dry chemical.

Front 92

What type of fire detection system gives a more complete coverage of a fire hazard?

Back 92

A continuous-loop detector system.