Final Exam Terms

Question 1

Airplane

Answer 1

Means an engine-driven fixed-wing aircraft heavier than air, that is supported in flight by the dynamic reaction of the air against its wings.

Question 2

Aircraft

Answer 2

Means a device that is used or intended to be used for flight in the air.

Question 3

Time in service

Answer 3

With respect to maintenance time records, means the time from the moment an aircraft leaves the surface of the earth until it touches it at
the next point of landing.

Question 4

Wing Dihedral

Answer 4

Dihedral is the upward angle of the wings (or tail surface) from a
horizontal axis. Dihedral makes aircraft more laterally stable, which means theyare more stable when they roll left or right.

Question 5

AOA: Angle of Attack

Answer 5

The angle at which the chord of an aircraft’s wing meets the relative wind. The chord is a straight line from the leading edge to the trailing edge.

Question 6

AOl

Answer 6

The angle formed by the chord line of the wing and a line parallel to the
longitudinal axis of the airplane.

Question 7

Mach Number

Answer 7

Means the ratio of true airspeed to the speed of sound.

Question 8

AD: Means Airworthiness Directive

Answer 8

Legally enforceable rules issued by
the FAA in accordance with 14 CFR part 39 to correct an unsafe condition in a product. 14 CFR part 39 defines a product as an aircraft, aircraft engine,
propeller, or appliance.

Question 9

TSO: Means Technical Standard Order

Answer 9

is a minimum performance standard for specified materials, parts, and appliances used on civil aircraft. When authorized to manufacture a material, part, or appliances to a TO standard, this is referred to as TSO authorization. Receiving a TSO authorization is both design and production approval.

Question 10

PMA

Answer 10

means parts manufacturer approval.

Question 11

AC: Advisory Circulars

Answer 11

The FAA issues Advisory Circulars (AC) to inform the aviation public in a systematic way of nonregulatory material

Question 12

Major Repair: means a repair thaaaat…

Answer 12

(1) That, if improperly done, might appreciably affect weight, balance, structural strength, performance, powerplant operation, flight characteristics, or other qualities affecting airworthiness; Or
(2) That is not done according to accepted practices or cannot be done by elementary operations.

Question 13

Minor Repair

Answer 13

means a repair other than a major repair.

Question 14

Major Alteration: means an alteration not listed in the aircraft, aircraft engine, or propeller specifications thaaat…

Answer 14

(1) That might appreciably affect weight, balance, structural strength,
performance, powerplant operation, flight characteristics, or other qualities affecting airworthiness; orrrr
(2) That is not done according to accepted practices or cannot be done by elementary operations.

Question 15

Minor Alteration

Answer 15

means an alteration other than a major alteration.

Question 16

APU: Auxiliary Power Unit

Answer 16

allows an aircraft to operate autonomously without reliance on ground support equipment such as a ground power unit, an external air-conditioning unit or a high-pressure air start cart.

Question 17

GPU: Ground Power Unit

Answer 17

A Ground Power Unit (CPU) can be either a fixed or mobile unit which can be connected to the electrical system of an aircraft while on the ground to provide either 120V AC or 28V DC power. Ground power units usually consist of a generator powered by a diesel engine but may found in other configurations.