Abbreviations and definitions Flashcards

1
Q

VASI

A

Visual approach slope indicator

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2
Q

PAPI

A

Precision approach path indicator

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3
Q

Inclinometer…..

A

the ball in the turn coordinator, indicates yaw

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4
Q

Precession….

A

tendency of a gyro to cause instrument errors due to drift

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5
Q

Yaw string….

A

string over windshield that should be straight back during coordinated turn

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6
Q

Magnetic declination….

A

points across the earth’s surface connected by isogonic lines, where poles align

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7
Q

IAS

A

indicated air speed, which is the speed read directly off the air speed indicator

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8
Q

CAS

A

calibrated air speed, which is IAS corrected for installation and instrument errors

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9
Q

TAS

A

is CAS corrected for altitude and non-standard temperature

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10
Q

GS

A

ground speed, is TAS adjusted for wind (GS decreased into a headwind, increased in tailwind)

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11
Q

Balanced turns is when _______

A

horizontal life = centrifugal force

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12
Q

Glide ration is ______

A

distance traveled horizontally vs. vertically

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13
Q

Spacial disorientation is ____________

A

when motions, forces, visual scenes encountered in flight lead to misleading information being sent to brain.

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14
Q

Condensation nuclei

A

salt, dust, or microscopic particles that condensation uses to start cloud formation

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15
Q

Air mass source region

A

Area over which air mass acquires its identifying distribution of temperature and moisture.

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16
Q

Ridge

A

elongated area of high pressure

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17
Q

trough

A

elongated area of low pressure

18
Q

Cumulus means

A

heaped or piled

19
Q

Stratus means

A

forms layers

20
Q

cirrus means

A

clouds >20,000 feet, usually fibrous looking

21
Q

Castellanus means

A

clouds with common base height but different vertical (looks like castle)

22
Q

Lenticular clouds are

A

lens shaped, often formed over mountains with strong winds

23
Q

Nimbus means

A

rain bearing

24
Q

Fracto means

A

broken

25
Q

Alto means

A

clouds between ~5000 and 20,000 feet

26
Q

Azimuth means

A

an angular measurement in a spherical coordinate system

27
Q

Complex aircraft

A

A complex airplane is defined by the United States Federal Aviation Administration as an aircraft that has all of the following: A retractable landing gear (land aircraft only; a seaplane is not required to have this) A controllable pitch propeller (which includes constant speed propellers) Movable or adjustable flaps.

28
Q

AWOS

A

Automated weather observing system

29
Q

ASOS

A

Automated surface observing system

30
Q

SIGMET

A

Significant meteorological information

31
Q

AIRMET

A

Airmen’s meteorological information

32
Q

AFSS

A

Automated flight service station

33
Q

DUATS

A

Direct user access terminal service

34
Q

EFAS

A

En route flight advisory service (AKA Flight Watch)

35
Q

HIWAS

A

Hazardous inflight weather advisory

36
Q

EFIS

A

Electronic flight instrument system

37
Q

FMS

A

Flight management system

38
Q

PFD

A

Primary flight display

39
Q

MFD

A

Multi-functional display

40
Q

ASRS

A

Aviation safety reporting system