Acronyms and Abbreviations

Question 1

Threat avoidance is typically abbreviated:

Answer 1

THA

Question 2

ISA

Answer 2

International standard atmosphere

Question 3

AFD

Answer 3

The Airport/Facility Directory, now identified as Chart Supplement in the U.S., is a pilot’s manual that provides comprehensive information on airports, large and small, and other aviation facilities and procedures.

Question 4

ARTCC

Answer 4

“Air Route Traffic Control Center.” These facilities provide air traffic control service to aircraft operating on IFR flight plans within controlled airspace, principally during the enroute phase of flight

Question 5

ATS

Answer 5

Air traffic service is a service which regulates and assists aircraft in real-time to ensure their safe operations

Question 6

IMC

Answer 6

Instrument meteorological conditions is an aviation flight category that describes weather conditions that require pilots to fly primarily by reference to instruments, and therefore under IFR .

Question 7

ODP

Answer 7

Obstacle Departure Procedure is a type of procedure designed to ensure aircraft can safely depart an airport under instrument flight rules (IFR) and avoid obstacles in the immediate vicinity. ODPs are published on aeronautical charts.

Question 8

VHF

Answer 8

Very High Frequency

Question 9

XPDR

Answer 9

A transponder (XPDR) is a receiver/transmitter which will generate a reply signal upon proper interrogation; the interrogation and reply being on different frequencies.

Question 10

VOR

Answer 10

Very High Frequency Omnidirectional Range Station (VOR) is a type of short-range radio navigation system for aircraft, enabling aircraft with a receiving unit to determine its position and stay on course by receiving radio signals transmitted by a network of fixed ground radio beacons.