U

Question 1

Ultra-high frequency (UHF)

Answer 1

The range of electromagnetic frequencies between 962 MHz and 1213 MHz.

Question 2

Ultimate load factor

Answer 2

In stress analysis, the load that causes
physical breakdown in an aircraft or aircraft component during
a strength test, or the load that according to computations,
should cause such a breakdown.

Question 3

Uncaging

Answer 3

Unlocking the gimbals of a gyroscopic instrument,
making it susceptible to damage by abrupt flight maneuvers
or rough handling.

Question 4

Uncontrolled airspace

Answer 4

Class G airspace that has not been
designated as Class A, B, C, D, or E. It is airspace in which
air traffic control has no authority or responsibility to control
air traffic; however, pilots should remember there are VFR
minimums which apply to this airspace.

Question 5

Underpower

Answer 5

Using less power than required for the purpose of achieving a faster rate of airspeed change.

Question 6

United States Terminal Procedures Publication (TPP)

Answer 6

Booklets published in regional format by the NACO that
include DPs, STARs, IAPs, and other information pertinent
to IFR flight.

Question 7

Unusual attitude

Answer 7

An unintentional, unanticipated, or extreme aircraft attitude.

Question 8

Useful load

Answer 8

The weight of the pilot, copilot, passengers,
baggage, usable fuel, and drainable oil. It is the basic empty
weight subtracted from the maximum allowable gross weight.
This term applies to general aviation aircraft only.

Question 9

User-defined waypoints

Answer 9

Waypoint location and other data
which may be input by the user, this is the only GPS database
information that may be altered (edited) by the user.