Free FAA Aircraft Dispatcher Practice Test

In a TAF, a TEMPO group describes conditions expected to:

• A. occur exactly once during the period indicated.
• B. last less than an hour at a time and cover less than half of the period indicated. ✓
• C. become the prevailing conditions for the remainder of the forecast.
• D. apply only between sunset and sunrise.

TEMPO means temporary fluctuations: generally less than an hour at a time and, in the aggregate, less than half the TEMPO period. A lasting change of prevailing conditions is carried by FM or BECMG groups instead.

Reference: AC 00-45H

For a two-engine transport airplane, the second segment of the takeoff flight path begins at gear retraction and requires a minimum climb gradient of:

• A. 3.0 percent with all engines operating.
• B. 1.2 percent with one engine inoperative.
• C. 5.0 percent with one engine inoperative.
• D. 2.4 percent with one engine inoperative. ✓

Second segment, gear up, takeoff flaps, V2, one engine out, demands 2.4% for two-engine airplanes (2.7% for three, 3.0% for four). It is very often the limiting segment on hot days and at high elevations.

Reference: 14 CFR 25.121(b)

A Convective SIGMET is issued for:

• A. isolated air-mass thunderstorms of any intensity.
• B. forecast thunderstorms more than 12 hours in the future.
• C. any cumulonimbus cloud reported by a pilot.
• D. embedded thunderstorms, a line of thunderstorms, or thunderstorms producing hail of 3/4 inch or greater or tornadoes. ✓

Convective SIGMET criteria include embedded storms, lines, significant areas of strong storms, tornadoes, and large hail, and any convective SIGMET implies severe or greater turbulence, severe icing, and low-level wind shear without stating them.

Reference: AIM 7-1-6

During a domestic part 121 flight, the aircraft dispatcher is responsible for:

• A. obtaining all en route ATC clearances for the crew.
• B. navigating the aircraft from the ground.
• C. monitoring the progress of the flight and issuing information necessary for its safety. ✓
• D. computing the landing performance for each approach.

Under 121.533(b) the dispatcher monitors each flight's progress, issues necessary safety information, and cancels or redispatches a flight that cannot operate or continue as planned. Flying and ATC communication remain the crew's job.

Reference: 14 CFR 121.533(b)

The runways at the destination are forecast to be wet at the ETA. A turbojet airplane may be dispatched only if the effective runway length is at least:

• A. the same length required for a dry runway.
• B. 115 percent of the runway length required for a dry runway. ✓
• C. 130 percent of the runway length required for a dry runway.
• D. 150 percent of the runway length required for a dry runway.

121.195(d) adds 15% on top of the dry-runway (60% rule) requirement when the runway is forecast wet or slippery at the ETA, unless the AFM provides approved wet-runway data showing otherwise.

Reference: 14 CFR 121.195(d)