CPL Performance (CFPA)

Commercial Pilot Licence flight performance and planning practice tests.

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Within normal variations, does temperature or atmospheric pressure have more influence on density altitude?

Impossible to say

Atmospheric pressure

Temperature

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What must the pilot know for an accurate determination of both fuel and weight?

IAS

Density height

CAS

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A pilot departs an aerodrome with the following:

5200 ft density height, climb speed will initially be VTOSS, gross weight is 2500 kg, headwind 20 kt.

Employing your flight calculator, calculate as accurately as possible, what VSI will confirm minimum legal climb gradient is attained?

498 ft / min

562 ft / min

584 ft / min

462 ft / min

VTOSS = 90 kt IAS
At 5200 ft density height: 90 kt IAS = 97 kt TAS

Groundspeed = TAS − Headwind
            = 97 − 20
            = 77 kt GS

Minimum climb gradient = 6%
ROC = Gradient × GS
    = 6 × 77
    = 462 ft/min

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If you have a CPL license and you wish to take passengers on a charter flight in a turbine aircraft, how many hours as PIC on that aircraft type must you have before you can take passengers?

10 hours

30 hours

Nil

5 hours

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