Learjet 20 Series Pilot Training Manual page 111

9. Motive-flow fuel for the jet pumps is
supplied by the:
A. Engine-driven fuel pumps
B. Wing standby pumps
C. Fuselage transfer pump
D. Motive-flow control unit
10. The amber FUEL FILTER light indicates:
A. Low fuel pressure to the engine-
driven pump; the standby pumps
should be turned on
B. That both fuel filters are bypassing
fuel; the light does not illuminate if
only one filter is bypassing
C. That one or both fuel filters are by-
passing fuel
D. That only the secondary fuel filters
are being bypassed
11. When actuated, the wing fuel pressure
switch turns:
A. Off the fuselage transfer pump
B. On the fuselage transfer pump
C. Off the wing standby pumps
D. On the wing standby pumps
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LEARJET 20 SERIES PILOT TRAINING MANUAL
FOR TRAINING PURPOSES ONLY
12. When using any aviation gasoline in
the fuel mixture, operation is limited to
the following:
A. Do not take off with the fuel tem-
perature lower than –54ºC (–65ºF).
B. Restrict flights to below 15,000 feet.
C. Both main jet pump switches and
both wing standby pump switches
must be on and the pumps must be
operating.
D. All the above
13. The Learjet 20 series requires anti-icing
additive:
A. At all times
B. Only when temperatures of –37ºC
and below are forecast
C. Only for flights above 15,000 feet
D. Only for flights above FL 290
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