F. Hydraulic and Pneumatic Systems Exam
Questions And Answers
What kind of filter is a micronic filter? (AM.II.F.K1) - - -
correct answer ✅A filter with a special paper element.
What is a double-action pump? (AM.II.F.K1) - - -
correct answer ✅A pump that delivers fluid with the movement of
the pump handle in both directions.
Why do most engine-driven hydraulic pumps have a shear section
in their drive couplings? (AM.II.F.K1) - - -
correct answer ✅If the pump should seize, the shear section will
break, disconnecting the pump from the engine and preventing
further damage.
What are the two basic types of hydraulic fluid used in modern
aircraft? (AM.II.F.K1) - - -
correct answer ✅Mineral base fluid and phosphate ester base
fluid.
Does the main hydraulic pump take its fluid from the bottom of the
reservoir, or from a standpipe? (AM.II.F.K1) - - -
correct answer ✅The main pump normally takes its fluid from a
standpipe, while the emergency pump takes its fluid from the
bottom of the reservoir. If a break in the system should allow the
, F. Hydraulic and Pneumatic Systems Exam
Questions And Answers
main pump to pump all of its fluid overboard, there will still be
enough fluid in the reservoir to allow the emergency system to
extend the landing gear and actuate the brakes.
Why are some hydraulic reservoirs pressurized? (AM.II.F.K1) - - -
correct answer ✅Pressurization ensures that fluid will be supplied
to the inlet of the pumps at high altitude where there is not enough
atmospheric pressure to do this.
What are two ways aircraft hydraulic reservoirs may be
pressurized? (AM.II.F.K1) - - -
correct answer ✅By an aspirator in the fluid return line or by bleed
air from one of the engine compressors.
What is used to flush a hydraulic system that uses Skydrol hydraulic
fluid? (AM.II.F.K1) - - -
correct answer ✅Trichlorethylene or the solvent recommended by
the aircraft manufacturer.
What is used to flush a hydraulic system that uses mineral base
hydraulic fluid? (AM.II.F.K1) - - -
correct answer ✅Naphtha, varsol, or Stoddard solvent.
Questions And Answers
What kind of filter is a micronic filter? (AM.II.F.K1) - - -
correct answer ✅A filter with a special paper element.
What is a double-action pump? (AM.II.F.K1) - - -
correct answer ✅A pump that delivers fluid with the movement of
the pump handle in both directions.
Why do most engine-driven hydraulic pumps have a shear section
in their drive couplings? (AM.II.F.K1) - - -
correct answer ✅If the pump should seize, the shear section will
break, disconnecting the pump from the engine and preventing
further damage.
What are the two basic types of hydraulic fluid used in modern
aircraft? (AM.II.F.K1) - - -
correct answer ✅Mineral base fluid and phosphate ester base
fluid.
Does the main hydraulic pump take its fluid from the bottom of the
reservoir, or from a standpipe? (AM.II.F.K1) - - -
correct answer ✅The main pump normally takes its fluid from a
standpipe, while the emergency pump takes its fluid from the
bottom of the reservoir. If a break in the system should allow the
, F. Hydraulic and Pneumatic Systems Exam
Questions And Answers
main pump to pump all of its fluid overboard, there will still be
enough fluid in the reservoir to allow the emergency system to
extend the landing gear and actuate the brakes.
Why are some hydraulic reservoirs pressurized? (AM.II.F.K1) - - -
correct answer ✅Pressurization ensures that fluid will be supplied
to the inlet of the pumps at high altitude where there is not enough
atmospheric pressure to do this.
What are two ways aircraft hydraulic reservoirs may be
pressurized? (AM.II.F.K1) - - -
correct answer ✅By an aspirator in the fluid return line or by bleed
air from one of the engine compressors.
What is used to flush a hydraulic system that uses Skydrol hydraulic
fluid? (AM.II.F.K1) - - -
correct answer ✅Trichlorethylene or the solvent recommended by
the aircraft manufacturer.
What is used to flush a hydraulic system that uses mineral base
hydraulic fluid? (AM.II.F.K1) - - -
correct answer ✅Naphtha, varsol, or Stoddard solvent.
