2A656 Practice Test

Listed below are sample questions for 2A656 from our database. Register now to start taking tests for this AFSC! We have 373 questions currently in the database for this category.

The version of this CDC we have in the database is 2A656 01 1210, 1212, 1302, Edit Code 04

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  • 1 . One purpose of the fan in the aircraft bleed air system cooling turbine and fan assembly is to prevent
    turbine over speeding.
  • 2 . For aircraft pressurization systems to operate properly, you should note that as the aircraft pressurizes, the outflow safety valve opens at the same time once the
    pneumatic relay opens.
  • 3 . While troubleshooting an inoperative taxi light in the aircraft lighting system, if you find 28-volts alternating current (VAC) on terminal A2 of the taxi light relay your next checkpoint would usually be at the
    lamp terminals to ground
  • 4 . The flow control valve control in the bleed air air-conditioning system controls flow by maintaining a constant differential pressure between the
    inlet and throat of the venturi.
  • 5 . What controls the flow of the current carriers in a transistor?
    Base.
  • 6 . All of these aircraft systems use engine bleed air except
    fire extinguishing.
  • 7 . How many gallons of liquid coolant should initially be pumped into the aircraft liquid coolant system with the radar shunt hose installed?
  • 8 . You should check this component first if one outflow safety valve opens fully when the aircraft starts to pressurize.
    Pneumatic relay.
  • 9 . What is the minimum personal protective equipment (PPE) you are required to wear when performing routine sealed lead-acid batteries (SLAB) maintenance?
    Safety toe boots only.
  • 10 . Prior to removing any connector plug in the nose wheel steering system, you must
    disconnect the power