Type training · Boeing 737 Classic B1.1 · ATA 49
Boeing 737 Classic B1.1: APS 2000 APU (ATA 49)Type training questions & answers
The APS 2000 APU with FADEC: inlet door, fuel and start sequence, bleed and cooling air, oil and fault display.
- A worked explanation on every question
- Written for the 737-300/400/500 with CFM56-3 engines
- Read in English or 15 other languages
Sample APS 2000 APU questions with answers
Three questions from the free preview. Think of your answer first, then open the explanation.
1.Which units control the APS 2000 APU on the 737 Classic?
- A.APU control unit and FADEC
- B.An ECB in the tail cone only
- C.The engine EECs and the GCU
Show answer and explanation
Correct answer: A. APU control unit and FADEC
The APS 2000 is controlled by the APU control unit on shelf E3-3 and a FADEC in the aft cargo compartment. Ref 737-300/400/500 AMM 49-00-00 (APS 2000).
2.Where is the FADEC of the 737 Classic APS 2000 installed?
- A.APU compartment firewall
- B.Aft cargo compartment
- C.E3-3 shelf in the E/E bay
Show answer and explanation
Correct answer: B. Aft cargo compartment
The APU control unit is on the E3-3 shelf; the FADEC is in the aft cargo compartment. Ref 737-300/400/500 AMM 49-00-00 (APS 2000).
3.Must the APS 2000 be removed from a 737 Classic for power plant maintenance?
- A.Only the gearbox may stay installed
- B.No, cowl open, lower shroud off
- C.Yes, it must always be removed first
Show answer and explanation
Correct answer: B. No, cowl open, lower shroud off
The APU stays in place; open the cowl door and remove the lower shroud. Lowering it to a stand helps generator removal. Ref 737-300/400/500 AMM 49-10-00 (APS 2000).
Part of the Boeing 737 Classic B1.1 type course
One chapter of the Boeing 737 Classic B1.1 type course question bank, for the 737-300/400/500 with CFM56-3 engines, written in our own words for revision. Your type course and the aircraft maintenance manual stay the authority: limits and procedures can differ between airframes and operators.
All Boeing 737 Classic B1.1 chapters →