Tech info Flybe Q400 Flashcards
How many emergency exits are there?
There are 5 Emergency Exits – including the Emergency Escape Hatch.
How many doors have pressurised seals?
Only two Doors have pressurised seals - the Main Passenger Door and the Rear Baggage
Does the Q400 have escape slides?
The Q400 doorsills are at the maximum height allowed without Escape Slides being fitted.
What doors have ditching dams fitted to them?
Ditching Dams are fitted to the two Forward Exits only.
How many batteries and what type?
3 x Nicad batteries
How many TRU’s are there?
2
What are the purposes of the 3 batteries?
1 main, 1 aux and 1 standby
What are the following specs of the batteries?
Main / Aux / Standby: Voltage and AH
Main / Aux: 24V 40AH
Standby: 24V 17AH
What is an EPCU?
Electrical Power Control Unit (EPCU) accounts for individual power source or bus failures by the automatic opening and closing of Bus Tie Contacts.
What voltage do the TRU’s supply?
28V DC
What voltage do the generators supply?
115V AC
What services is on the hot battery busbar?
- Fire Extinguisher Squibs
- External Refuelling Panel and associated Shut-off Valves
- Hydraulic / Fuel Shut-off Valves
- Boarding Lights
- Flight Deck Emergency Dome Light
- Clock
- PA – (when activated by the Emergency Light Switch)
What is the purpose of condition levers? (2)
First is as a fuel shut off.
Second they control propeller RPM.
There are 5 positions for the CL’s:
- Fuel off
- Start/feather
- 850rpm
- 900rpm
- 1020rpm
How long do the liminous strips stay lit for and how long does the cabin stay lit for in an emergency?
Floor-level guidance is provided by luminous strips, which stay bright for 20 minutes following 20 minutes of cabin light illumination.
What is the maximum theoretical fuel load?
The Maximum theoretical useable fuel load is 5,318 kg. Practically - due to the limitations of pressure refuelling, approx. 5200kg is more likely.
What is the maximum fuel imbalance limit?
272 kg
Can it be fuelled over wing if pressure refuelling is not available?
Yes.
What refuelling pressures are required for refuelling?
Refuelling Pressures 20 - 50 PSI
What engines does this aircraft have?
Pratt & Whitney PW150A turboprop engines

Propellor facts:
- Number of blades?
- Constant speed?
- Variable pitch?
- Manufacturer and model number?
- six bladed
- constant speed
- variable pitch
- fully feathering Dowty R408 propeller
How much shaft horse power from each engine?
The powerplant develops 4,580 Shaft Horse Power (SHP) under normal takeoff conditions. An automatic uptrim allows either engine, to develop a maximum takeoff power of 5071 SHP, for a brief period of time, if an engine failure occurs during takeoff.
How is propeller RPM, manual propeller feathering, and fuel on/off control for engine start and shutdown controlled?
Condition levers
Does the Pratt and Whitney PW150A engines have FADEC?
Yes
How many shafts does the PW150A engine have?
3
- A Low Pressure Axial Compressor and Low Pressure Turbine mounted on the middle shaft.
- A High Pressure Centrifugal Compressor and High Pressure Turbine mounted on the outer shaft.
- A Power Turbine mounted on the inner shaft that extends forward to drive the reduction gearbox.



























