Presentation on theme: "Cessna C500 Fuel System hello and welcome to my talk on the c500 fuel system."— Presentation transcript:
1 Cessna C500 Fuel Systemhello and welcome to my talk on the c500 fuel system
2 Main Fuel System Components 2 x ‘Wet Wing’ fuel tanks2 x electric fuel pumps2 x ejector fuel pumps2 x engine driven fuel pumpsCrossfeed system2 x Fuel Filters2 x Firewall shut off valves
3 Fuel System Limitations G-LOFT Fuel Capacity 3,806lbAnti-icing Additive to be used (Prist)Normal Fuel Used JET A1Min Fuel Temp. (takeoff) -29ºCMax Fuel Temp. +48ºCMax Altitude 41,000ftMax Fuel Imbalance 800lbs
4 AVGAS Limitations AVGAS is permitted under the following conditions Fuel temp. not to exceed 32º CMax OAT (takeoff) 32º CBoost Pumps are operatingHours are logged in engine logbookMax operating altitude 25,000ft
5 Fuel System Components In NORM Position Boost Pump will Operate Automatically:During Start CycleDuring CrossfeedWhen Low Fuel Pressure Is Sensed In Engine Supply LineTHREE POSN. BOOST PUMP SWITCHES
6 Fuel System Components In OFF Position Boost Pump will Operate Automatically:During Start CycleDuring CrossfeedIn ON Position Boost Pump Will Operate ContinuouslyTHREE POSN. BOOST PUMP SWITCHES
7 Fuel System Components CROSSFEED SELECTOR SWITCH
8 Fuel System Components FUEL QTY andFUEL FLOW Indicators
9 Ejector pump Operation OUTPUTFASTERMOTIVE FLOWLOW PRESSURESUCTIONFUEL TANK
21 1 Concerning the fuel system, the correct statement is: A. The FUEL BOOST pump switches have to be on for engine start.B. With the FUEL BOOST pump switches off, the respective boost pump will automatically be energized whenever the respective START button is depressed, or when crossfeed from that tank is selected.C. It is normal for both fuel boost pumps to operate during crossfeed operation.D. The fuel boost pump will be automatically energized anytime the IGNITION switches are in NORM.
22 2 After engine start, the fuel boost pump is de-energized by: A. The FUEL BOOST pump switchB. Start circuit terminationC. Discontinuing crossfeedD. A time-delay relay
23 3 Concerning the fuel system, the correct statement is: A. In the event of DC power loss, the primary ejector pump ceases to operate and the engine flames out.B . The respective engine should be shut down if the respective FUEL FILT BYPASS annunciator illuminates.C. The FUEL BOOST switches should be on for takeoff and landing.D. The fuel filters should be inspected prior to the next flight if the FUEL FILT BYPASS light illuminates.
24 4If the L or R FUEL BOOST ON annunciators illuminate without any action by the crew (engine operating normally), the probable cause is:A. The engine-driven fuel pump has failed.B. The firewall shutoff valve has closed.C. The low-pressure sensing switch has energized the boost pump.D. The fuel flow compensator has energized the boost pump below 5 psi.
25 5 To verify that crossfeed is in fact occurring, it is necessary to: A. Monitor the FUEL QTY indicators for appropriate quantity changes.B. Only observe that the INTRANSIT light is out.C. Ensure both FUEL BOOST ON lights are illuminated.D. Ensure that the FUEL BOOST pump switch for the tank being fed is on.
26 6When crossfeed is selected by positioning the crossfeed switch to LH TANK, and the green INTRANSIT light stays on:A. This is normal.B . The boost pumps did not actuate.C. One or both crossfeed valves did not fully close.D. One or both crossfeed valves did not fully open.
27 7 Operation of the primary ejector pump is directly dependent upon: A. DC electrical powerB. High-pressure fuel from the engine-driven fuel pumpC. AC electrical power supplied by the No. I or No. 2 inverterD. Flow from the transfer ejector pump
28 8 If the engine-driven fuel pump fails: A. The engine will flame out. B. The primary ejector pump will fail also, but the boost pump will be energized by low pressure and will sustain the engine.C. The transfer ejector pumps will also be inoperative.D. Crossfeed must be selected in order to obtain high-pressure motive flow from the opposite engine.
29 9If crossfeed has been selected and normal DC electrical power is lost (system switch in EMER with a dual generator failure):A. The system will remain in crossfeed.B . The crossfeed valves will fail closed.C. Both boost pumps will be energized to terminate crossfeed.D. The motive-flow shutoff valve will fail open.