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Fuel System Overview - Efficient and Safe Fuel Distribution

The fuel system consists of three interconnected crash-resistant fuel cells, ensuring efficient and safe fuel distribution. Dual pumps, flow switches, and quantity probes monitor fuel levels, with low fuel indicators for added safety. Maximum fuel capacity is 112 gallons, with usable fuel at 110.7 gallons.

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Fuel System Overview - Efficient and Safe Fuel Distribution

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  1. FUEL SYSTEM The fuel system is comprised of three interconnected crash resistant fuel cells. Two forward fuel cells are located under the aft facing passenger seats. The aft fuel cell is located beneath and behind the aft passenger seat. Fuel from the two forward fuel cells is transferred to the aft fuel cell by means of a dual element ejector pump, located between the forward cells. All fuel cells are vented overboard by a common vent line.

  2. A dual element boost pump is located in the sump of the aft fuel cell. In the event of boost pump failure, flow switches activate the L/FUEL PUMP or R/FUEL PUMP caution light on the instrument panel. Fuel quantity probes are located in the left forward fuel cell and the aft fuel cell. A fuel quantity transmitter in the aft fuel cell is electrically connected to the fuel quantity probes and to the fuel quantity gage. A low fuel switch, located in the aft cell sump, is connected to the FUEL LOW caution light on the instrument panel. The caution light will illuminate when approximately 65 lb. (10 gal) of usable fuel remains in the aircraft. The fuel cell sump is also equipped with an electric solenoid drain valve, actuated by a button located on the lower right side of the aft fuselage

  3. FUEL SYSTEM CAPACITY • Total Capacity 112.0 Gal. • JP-4 (6.5 lb/gal) 728.0 Lbs. • JP-5 (6.8 lb/gal) 761.6 Lbs. • Usable Fuel 110.7 Gal. • JP-4 (6.5 lb/gal) 719.6 Lbs. • JP-5 (6.8 lb/gal) 752.8 Lbs. • Unusable Fuel 1.3 Gal. • JP-4 (6.5 lb/gal) 8.5 Lbs. • JP-5 (6.8 Ib/gal) 8.8 Lbs.

  4. RIGHT FWD CELL DUAL ELEMENT EJECTOR PUMP R/FUEL PUMP FLOW SWS L/FUEL PUMP LEFT FWD CELL CHECK VALVES INLINE FILTERS

  5. EJECTOR PUMP RETURN LINE FUEL LOW SENSOR FWD TANK FILLER PIPE FUEL PROBE DUAL ELEMENT ELECTRIC PUMPS L R

  6. Shut Off Pressure xmit

  7. ONE LONG PROBE AFT 2 SHORT PROBES (ONE FWD, ONE AFT)

  8. FUEL BURN vs CENTER OF GRAVITY A/C without Fuel Quantity Selector Switch installed MOST FWD CG 70.0 Gal 455.0 Lbs FULL 110.7 Gal 719.5 Lbs MOST AFT CG 46.9 Gal 305.0 Lbs

  9. FUEL BURN vs CENTER OF GRAVITY A/C with Fuel Quantity Selector Switch installed 70.0 Gal 455.0 Lbs FULL 110.7 Gal 719.5 Lbs MOST FWD CG 28.8 Gal 187.2 Lbs MOST AFT CG 16.1 Gal 104.7 Lbs

  10. All Weights are given for Jet-B Fuel 455.0 305.0 4 5 3 187.2 2 6 104.7 7 1 719.5 50-75 FUEL LOW 8 EMPTY RED INDICATIONS FOR A/C WITHOUT FUEL QUANTITY SWITCH BLACK INDICATIONS FOR A/C WITH FUEL QUANTITY SWITCH

  11. MOST AFT CG MOST FWD CG FULL

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