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Refueler approach to prop, prop/jet, and transport aircraft
OVERWING (GRAVITY) REFUELING BY TRUCK

Aviation Boatswains Mate F - Aviation theories and other practices
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transport aircraft; figure 7-10 illustrates the alternate approach paths for helicopters. Refuelers must NEVER be left pointing toward any part of an aircraft; be driven in the area described by straight line projections connecting points 10 feet from an aircraft’s extremities (see figures 7-8, 7-9, and 7-10); or be backed in proximity to aircraft. The refueler is parked in a position on the same side of the aircraft as the aircraft’s adapter, so that the driver/operator has a direct line of sight to the refueling nozzle operator while actuating the deadman control. Failure of the driver/operator to visually observe the nozzle operator throughout the refueling operation can lead to a fuel spill and fire. Tailpipe temperature and the location of aircraft tank vents are important considerations when determin- ing alternate routes and fueling positions. The hose must NOT pass underneath the aircraft’s fuselage to reach the aircraft’s fueling adapter. Aircraft refueling with trucks is a three-person function. Required are a nozzle operator (supplied from the squadron, maintenance department, or transient line), a driver/operator (from the fuels divi- sion), and a fire extinguisher operator (supplied by the squadron). The nozzle operator assists the driver/op- erator in removing and replacing the hose on the refueler. The driver/operator prepares the truck for refuel- ing operations as follows: 1. Recirculate (flush) the truck and take a fuel sample for quality control checks as appropriate. Fuel is recirculated/flushed through the refueling hose and nozzle, then tested for contamination prior to refueling the first aircraft each day. Fueling must NOT begin until acceptable results have been obtained. 2. After a hot-brake check of the aircraft (fixed- wing only) has been performed, drive the refueler into position for refueling, following the approach paths discussed previously. The refueler should be positioned so that it can be driven away quickly in an emergency. Wheel chocks should NOT be used. 3. Set the brakes. 4. Place the gear shift in neutral. 5. Turn off the headlights and unnecessary switches. 6. Open the driver’s side door. It remains partially open during the entire refueling operation. CAUTION A window in the truck cab must be kept at least partially open whenever the truck is sta- tionary and the engine is running, to prevent the buildup of carbon monoxide inside the cab. Figure 7-10.—Alternate refueler approach to a helicopter. 7-18







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