When the truck is in position and prepared as above, conduct fueling operations as follows: 1. Secure all electronic and electrical switches on the aircraft that are not required for fueling (plane captain). 2. Verify that manned fire-fighting equipment is in the immediate vicinity and upwind of the refueling operation (refueler operators). 3. Attach the bonding cable between the refueling equipment and the aircraft (plane captain). 4. Pull out the hose (or pantograph) and place it in the proper position for refueling (nozzle operator and refueler operator). 5. Remove the refueling adapter cap from the aircraft, and the dust cover from the pressure nozzle. Inspect the face of the nozzle to make sure it is clean, and verify that the flow-control handle is in the fully closed and locked position (nozzle operator). 6. Visually inspect the aircraft’s adapter (recep- tacle) for any damage or significant wear. A worn or broken adapter can defeat the safety interlocks of the refueling nozzle, permitting the poppet valve to open and fuel to spray or spill. 7. Lift the nozzle by the lifting handles, and align the lugs on the nozzle with the slots on the aircraft adapter. Hook up the nozzle to the aircraft by pressing the nozzle firmly onto the adapter and rotating it clock- wise to a positive stop (nozzle operator). The nozzle must seat firmly on the adapter and not be cocked. Cocking can indicate a malfunction of the nozzle’s safety interlock system, which could lead to a fuel spray or spill. 8. Zero the refueling meter or the totalizer reading (refueler operator). 9. Rotate the nozzle flow-control handle to the FULL OPEN position. The handle must rotate 180 degrees to ensure the poppet valve is fully open and locked (nozzle operator). 10. Upon receiving signals from the nozzle opera- tor and the plane captain that the hook-up has been completed and that they are ready to begin the fueling operation, the refueler operator actuates the remote, hand-held deadman control. 11. Once fuel flow has been established, test the aircraft’s precheck system (plane captain). 12. Fuel the aircraft as directed by the plane cap- tain. The plane captain monitors aircraft vents, tank pressure gage(s), and/or warning lights, as necessary. 13. When directed by the plane captain, release the dead man control (refueler operator). 14. Rotate the nozzle flow-control handle to the OFF and fully locked position (nozzle operator, and verified by the refueler operator). 15. Disconnect the nozzle from the aircraft adapter (nozzle operator). 16. Stow the pantograph or hose (nozzle operator and refueler operator). 17. Complete the paperwork (nozzle and refueler operators). OVERWING (GRAVITY) REFUELING BY TRUCK Overwing (gravity) refueling of aircraft from trucks is done using the procedures as above but with the following modifications: The overwing nozzle must be bonded to the aircraft via a nozzle bonding cable prior to removal of the filler cap. CAUTION OverWing refueling with the aircraft’s en- gines operating (hot refueling) is NOT author- ized. The overwing nozzle is inserted into the air- craft’s refueling port. Metal-to-metal contact between the nozzle and the aircraft fueling port must be main- tained during the entire fueling operation. REFUELER PARKING All activities require that refueling vehicles be constantly attended whenever the engine is operating. The operator is considered in attendance when per- forming tasks directly associated with fueling an air- craft; for example, assisting the aircraft refueling operator, transporting the hose. If the operator is to leave his truck unattended, he must first 1. drive the truck clear of the aircraft; 2. place the air brake in ON and LOCKED posi- tion, if applicable; 3. 4. area; 5. set the parking brake; direct the front wheels to an open, unobstructed stop the engine; and 7-19