60, A60, B60 DUKE Ground Handling Battery The electrical system utilizes one 24V Ni-Cad battery, one 24V Lead Acid battery or two 12V Lead Acid batteries, located behind the firewall of the left engine in the electrical equipment compartment. Access is gained by removing the upper door of the compartment, located aft of the left nacelle firewall. Emergency Exits Left rear cabin door. Right front cabin window has emergency release. External Power The external power receptacle is located on the outboard side of the left engine nacelle and uses a standard AN-type plug. This aircraft requires a 28V, DC, negative ground power unit. CAUTION: Battery switch must be ON and all electrical switches OFF prior to connecting ground power unit plug: assure that avionics power is OFF prior to turning the ground power unit ON. Battery must be ON anytime ground power unit is in use. Alternator or generator switch must be OFF while using external power. Fueling Standard configuration incorporates four interconnected fuel tanks in each wing with one filler port for each set. Fueling should be accomplished slowly to allow the fuel to feed between tanks. Maximum capacity: 207 gals. (standard), 237 gals. (optional tip tanks); Minimum grade: 100/130 green, or 100LL blue CAUTION: DO NOT insert the fuel nozzle more than three inches into the filler neck. The nozzle may damage the rubber fuel cell. Grounding Static grounding requires the fuel dispenser be grounded to the landing gear. Hydraulic Reservoir The brake fluid reservoir is located on the aft frame of the forward baggage compartment door. Loosening the screw that secures the reservoir to the aircraft structure allows the reservoir to swing out for servicing. Fluid type: MIL-H-5606 red hydraulic fluid. Engine Oil Access to the engine oil filler port and dipstick is gained by opening an access door in the top of each engine cowl. Capacity: 13 qts. (each engine); Type: reciprocating Oxygen Service The oxygen cylinders may be mounted either under the nose baggage compartment floor or behind the aft pressure bulkhead. Access to the forward-mounted filler valve is gained by opening the nose baggage compartment door. Access to the aft-mounted filler valve is gained by removing a small panel on the lower left side of the tailcone, aft of the cabin door. Parking Brake The parking brake is set by pulling out the brake control and depressing the pilot's brake pedals to pressurize the system. The brake is released by pushing the control forward. Tires NOSE 15 x6.00 x6,4 ply 47 to 50 psi MAINS 19.5 x6.75 x8,10 ply 76 to 83 psi