Specifications

SECTION IV
OPERATING INFORMATION
MODEL 560
SERVICING
FUEL
A variety of fuels can be used in the airplane, but each must have anti-icing additive incorporated or
added to the fuel during refueling. Commercial kerosene Jet A, Jet A-1, Jet B, JP-4, JP-5, and JP-8 are
approved fuels and aviation gasoline in specified amounts is approved. Any grade of AVGAS is permitted
for a maximum of 50 hours engine time between overhauls providing the pilot operates the airplane within
the limits specified in Section II of the FAA Approved Airplane Flight Manual. For record keeping purposes,
1 hour of engine operation equals 70 gallons of gasoline. Refer to the FAA Approved Airplane Flight Manual
for limitations and fuel control density settings for optimum engine acceleration.
Additives meeting the specifications of MIL-I-27686 or MIL-I-85470 (DIEGME) can be used with fuel
that does not contain an anti-icing additive. Ethylene glycol monomethyl ether (EGME) and diethylene
glycol monomethyl ether (DIEGME) are approved anti-icing additives which meet these specifications,
respectively.
Refer to the Normal Procedures Section of the FAA Approved Airplane flight Manual for instructions
concerning procedures, quantities, and equipment to be used in treating the airplane fuel with anti-icing
additive.
WARNING
ANTI-ICING ADDITIVES CONTAINING ETHYLENE GLYCOL MONOMETHYL
ETHER (EGME) ARE HARMFUL IF INHALED, SWALLOWED, OR ABSORBED
THROUGH THE SKIN, AND WILL CAUSE EYE IRRITATION. ALSO,
COMBUSTIBLE. BEFORE USING THESE MATERIALS, REFER TO ALL SAFETY
INFORMATION ON THE CONTAINER.
CAUTION
• DIETHYLENE GLYCOL MONOMETHYL ETHER (DIEGME) IS SLIGHTLY TOXIC IF
SWALLOWED AND MAY CAUSE EYE REDNESS, SWELLING AND IRRITATION.
IT IS ALSO COMBUSTIBLE. BEFORE USING THIS MATERIAL, REFER TO ALL
SAFETY INFORMATION ON THE CONTAINER. ASSURE THAT THE ADDITIVE,
EGME OR DIEGME IS DIRECTED INTO THE FLOWING FUEL STREAM AND
THAT THE ADDITIVE FLOW IS STARTED AFTER THE FUEL FLOW STARTS
AND IS STOPPED BEFORE FUEL FLOW STOPS. DO NOT ALLOW
CONCENTRATED ADDITIVE TO CONTACT COATED INTERIOR OF FUEL TANK
OR AIRPLANE PAINTED SURFACE.
• USE NOT LESS THAN 20 FLUID OUNCES OF ADDITIVE PER 156 GALLONS OF
FUEL OR MORE THAN 20 FLUID OUNCES OF ADDITIVE PER 104 GALLONS OF
FUEL.
Insufficient additive concentration may result in fuel system icing. Excessive additive may cause fuel
tank damage or erroneous fuel quantity indications.
When refueling, do not operate radios, radar or other electronic equipment and ensure the fuel truck is
grounded and a ground is connected to the airplane. A fuel ground plug attachment point is located under
each wing tip.
It is not necessary to maintain fuel balance during refueling; however, maximum asymmetric fuel
differential for normal operations is 200 pounds. In an emergency, 600 pounds of fuel unbalance may be
tolerated. Flight characteristics requirements were not demonstrated with unbalanced fuel above 200
pounds.
I 4-32 Configuration AA 56OMB-01