Beechcraft G18S

The Beechcraft G18S is a model in the Model 18 Twin Beech family. It is described here as a Twin-engine cabin piston aircraft. FAA type-certificate reference: A-765.

Beechcraft G18S is a Twin Beech configuration covered by FAA Aircraft Specification A-765. The represented section uses two Pratt & Whitney R-985-AN-14B engines, rated at up to 450 hp each, a 9,700 lb maximum takeoff weight and 318 U.S. gallons usable fuel. A-765 contains numerous optional engines, tanks, military conversions and gross-weight modifications, so the page preserves this as a configuration-specific baseline.

Standard usable fuel: 318 U.S. gallons. A-765 contains optional tanks and increased-weight configurations; this is the section-level baseline.

Match model designation, serial number and installed A-765 equipment items before applying these values. STCs can materially change engine, fuel and gross weight.

Maximum takeoff weight: 9,700 lb. A-765 lists nose/rear/wing baggage stations by model and equipment configuration. The represented baseline maximum takeoff weight is 9,700 lb. Use the A-765 station data and current aircraft W&B record for operational loading. Use the approved aircraft-specific documentation and current weight-and-balance record for operational calculations. WBcalc does not currently provide a model-specific Beechcraft G18S calculator.