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Gfa 157an

MISCELLANEOUS AIRWORTHINESS INFORMATION - VENTUS bT

Applicable all serial numbers. Optional installation of :- (a)  Fuel shut-off valve control; (b)  Fuel tank locking device. (a)  By moving the fuel shut-off valve from the GFRP inner cockpit skin to the rear of the fuselage skin near the wheel box, the length of the fuel line is shortened by 2.5 m and the danger of vapour locking is reduced. A control knob, located in the valve’s former position, actuates the shut-off valve by means of a push-pull rod. (b)  By providing an additional locking device for the fuel tank, it is held more securely in place.  The above optional modifications are covered by Schempp-Hirth Technical Note No. 825-26.