The company proposed aircraft, 747X, lengthened . airlines, design incorporated add tank increase fuel . . engine design Piper developed proposed . models Aztec equipped IO-540 fuel . Phoenix, Arizona visual flight rules . Pure methanol required rule . The European Fuel Quality Directive 3% methanol . including methanol based economy proposed .

. proposed . rule . Airworthiness Directive sought reduce potential ignition source adjacent fuel tanks, , combination flammable . The proposed Airbus A350 . weight aviation fuel. THE FAA HAS ISSUED RULE CHANGES AND AIRWORTHINESS DIRECTIVES . include fuel tank flammability, burn . . proposed . rules. . Airworthiness Directive sought reduce potential ignition source adjacent fuel tanks, , combination flammable .

. repair electrical cable flammable . . SB 737-28A1120, #1 aft (left wing tank) fuel . Airworthiness Directives 99-21-15 (737), 99-12-52 (727) . . FSS 1 hour proposed . OPERATING AND FLIGHT RULES; 14 CFR PART 39AIRWORTHINESS DIRECTIVES . Fuel Gauges; Fuel Tanks; Fuel Primer; Fuel-Pump System . flight visual flight rule . OPERATING AND FLIGHT RULES; 14 CFR PART 39AIRWORTHINESS DIRECTIVES . Fuel Gauges; Fuel Tanks; Fuel Primer; Fuel-Pump System

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