简答题 In the case of extreme cold weather condition fuel leaks from the drain mast may occur on a non-running engine and during engine start This leakage can stop after a 5-minute warm-up at minimum idle.

简答题 Leading and trailing edges distortion in Areas B and D (out of root area and area A of trailing edge). Two areas may be distorted up to 0.34 in. (8.64 mm) out of contour provided there are no sharp corners and the minimum length L is six times the depth of the distortion.

简答题 FAULT DESCRIPTION： CHECK FOUND 12J SEAT TABLE KNOB MISSED. MAINTENANCE MEASURES： DESK USE TAPE FIX REBACK POSITION.

简答题 THE PURPOSE OF THE DDG,In the precondition of the flight safety, let the flight operate normally, permit the airplane to be operated in a period of time with the unavailable equipment, until the corrected action completed, and the corrected action will be performed as earlier as the opportunity coming.

简答题 When the engine anti icing is selected to ON from the cockpit overhead panel, hot bleed air from the engine is ducted to the cowl nose lip to prevent ice build-up. The hot air enters to the inlet lip via a dedicated duct at the 4 o' clock position through the front bulkhead.

简答题 CHECK OXYGEN IND BEFORE TAKEOFF .REF BOEING FLT PLAN AND PERFORMANCE MANUAL FOUND MINIMUM BOTTLE PRESSURE FOR DISPACH

简答题 ADS-B is a surveillance technology in which an aircraft determines its position via GPS and periodically broadcasts it, enabling it to be tracked.

简答题 Tag the VBV system with a “unserviceable-repairable” tag in which the “reason for removal” field filled out with “Send to shop for overhaul refer to CMM ”.