Regulacje i polityka gospodarcza · 12/12/1995

Airworthiness Directives; Learjet Model 23, 24, 25, 35, and 36 Airplanes

This amendment adopts a new airworthiness directive (AD) that is applicable to certain Learjet Model 23, 24, 25, 35, and 36 airplanes. This action requires repetitive inspections to detect deterioration of both flapper valves of the tip tank in each wing of the airplane, and various follow-on actions. This AD action also requires replacing the flapper valves with new flapper valves, and repetitively performing certain other follow-on actions. This amendment is prompted by reports of imbalance of the fuel loads in the wings of the airplane due to failed or cracked flapper valves. The actions specified in this AD are intended to prevent significant reduction in the lateral control of the airplane due to imbalance of the fuel loads in the wings of the airplane.