[27飞行操纵] 关于后缘襟翼驱动组件船型整流罩编号

737NG INB'D FLAP OUTB'D TRACK FAIRING SEAL MISSING

Flying with the 113A9350-11/-12 seal missing does not meet the certification requirements for the 737NG. Areas near the engine that could contain flammable fluid are required to be sealed. 

For this reason, we are unable to add it to the CDL or approve flying without the seal in place. On a case-by-case basis, we may be able to offer a No Technical Objection (NTO) to fly with the seal missing for a very limited number of flight cycles on a non-renewable basis. 

In our evaluation of each specific case, Boeing would assess the potential hazards which could result from dispatch in a non-compliant configuration. 

That evaluation would be based on whether any potential safety risk resulting from that dispatch allowance (e.g. seal missing for 10 flights) is below the FAA recommended safety criteria regarding the probability of a problem developing during that limited number of flights.

In this case we would recommend to visually inspect the aft fairing cavity for flammable fluids prior to beginning the limited number of cycles without the seal in place. 

No other components of the fairing assembly could be missing during these cycles. Because this configuration would not meet the type certification basis of this airplane, we would be unable to offer any approval for this situation.