Boeing igjen i FAAs søkelys vedr et AD for MAX - AW&ST

 

FAA Issues AD For 737 MAX Loose Fastener Checks

Guy Norris March 24, 2023

 

Credit: Guy Norris / AWST

The U.S. FAA has issued an immediate airworthiness directive (AD) calling for inspections of inlets on a batch of CFM Leap-1Bs powering Boeing 737-8s, -8200s and -9s for mis-installed fasteners around the engine anti-ice (EAI) exhaust duct.

The FAA AD, which applies to around 330 U.S.-registered 737s, addresses a potentially unsafe condition which could occur if loose or missing fasteners allow high temperature bleed air from the EAI exhaust duct to leak into the inlet composite inner barrel. Should this occur, the AD says the heat could compromise the inlet’s structural integrity, eventually leading to separation of the inlet and fan cowl under normal flight loads.