To: RatherBeFlying
Is this a repeat of the Air Transat misrigging or a new way to screw it up
The Air Transat mechanic installed the fuel line backwards. However, this "misrigging as you call it" should have been impossible. Good design for Maintainability dictates that elements that could cause problems if installed backwards should be designed in such a way as to make the backwards installation impossible.
When the line was installed backwards the critical clearance between the fuel and hydraulic lines was compromised. There was no mention of the possibility of backward installation mentioned in the maintenance manual for the A-330 or, the RR Trent 700 engine maintenance manual. A similar problem occurred on the GE and P&W engines used on the A-330 and an AD was issued to check for proper clearance between critical lines.
Rolls Royce never issued a similar AD for their engine.
Shortly after the "Atlantic Glider" incident Air Transat took delivery of a brand new A-330 and they found that on one of the engines Rolls Royce had installed the same line backwards.
