Great photos Grahame - thanks for sharing them...
A bit of a technical question for those in the know... Now that the B787 is in service, a modification was made to the APU exhaust: -
Quote:
Natural fuel leaks from the auxiliary power unit (APU) fueling line were supposed to drain harmlessly out the bottom of the structure as designed, though rather than do that, the fuel was pooling into the APU exhaust cone.
The result, when the APU was started back up again, this page is told, the fuel torched out of the back of the tailcone. Naturally, this was a phenomena Boeing and the FAA wanted to avoid. Sources say APU drainage evaluations have been a particular focus of flight test over the past several months.
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Source: -
APU drainage behind Boeing's 787 tail cone tweak
I would've thought that this modification would have been done to the test fleet? Below is the modification I am talking about...