Utter Rubbish
Quote "All potential causes are addressed in the updated system. Of course it should fly ETOPS - the 787 has twice the electrical redundancies of a 767: four engine generators vs two, two APU generators vs 1."
The 787 is a pure electrical aircraft for for airconditioning and Hydraulics, even thought the left and right have electrical & engine driven pumps...to say it has twice the redundancies is garbage.
A valid scenario...one Engine driven generator inop so as per the MEL permissible to operate supposely ETOPS with the APU running...
Aircraft dispatches...APU Battery fails - APU will shutdown due no APU battery on the APU Hot Batt Bus.
Left with one engine generator supplying the whole aircraft plus a RAT which only supplies limited power....if the main battery fails, what are the results, no contactor management availability, so the position of main power contacts stay in there last place, possible dead short on the Hot Battery Bus...
Yeah fly the 787 ETOPS and risk a major disaster...
The 787 should loose all ETOPS! Till it can prove the Li ion Battery technology is safe, building a Band Aid box to contain a fire or thermal runaway isnt a fix!
Last edited by Goddamnslacker; 14th Apr 2013 at 09:30.