G4Doc2004 From United States of America, joined Feb 2004, 123 posts, RR: 0
Reply 1, posted (9 years 7 months 3 weeks 6 days 16 hours ago) and read 7683 times:
No, due to how the plane is certified, the TCDS or certification allows it to be airworthy ONLY if equipped with the engines specified on its certification data sheet, thereby ensuring the aircraft will perform according to the manufacturers specs.
Now, in theory, you could obtain an STC to do this, but I have a hard time believing the FAA or other agency would approve it.
"Failure to prepare is preparing to fail"--Benjamin Franklin
777WT From United States of America, joined Jan 2005, 879 posts, RR: 1
Reply 2, posted (9 years 7 months 3 weeks 6 days 16 hours ago) and read 7680 times:
The 787 has engine interchangeablity plan in the design.
You could swap it between GE and RR if the buying airline only wants GE and the selling airline has the RR powered 787.
However they did bring up the possibily of running different brand engines, like GE on one side and RR on the other with just a software change.
This is that if you went somewhere remote and there's no GE avail there but happens to have RR avail, It can be put on and sent on it's way.
Pilotpip From United States of America, joined Sep 2003, 3152 posts, RR: 10
Reply 4, posted (9 years 7 months 3 weeks 6 days 7 hours ago) and read 7604 times:
If you were to do an engine swap, the powerplants aren't the only thing that would need to be changed. You'd also be changing items like the Fuel Control Unit, generators, and in some cases, cockpit guages. It's not very cost effective and means that two parts have to be stocked for one airplane, mechanics have to have two manuals for one aircraft, etc.
DarkBlue From United States of America, joined Sep 2003, 233 posts, RR: 9
Reply 5, posted (9 years 7 months 3 weeks 5 days 20 hours ago) and read 7550 times:
One of the biggest issues of mixing engines is engine control. RR requires the pilot to set power based on EPR. GE uses fan speed. Certainly a flight computer could be designed to manage the 2 types of control systems at the same time, but this is no minor issue.
Yes, the 787 will have interchangeable engines, but I'm not aware of any plan to allow a mixed configuration.