I would add that this is referred to as “ETOPS”, or Extended range Twin engine Operational Performance Standards (I had to look that up as I didn’t recall all the words.) When I was flying some years ago it was referred to in hangar talk as “Engines Turn Or Passengers Swim”.
-D > On Sep 20, 2021, at 12:42 PM, dan penoff.com via Mercedes > <mercedes@okiebenz.com> wrote: > > In some aircraft the APU is required for extended range operation > certification, I believe. That is, if you lose an engine the APU can be > relied upon to provide power and cabin bleed air, taking the load off the > remaining (operational) engine. Of course, it also provides power for engine > starting and cabin bleed air in a typical APU role as well. > > I’m not sure but I believe this is the case in some, if not all, Airbus > airframes. > > -D > >> On Sep 20, 2021, at 12:32 PM, Kaleb Striplin via Mercedes >> <mercedes@okiebenz.com> wrote: >> >> Not sure why, the APU really does nothing once the engines are started. In >> any case they are saying another 30-45 minutes, hopefully. >> >> Sent from my iPhone >> >>> On Sep 20, 2021, at 11:24 AM, Curt Raymond <curtlud...@yahoo.com> wrote: >>> >>> >>> I was on a flight once with a dead APU and there was no heat. Fortunately >>> PWM to IAD wasn't a long flight, it was pretty cold in the plane by the >>> time we landed though. >>> >>> That was a CRJ of some flavor... >>> >>> -Curt >>> >>> On Monday, September 20, 2021, 11:42:09 AM EDT, Kaleb Striplin via Mercedes >>> <mercedes@okiebenz.com> wrote: >>> >>> >>> Well they just rolled the air cart over and fired up the engines. Without >>> an APU one engine can start the other, but with both dead mid air and no >>> APU, I would only hope the airflow would be enough to spin them up. >>> >>> Sent from my iPhone >>> >>>> On Sep 20, 2021, at 10:40 AM, Floyd Thursby via Mercedes >>>> <mercedes@okiebenz.com> wrote: >>>> >>>> I don't think they would need the starter to do an airstart if the engine >>>> is spinning. >>>> >>>> I was on a flight once that had the BSOD on the control system, they >>>> rebooted the whole airplane 3X (start, shutdown, start...) then put us off >>>> to go find another airplane. >>>> >>>> --FT >>>> >>>>> On 9/20/21 11:34 AM, Kaleb Striplin via Mercedes wrote: >>>>> Of course they can start the engines with the ground APU but I assume if >>>>> they lost both engines in flight they would have no way to start them. >>>>> >>>>> Sent from my iPhone >>>>> >>>>>>> On Sep 20, 2021, at 10:30 AM, Kaleb Striplin <ka...@striplin.net> wrote: >>>>>> >>>>>> Never had this happen before. We pushed back, tug unhooked and plane >>>>>> lost all power, completely dead. No lights no AC no engines. I >>>>>> immediately think they lost the APU. Sure enough pilot comes on and says >>>>>> we lost the “backup” power to start the engines. Now being towed back to >>>>>> the gate. Guess we will need a jumpstart. >>>>>> >>>>>> Sent from my iPhone >>>>> >>>>> _______________________________________ >>>>> http://www.okiebenz.com >>>>> >>>>> To search list archives http://www.okiebenz.com/archive/ >>>>> >>>>> To Unsubscribe or change delivery options go to: >>>>> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >>> >>>>> >>>> -- >>>> --FT >>>> >>>> _______________________________________ >>>> http://www.okiebenz.com >>>> >>>> To search list archives http://www.okiebenz.com/archive/ >>>> >>>> To Unsubscribe or change delivery options go to: >>>> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >>>> >>> >>> >>> _______________________________________ >>> http://www.okiebenz.com >>> >>> To search list archives http://www.okiebenz.com/archive/ >>> >>> To Unsubscribe or change delivery options go to: >>> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >>> >> _______________________________________ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
