The flight route which was taken after the plane experienced flown past radar variety can now be reconstructed by using a much higher degree of assurance. The latest conclusions are that To begin with, the pilot diminished velocity from M0.84 to M0.eighty one Soon ahead of flying out of radar range. Next, that he remained on flight route N571 at FL350 right until he was 25NM out from waypoint IGOGU, at which place he commanded the FMC to fly towards a pre-decided manually inserted waypoint, identified as S41.00, E88.00. Thirdly, that when the plane started the turn south, the pilot commenced to lessen speed from M0.
I don’t understand how the APU coming on line would “appropriate” the roll introduced by floating left flaperon. Restoration of electric power to your Still left and Suitable hydraulics when the APU started out would definitely trigger the remaining flaperon to retract on the stowed placement nevertheless it wouldn’t bring the plane back to wings level.
To me this bears the signs of a pilot-induced high speed steep descent…Did not see conclusive arguments nevertheless that refute this chance.
• BTW, 1 other effect on aircraft dynamics which has absent unmentioned is engine gyroscopic forces, due to the fact they may have a similar route of rotation. This would act to translate pitch into yaw and VV but I have no idea by exactly how much.
• In summary then I feel the possibility of a left motor relight acquiring been accountable for a financial institution which resulted in the final BFOs is negligible.
The modelling on the plane systems’ conduct might not be entirely accurate once the FQIS demonstrates zero fuel remaining in the tanks. The ATSB believed that about 30 lb of gasoline was available to the APU following left engine gas exhaustion. It is actually unclear if that quantity contains the fuel from the APU fuel line In combination with that out there within the tank. On the other hand, based on the calculated most operate time of 13 minutes forty five seconds, I assume the thirty lb determine contains equally the gas in the road Which while in the tank.
Victor Iannello suggests: January six, 2018 at 10:58 am @ASLM: I'm not referring to the simulators’ modeling of flight dynamics for out-of-envelope situations. Fairly, I am referring for the shortcomings on the model at a systems amount and unknowns with regards to the configuration of your plane. I think the BFO values show that possibly lateral asymmetry or nose-down input brought about the aircraft to enter an progressively steep descent.
Regarding my assertion about APU start out and motor relights not remaining Component of simulations I draw that through the ATSB’s Lookup and Debris Examination 2nd November, 2016 Report, “It was impossible to simulate all most likely scenario problems as a result of the restrictions with the simulator. Exclusively, flight simulators are not able to correctly product the dynamics with the aircraft’s gasoline tanks. During the simulator, in the event the gas tank is vacant, zero fuel is offered to all units fed from your tank.
I'm astonished the authors of the new Xmas Island study didn't site the work of Mikhail P. who presented an independent input concerning the Xmas Island terminus. I did. Perhaps they were being scared of pissing off Oleksandr.
If I remember the right way, ALSM experienced insisted that the AES merely would not transmit if it did not have the necessary navigational details input. Your post higher than says that Holland’s revised paper reveals that it utilizes a distinct/secondary BFO algorithm in this sort of an occasion
It’s just that every paper that ignores the details from the particles finds and it’s spots I are unable to take critical.
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”In all our simulations, the plane started to bank shortly additional info immediately after FE. I have without a doubt that may be what happens in genuine 777s. The lender angle will increase with time in the many sim’s. There is absolutely no doubt that also takes place in real 777s.
You reported: Depending on how much time the plane had been jogging on view it just the RAT plenty of roll may well have already been released for it to continue to enhance even following the left flaperon had been retracted [sic].