Planes glide, fairly well. However, that requires having altitude and time to plan and maneuver since you cannot usually gain new altitude and any maneuver bleeds it off quickly. Control surfaces use hydraulics not electric motors, and standby power provides basic instrumentation, despite not powering the recorders.
And of course working landing gear (most landing gear drops and locks into position due to gravity, no power needed).
This particular case had basically none of those advantages, and possibly landing gear issues as well. There are a lot of questions in this crash, and many of the preliminary answers currently seem to be pointing towards things like poor maintenance, just bad luck, and the always possible pilot error.
This is why throat flight recorders are so useful. Hearing the pilot conversations in the cockpit helps with knowing what they were working through, and instrumentation logs help with what the plane was telling the pilots. Missing the last 4 minutes is the worst time for a gap, but the exact reason why battery backups are in newer planes. They should have been required to be installed in all previous ones as well.
Shouldn’t the RAT automatically deploy with a power loss? Can the APU be turned on if there’s a total power loss?
I imagine with four minutes and already at task saturation they may have just forgotten to deploy the gear. I also wonder if they had a single engine when they decided to go around, and then lost power and decided to loop back to runway 19. I also wonder if they decided to keep the gear stowed until final to improve performance, then lost power and forgot to deploy the gear.
I guess some of these things we might never know, especially without the CVR
How does one land a plane with no power at all
Planes glide, fairly well. However, that requires having altitude and time to plan and maneuver since you cannot usually gain new altitude and any maneuver bleeds it off quickly. Control surfaces use hydraulics not electric motors, and standby power provides basic instrumentation, despite not powering the recorders.
And of course working landing gear (most landing gear drops and locks into position due to gravity, no power needed).
This particular case had basically none of those advantages, and possibly landing gear issues as well. There are a lot of questions in this crash, and many of the preliminary answers currently seem to be pointing towards things like poor maintenance, just bad luck, and the always possible pilot error.
This is why throat flight recorders are so useful. Hearing the pilot conversations in the cockpit helps with knowing what they were working through, and instrumentation logs help with what the plane was telling the pilots. Missing the last 4 minutes is the worst time for a gap, but the exact reason why battery backups are in newer planes. They should have been required to be installed in all previous ones as well.
Shouldn’t the RAT automatically deploy with a power loss? Can the APU be turned on if there’s a total power loss?
I imagine with four minutes and already at task saturation they may have just forgotten to deploy the gear. I also wonder if they had a single engine when they decided to go around, and then lost power and decided to loop back to runway 19. I also wonder if they decided to keep the gear stowed until final to improve performance, then lost power and forgot to deploy the gear.
I guess some of these things we might never know, especially without the CVR
It’s crazy that they weren’t. Unusually so (at least the perception so) for the aviation industry.
The last few minutes is the most valuable data!
I don’t know, but aiming for a short runway with a wall at the end doesn’t seem to work.