Almost immediately after the accident, Korean news were posting pages of the “Quick Reference Handbook” supposedly “scattered” on the ground, and they said it meant the pilots were referencing the QRH till the very last moment before crashing into the concrete wall in attempt to save the plane.
However, it was pointed out that the pages are actually from the Flight Crew Operating Manual, not at QRH. Each pilot would have a copy of QRH next to their side of the console, but not the FCOM, which is meant for training.
Also, the binder rings for either book are very very hard to open, and each ring has to be opened one at a time. So it is improbably for each of the pages to be taken out in an emergency with their punch holes intact. Even if the pilots found time to actually reference the QRH, it would be far more likely for them to rip out the pages in an emergency.
This Taiwanese 737 pilot talked extensively about how improbable it is for the pages to be found like that in the first place, and even more improbable for it to be the result of the pilots referencing them in last minute.
The Cockpit Voice Recorder has been found and downloaded so the authorities already know what was said in the cockpit. They are no doubt waiting for the Data recorder to be downloaded. To match with what was being said in the cockpit to arrive at what was happening. THey have 30 days to come up with a preliminary report per international practice so there is no hurry for them to release premature possibly mistaken findings.
By the way, while most commentators have spoken about how the reinforced concrete wall for the antennas doomed the flight, the Korean authorities are maintaining that the design and construction of the structure followed regulation and as such they are not to blame.
Yet prosecutors have raided the regional government authority in charge of these matters. It looks like there will be a battle over possible criminal liability.
That is really a question. As pointed out in the article, it does square with the need for an abrupt short field wheels up landing, perhaps. It may have been a heroic effort just to make things that close.
This ex-737 pilot has the same idea. Korea is a country that rivals China in desperate face-saving. I wouldn’t put it past them.
He basically said there has only been one case where data in the blackbox was gone, United 585, and by gone, nothing was left. There is basically no way for just the most critical 4 minutes to be gone.
The blackbox is located at the tail of the plane, and people survived there, so there is no reason for the lost of data.
So the most likely reason for the data to be gone is because someone doesn’t want it out.