Originally Posted by
Rednerib
From the point of view of 'Human Factors'
1. The first is observed when the crew says that they are comfortable at 3500 feet at 5 miles. Here the crew is getting self trapped into being committed for landing
2. Second is when they announce that they are established on ILS, which they are not. Making such announcements would put lot of pressure on the crew to somehow push through the landing.
Ego could also have been triggered here. Still, the landing could have been hacked but for the fact that the gear was missed. This resulted in irretrievable situation.
Tunnel vision and get homeitis have a role.
Such mistakes though not common do happen. Here the crew were unlucky to have additional and overlooked problem of gear.
Another logical assumption emerged by a A320 pilot:
There was no issue of L/Gs, L/Gs were down during 1st attempt.
G/A was opted to avoid runway overshoot due to high altitude approach leading the acft to 4500 ft from threshold.
Now this is the catch:- Probably Flaps selection to position 3 from 4 and Gears Up selection was too early while engines still spooling up from approach Idle to TOGA,.
Too early retraction of Flaps caused loss of lift and acft sank while the Gears already retracted up and engines dragged along the runway 3 times( as witnessed on runway)
First mark : Eng 1
2nd mark: Eng 2
3rd mark: Both engines
Acft climbed with struggling engines to 3000 ft but couldn't hold the Alt and ATC warned the crew about this and crew asked for 2000 ft but due to complete loss of power acft kept on descending and crashed on to residential area.
Pic taken by plane spotter shows dragged engines with black marks and RAT auto deployed due to dual eng failure( AC Bus 1 & 2 being dead ).
Having lost G&B Hyd crew extended the Gears by Manual Gravity Extension, L/Gs extended can be seen in the video just before crash.
Aircraft was still maneourable as Flt Control being supplied by Blue Hyd circuit pressurised by RAT and Flight Control computers by Emergency Generator but no power to keep the acft up.