PPRuNe Forums - View Single Post - Air India Express B738 crash
View Single Post
Old 24th May 2010, 01:17
  #170 (permalink)  
4PW's
 
Join Date: Oct 2005
Location: Away
Posts: 300
Likes: 0
Received 0 Likes on 0 Posts
This is like the Libyan thread. Pilot error there. He descended below minimums while lining up on a road. Manoeuvring got them in the end. Said it early on, but got ragged out and thought the hell with it. Deleted most of my posts. Why be a part of the conversation? But it's happened again, and another airplane burns. The trend is not a good one. This time it's hard to call, but I reckon the probable sequence was this:

1. Hot and high, for whatever reason
2. Carrying speed and/or height over the thresh
3. Touches down in a little, maybe 2500'
4. 50' high is another 1000', minimum
5. Non-grooved runway
6. Lotta water has fallen, maybe > 30mm in the hour
7. Water on the runway is > 2.6mm setting it up for..
8. Reverted rubber hydroplaning
9. Gets to his 9 times the square root of the tire psi speed
10. One tire stops spinning
11. Steam builds up under the tire
12. The rubber shreds and the tire blows
13. Big swing
14. Pilot knows this is not cool
15. Tries to execute a touch and go
16. Now they're here, on PPRuNe

You may call it a 2nd takeoff, but a missed approach or a go-around it was not. Semantics. But they tend to matter. Whatever. It's easy to be high, but if you're happy to carry, first do the maths. Fifty feet makes a difference. What would 200' high mean? It's scary: 3816' longer than where you should touch down, which might mean touching down 5300' in from the threshold. Not good. Very not good.

Last edited by 4PW's; 24th May 2010 at 01:30.
4PW's is offline