What would cause this?

Wolfar100 · Post by **Wolfar100** » Sat Jan 06, 2007 2:04 pm

This plane on one flight went from 100% to 52%, what would cause this?

Hull State % 4.31
Engine No 1 State % 99.99
Engine No 2 State % 99.99

UKD192 · Post by **UKD192** » Sat Jan 06, 2007 2:24 pm

Probably too high a vertical speed on touchdown - not sure what the client classes as a bad V/S, but I would say you would not want to go more than say -500/fpm. (But as I say I do not know what the limit is - Konny ?)
Further - I see someone has booked it out - with an a/c state of 52% that is just asking for trouble on the next flight

HTH
Rob

Wolfar100 · Post by **Wolfar100** » Sat Jan 06, 2007 2:44 pm

UKD192 wrote:Probably too high a vertical speed on touchdown - not sure what the client classes as a bad V/S, but I would say you would not want to go more than say -500/fpm. (But as I say I do not know what the limit is - Konny ?)
Further - I see someone has booked it out - with an a/c state of 52% that is just asking for trouble on the next flight

HTH
Rob

Yep I got to call him on the phone and tell him to un-book it ASAP! Guess I need to repair that bird.

This is another case in point to why I want the Touchdown FPM Velocity recorded in the flight report.

FsNovice · Post by **FsNovice** » Sat Jan 06, 2007 2:47 pm

That touchdown VS shouldnt be an issue, i landed at 1,300fpm and it didnt register a crash. Not saying though, i promote that sort of reclessness but it happens, in bad weather.

CAPFlyer · Post by **CAPFlyer** » Sat Jan 06, 2007 3:49 pm

The new maintenance program uses the landing velocity as the basis of how much damage is done to the airframe. The point being that with a heavy landing (like your 1,300 FPM) it's going to do a lot of damage to the hull but not necessarily the engines, so you could theoretically have the airplane's hull value could be dropped to nearly zero.

UKD192 · Post by **UKD192** » Sat Jan 06, 2007 3:49 pm

Some light reading regarding an increased rate of descent on landing (B737) http://www.aaiu.ie/upload/general/3514-0.PDF

Rob

Wolfar100 · Post by **Wolfar100** » Sat Jan 06, 2007 4:00 pm

UKD192 wrote:Some light reading regarding an increased rate of descent on landing (B737) http://www.aaiu.ie/upload/general/3514-0.PDF

Rob

VERY interesting reading.

Thank you!