Smoozesailing

25th Sep 2007, 17:52

Okay, it's time to whip out your calculators and help me with a problem I'm having. First you will have to download FODCOM 8/99 from the CAA website here: http://www.caa.co.uk/application.aspx?catid=33&pagetype=65&appid=11&mode=detail&id=306

The scenario I am looking at is: A 8-door widebody aircraft. Door 1, 2 and 4 are Type A doors and Door 3 is a Type I. Door escape ratings (110) are the more limiting value for Doors 1,2 and 4 (raft capacity is greater); but for Door 3, as it is a Type I door does not have a raft. The Maximum Approved Passenger Seating Configuration is 240 seats and Zone A has 12 seats, Zone B 96 seats and Zone C 132 seats. Zone A is a low density zone (premium class) so Zone B passengers can use door 1 in the event of door 2 being inoperative. But Zone B is the start of cattle class so Zone B cannot skip door 3 to go to door 4 and Zone C cannot skip door 3 to go to door 2 (calculation-wise).

Where I keep getting stumped is for example, when Door 1 is inop, MAPC is 220, which should mean a 20 seat reduction (MAPSC-MAPC=20.)(right?) But when I look at how Zone C is configured, I can only get 110 out of the 132 pax out Door 4, which would mean 22 seats being blocked. So which is it 22 or 20?:ugh: I can't get anybody out Door 3 because the raft capacity is 0. Where is my calculations going awry?

Why am I doing all this? Well, I think my company MEL is not set up right and might need fixin'.

The scenario I am looking at is: A 8-door widebody aircraft. Door 1, 2 and 4 are Type A doors and Door 3 is a Type I. Door escape ratings (110) are the more limiting value for Doors 1,2 and 4 (raft capacity is greater); but for Door 3, as it is a Type I door does not have a raft. The Maximum Approved Passenger Seating Configuration is 240 seats and Zone A has 12 seats, Zone B 96 seats and Zone C 132 seats. Zone A is a low density zone (premium class) so Zone B passengers can use door 1 in the event of door 2 being inoperative. But Zone B is the start of cattle class so Zone B cannot skip door 3 to go to door 4 and Zone C cannot skip door 3 to go to door 2 (calculation-wise).

Where I keep getting stumped is for example, when Door 1 is inop, MAPC is 220, which should mean a 20 seat reduction (MAPSC-MAPC=20.)(right?) But when I look at how Zone C is configured, I can only get 110 out of the 132 pax out Door 4, which would mean 22 seats being blocked. So which is it 22 or 20?:ugh: I can't get anybody out Door 3 because the raft capacity is 0. Where is my calculations going awry?

Why am I doing all this? Well, I think my company MEL is not set up right and might need fixin'.