Che From United States of America, joined Feb 2000, 537 posts, RR: 0 Posted (14 years 3 months 5 days 11 hours ago) and read 3692 times:
A few days ago I was on an AA Eagle Saab 340 from DFW-BTR (Baton Rouge,LA). When we all got on the flight the f/a made most of us move towards the back so the plane would be balanced. Also there were only about 15 pax on this fight. (july 4th).
Why would she do this? Is there really a need to balance th aircraft? I have never seen this done before.
Also one lady who was asked to move back
said she got airsick in the back so she wondered if she could switch seats with a man in the front. But then the f/a said that if she switched seats that would make the plane unbalanced. Weird
Fr8tdog From United States of America, joined Feb 2000, 120 posts, RR: 0
Reply 1, posted (14 years 3 months 5 days 10 hours ago) and read 3648 times:
Yes this is common for regional Turboprop aircraft.
The Saab has a forward or neg CG when empty, This allows for balancing out the aircraft when the cargo is loaded aboard the aircraft.
Passengers must be moved aft if there is not enough weight in C1 or C2 compartment.
Now on the other hand if there is a lot of weight in the cargo section, we may have to shift passengers forward.
In the case of an aft CG, a jumpseater up front is very advantagous to the flight crew allowing for us to subtract "Index units" or Percent MAC if you perfer, allowing the CG to shift slightly forward.
This shifting of cargo or passengers is all acomplished via weight and balance sheets, that the pilots work prior to every flight.
In fact if we have a deadhead or empty leg, we must have 200lbs of ballast aboard in C2 or if an f/a is riding with, they must ride in one of the last row of seats on the aircraft.
Prebennorholm From Denmark, joined Mar 2000, 6888 posts, RR: 54
Reply 6, posted (14 years 3 months 4 days 17 hours ago) and read 3600 times:
It is that complicated at every flight.
The visual problem (for the pax) arises on flights with one class and free seating - typically short regional turboprop flights.
On larger planes you are mostly assigned a seat at check-in, and your seat allocation takes plane balance into account.
All domestic flights in Denmark are one class and free seating. On every other flight with roughly half load the pax are requested to move backward or forward for balance reasons. We are so used to it that we hardly notice. Some frequent fliers even ask the FA at boarding which end of the cabin is best today in order to avoid being moved around later.
Some pax are not very eager to move up front in the turboprops since they are so noisy up front, But hell, it is seldom much more than 30 minutes before you are back on the ground again.
Best regards, Preben Norholm
Always keep your number of landings equal to your number of take-offs