I did some searching on the forums and didn't see anything about this that I could find.
Just started my airline, and getting ready to start my first flights. I've been doing some last moment checking, and I ran across this little oddity. I have a 737-400 BGW flying back and forth between two airports. On the flight from my hub to the other airport, there's 158 seats (economy and business) going out and 135 coming back. The specs show the 400BGW able to take 170 passengers. It's not a custom seating arrangement, and the weight payload is at about 73% of maximum. I'm at a loss. Why would the plane be carrying less than 170 passengers in total, and why would it change back and forth on each flight?