From the FAA site (https://www.faa.gov/licenses_certificat ... eral_info/):
Kinds of 14 CFR 135 Certificate Operating Authorities
Another important consideration when starting the certification process is for the applicant to determine the kind of operations that they wish to conduct. 14 CFR 135 certificate holders can conduct On-demand operations, which may include limited scheduled operations, or Scheduled (Commuter) operations, which allow unlimited scheduled operations as well as On-demand operations. Each kind of operation, On-demand or Commuter, has specific limitations associated with them. These include the number of passenger seats that can be installed on the aircraft, maximum payload limits, and whether turbo-jet aircraft can be used in that kind of operation.
On-demand operations can be conducted in airplanes that have a passenger seating configuration of 30 seats or less, a maximum payload capacity of 7500 pounds, or in any rotorcraft.
On-demand certificate holders can also conduct limited scheduled operations with the following additional restrictions:
Less than 5 round trips per week on at least one route between two or more points according to published flight schedules,
No turbo-jet airplanes can be used, and
Airplanes are limited to a maximum passenger seating configuration of 9 seats or less.
Commuter operations may be conducted in airplanes which have a maximum passenger-seating configuration of 9 seats and a maximum payload capacity of 7500 pounds, or in any rotorcraft. Commuter operations cannot be conducted in any turbo-jet aircraft.
A certificate holder with Commuter authority can also conduct On-demand operations.
The schedule part of an on-demand operator seems to limit that portion to 9 seat or fewer non turbojet aircraft doing less that 5 trips per week. JSX seems to fail all three of those on some routs, and always fails two of them.
The commuter part also requires 9 seat max planes, so again, they don't fit that.
So what am I missing? Are these flight somehow treated as on-demand even though there is a published schedule?
Don't get me wrong, I think their operation is interesting, but since I'm on the wrong coast, I haven't/are not likely to fly them soon, but I'd like to of the opportunity arose. My logical brain just can't reconcile how they meet what I'm reading about Part 135.