2-4 Intra-Alaska Transportation Mail Rates

2-4.1 Rate Classifications

2-4.1.1 General

The DOT has established five rates within the two aircraft classes (mainline and bush), based on the classification of the aircraft operated:

1. Mainline.
2. Bush 121.
3. Short-runway bush 121.
4. Bush 135.
5. Bush seaplane.

Each rate has a terminal handling and linehaul component.

The Postal Service pays the origin air carrier the appropriate rate for terminal handling and linehaul to the hub point or final destination. The Postal Service pays the interline air carrier the designated rate for terminal handling and linehaul from the hub point to the final destination. The mileage for the linehaul rate is the great circle statute miles from origin to destination.

See Appendix C for a list of hub points and associated bush points.

2-4.1.2 Mainline Class Rate

The mainline class rate is designated for aircraft having a payload capacity exceeding 7,500 pounds.

2-4.1.3 Bush Class Rates

The bush class rates are designated for aircraft having a payload capacity up to and including 7,500 pounds.

2-4.1.3.1 Bush 121 Rate

This rate is designated for bush aircraft authorized to operate under FAA Part 121 regulations.

2-4.1.3.2 Short-runway Bush 121 Rate

This rate is designated for bush aircraft, such as Twin Otters, authorized to operate under FAA Part 121 regulations to serve bush points with runways that will not accommodate other 121 aircraft.

2-4.1.3.3 Bush 135 Rate

This rate is designated for aircraft authorized to operate under FAA Part 135 regulations.

2-4.1.3.4 Bush Seaplane Rate

This rate is designated for aircraft used where only water landings are available.