FAR 91.323 — Alaska Weight Increases
FAR 91.323 explains how the FAA approves increased maximum certificated weights for certain airplanes operated in Alaska, including the limits and who qualifies.
FAR 91.323 allows the FAA Administrator to approve an increased maximum certificated weight for certain older airplanes — specifically those type certificated under Aeronautics Bulletin No. 7-A (1931) or the normal category of former CAR Part 4a — when operated in Alaska.
This exception only applies to:
- Part 121 or Part 135 certificate holders operating in Alaska, or
- The U.S. Department of the Interior, when conducting game and fish law enforcement, land management, or fire detection/suppression activities on public lands.
The approved weight increase is capped. It may not exceed any of the following:
- 12,500 pounds;
- 115% of the maximum weight listed in the FAA aircraft specifications;
- The weight at which the airplane meets the positive maneuvering load factor formula n = 2.1 + (24,000 / (W + 10,000)), where n need not exceed 3.8; or
- The weight at which the airplane still meets its type-certificated climb performance requirements.
When evaluating the request, the Administrator considers the airplane's structural soundness and the terrain to be flown over. The approved weight is then added to the airplane's operating limitations and labeled as the maximum weight authorized for operations within Alaska. This rule recognizes the unique demands of bush and remote operations where heavier loads are often operationally necessary.