The comment period on a proposal to continue the reservation and slot program under the high-density rule at New York La Guardia Airport (LGA) closes December 29. The program, which includes a slot-reservation system for general aviation operations (six slots are available per hour between 6:30 a.m. and 10 p.m.), is currently set to expire on January 1. Under the proposal, the FAA would withdraw operating authorization from a carrier if its annual “average seat size” does not meet La Guardia’s airport-wide target of between 105 and 122 seats.