Final answer:
The recommended communication procedure for landing at a Lincoln municipal airport when the tower is closed is to use the designated CTAF to broadcast one's position and intentions, following standard traffic pattern announcements.
Step-by-step explanation:
The recommended communications procedure for landing at a Lincoln municipal airport during hours when the tower is not in operation involves using the Common Traffic Advisory Frequency (CTAF). Pilots should broadcast their position and intentions on the designated CTAF, providing other pilots with their location, direction, and any other relevant information to safely coordinate the use of runways and airspace. For specific CTAF frequencies and airport operations, refer to the airport's published directories and information sources. Procedures typically include announcing when entering the traffic pattern, downwind leg, base leg, final approach, and when on the runway. It is important to continuously monitor the CTAF and be aware of other traffic in the area, maintaining a vigilant lookout throughout the approach and landing process. When departing the runway, pilots should also announce clear of the active runway to inform other aircraft.