Morristown Airport Statement regarding JSX service at Morristown Airport (MMU)
After careful consideration, JSX has discontinued service at Morristown Airport (KMMU), operated by DM AIRPORTS, LTD. (DM), as of January 7, 2025.
Though several factors led to this suspension of service, the ultimate decision is related to the ongoing, multi-year Runway 5/23 Rehabilitation Project at MMU. Phase X of the project was completed in November 2024 and included adjustments to the localizer antenna. The localizer is a component of the Instrument Landing System (ILS). An ILS provides capability for instrument approaches to airports for aircraft to use during inclement weather. The MMU ILS is one of several instrument approaches available to aircraft operating at MMU. At this time, the localizer antenna is not yet operational, so the ILS has not been restored to service. The FAA, DM, and airport engineers are working diligently to return this equipment to service as soon as possible. Until the ILS is operational, JSX’s planes needed to be diverted to alternate airports during inclement weather and at nighttime.
The vast majority of aircraft operating into MMU can utilize other available instrument approaches because they operate under a different set of flight rules than JSX.
The ILS localizer upgrade is part of the progress MMU has been making in modernizing the airport through multiple phases of the Runway 5-23 Rehabilitation Project. Last year, the runway project phase at MMU included the installation of upgraded navigational equipment, a new paved surface on a portion of Runway 5-23, enhancement to safety areas, and some lighting upgrades. The Runway 5-23 Rehabilitation Project is being conducted in phases with the overall project tentatively scheduled to be complete by 2030.