How can you identify a Locator Outer Marker (LOM)?

The best method to identify a Locator Outer Marker (LOM) is by tuning the LOM frequency on the ADF (Automatic Direction Finder). A LOM is a type of marker beacon that is part of an instrument landing system (ILS) and provides an important reference point for pilots during the landing phase of flight. The LOM emits a specific radio signal that can be tuned in using the ADF equipment onboard the aircraft.

When the pilot tunes into the LOM’s frequency on the ADF, the airplane's navigation equipment will provide an indication of the LOM's location based on the strength and direction of the received signal. This allows the pilot to determine their distance from the marker and their alignment with the runway. The ADF is specifically designed to navigate using non-directional beacons and provides an accurate means of identifying the LOM's position.

Other methods such as using visual confirmation, tuning into the LOM frequency on the VOR (VHF Omnidirectional Range), or utilizing GPS coordinates are not effective or appropriate for identifying a LOM. Visual confirmation is typically not an option for LOMs, as they are low-power beacons not easily seen from the air, and VOR equipment does not detect marker beacons