A Locator Outer Marker, or LOM, is a navigation aid used as part of an ILS instrument approach for aircraft in the United States. The LOM combines the outer marker beacon in the ILS approach with an NDB, so that aircraft can navigate directly to the location using the NDB as well as be alerted when they fly over it by the beacon. The LOM is becoming less important now that GPS navigation is well established in the aviation community. Canada has taken the process further and abandoned marker beacons altogether, replacing the outer marker in ILS approaches entirely with the NDB. The Instrument Landing System (ILS) is an instrument approach system for landing in instrument meteorological conditions. ... An aircraft is any machine capable of atmospheric flight. ... A Non-directional Beacon, or NDB, is a radio broadcast station in a known location, used as a navigational aid by aircraft pilots. ... Over fifty GPS satellites such as this NAVSTAR have been launched since 1978. ...
A locator (LOC) transmitter is located at the far-end of the runway, and indicates the aircraft's deviation to the left or right of the centerline of the runway.
Marker Beacons Outermarker : Situated on the same line with the localiser and the runway centerline, four to seven miles before the runway.
This is shown for the pilot by blinking the blue outermarker light of the receiver, and by a continuous series of audio tone morse-code 'dashes' in his headset.
A LocatorOuterMarker, or LOM, is a navigation aid used as part of an ILS instrument approach for aircraft in the United States.
The LOM combines the outermarker beacon in the ILS approach with an NDB, so that aircraft can navigate directly to the location using the NDB as well as be alerted when they fly over it by the beacon.
Canada has taken the process further and abandoned marker beacons altogether, replacing the outermarker in ILS approaches entirely with the NDB.
Feeds |
Contact