pointSixtyFive

OUTER MARKER

Pilot/Controller Glossary with JO 7110.65BB, Change 3, effective July 9, 2026 · Official text on faa.gov

A marker beacon at or near the glideslope intercept altitude of an ILS approach. It is keyed to transmit two dashes per second on a 400 Hz tone, which is received aurally and visually by compatible airborne equipment. The OM is normally located four to seven miles from the runway threshold on the extended centerline of the runway.

See INSTRUMENT LANDING SYSTEM (ILS); MARKER BEACON.

Refer to AIM.

In the 7110.65

Used in 8 paragraphs of JO 7110.65BB.

  1. 2-1-25Wheels Down Check
  2. 2-3-10Control Symbology
  3. 3-7-5Precision Approach Critical Area
  4. 4-6-8ILS Protection/Critical Areas
  5. 5-9-5Approach Separation Responsibility
  6. 6-7-2Approach Sequence
  7. 6-7-4Level Flight Restriction
  8. 13-1-8Recording of Control Data