outer marker


Also found in: Acronyms.

outer marker

[′au̇d·ər ′mär·kər]
(navigation)
That instrument landing system (ILS) marker farthest from the approach end of the instrument runway; the marker is located 4.5 miles ± 1000 feet (7240 ± 305 meters) from the end of the runway and not more than 250 feet (75 meters) from the extended center line of the runway.

outer marker

An ILS (instrument landing system) navigational facility in the terminal area navigation system located at 4 to 7 miles (6 to 11 km) from the runway edge on the extended centerline. It transmits a 75-MHz fan-shaped radiation pattern, modulated at 400 Hz (fan markers and station markers radiate at 3000 Hz, whereas middle markers do so at 1300 Hz), keyed at two dashes per second, and received by compatible airborne equipment. It indicates to the pilot, both aurally and visually, that he or she is passing over the facility and can begin the final approach. See instrument landing system.
References in periodicals archive ?
Pilots responded significantly slower to the onset when it occurred outside the outer marker (6.
Other pilots in the airport environment may have no knowledge of intersection names, approach fixes or outer markers.
Tenders are invited for Facility Management Contract Of E And M Installations Of Mssr, Wt Station And Outer Marker At Chennai Airport
Radar data associated with the accident aircraft shows it crossed the final approach course from the west between the initial approach fix and the outer marker.
2(a) says that when flying a precision approach, and not in radar contact, we need to report the outer marker or fix used in lieu of an outer marker.
Tenders are invited for Armo Of Various E And M Installations Of Terminal-1 Residential Colony Outer Marker Cisf Barrack And Solar Obstruction Lights For Hills At C.
It's actually the outer marker for the ILS into Boise.
5 miles from the outer marker, which is where well-trained Bonanza pilots put down the gear and start riding the ILS rails down to terra firma at 115 knots.
Tenders are invited for Annual Repair & maintenance civil work for NAV-AIDS Units Transmitting station at Andheri, Remote Receiving at Dahisar, Outer Marker at Vashi, Radio Range Juhu, Middle Marker Ghatkopar & VOR Karjat at Mumbai (2017 - 18)
Second, on a "short" approach with four miles to the outer marker and a 30-degree intercept at two miles from the gate, a five-degree localizer is about six-tenths of a mile wide, and at 30 degrees, you'd cross it at exactly half of your groundspeed.