back course


Also found in: Acronyms.

back course

[′bak ‚kȯrs]
(navigation)
In the instrument low-approach system, the course which extends from the back of a localizer antenna system to furnish guidance in the horizontal plane at the rear of the localizer.

back course

back courseclick for a larger image
The course line along the extended centerline of a runway in the opposite direction to the front course, or the localizer course for an ILS (instrument landing system). For an aircraft to approach the instrument runway from the end on which the localizer antenna is installed, the back course must be flown. A localizer back course is shown as on aeronautical charts. The sector located on the opposite side of the localizer from the runway is called the back course sector.
References in periodicals archive ?
1 miles out, the difference is negligible, so the localizer back course and the transition course are the same--351 degrees.
Some localizers also provide a localizer back course signal, which permits the design of a non-precision (no vertical guidance) approaches to the non-ILS runway end; most new ILS do not provide a BC.
The departure route description for 16L mentions a climbing right turn to heading 174 to intercept the localizer on the back course of 16R to Wagge intersection.
The route was the same every day on an out and back course, easy for logistics and nice so that you could see all the runners, be they ahead or behind.
Splash <Bof Ginge is bidding for back to back course wins in the Steel Plate and Sections Novices' Chase
You'll have to practice your ADF corrections, or your back course flying, to stay on course.
An out and back course, after playing the 11th you turn for home and the wind can often be the biggest factor, as all who have played links golf know.
in Auburn and holds the record for the old back course at Juniper Hill in Northboro.
Winning the ladies race in Rugby RCC's open time trial, she hit top form to power round the ten mile out and back course on the A45 with an average speed of 25.
The run is an out and back course from Mean Lane to Healey House, using the new cycle route.
You state in Rule #3, "If you are inbound on the back course or outbound on the front course, the shaded part of the feather is on your left, so you correct by steering away from the CDI.
The third race in the series will be held on an out and back course from the Stray Cafe at Redcar to Bydales School and back twice, starting at 11am on Sunday, November 24.