Centerline Lights and Markings

FlyDutchman said:
Yup, it's stated in the legend I believe. Shorter and the runway is still depicted in a circle, longer and it becomes an outline of the runway. You only need one runway going over 8,069' to have all runway surfaces outlined.
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I think you can even have all runways shorter than 8069 if the runway complex is big enough that it doesn't fit in the circle.
 
AC 150-5340-30E said:
3.3. CONFIGURATION.
a.
Runway Centerline Lighting.
(1)
Location. The runway centerline lights are located along the runway centerline at 50 foot (15 m) longitudinal intervals. See Figure 33 for runway centerline lighting layout. The line of runway centerline lights may be uniformly offset laterally to the same side of the physical runway centerline a maximum of 2.5 feet (0.8 m) measured from the physical runway centerline to the fixture centerline. For any new runway, the light base installation must be no closer than 2 feet (0.6 m) (measured to the edge of the fixture base) to any pavement joints. Runway extensions of existing runways must use the convention already established for that runway. See Section 4.3 and Figure 45 for additional information about the taxiway centerline lighting location requirements related to runway centerline lights for major taxiway turnoffs. See AC 150/5340-1, Standards for Airport Markings, for additional information about runway centerline marking widths and location.
(2)
Color Coding. The last 3,000-foot (900 m) portion of the runway centerline lighting system is color coded to warn pilots of the impending runway end. Alternating red and white lights are installed, starting with red, as seen from 3,000 feet (900 m) to 1,000 feet (300 m) from the runway end, and red lights are installed in the last 1,000 foot (300 m) portion.
(3)
Displaced Threshold. On runways having centerline lights, the centerline lights are extended into the displaced threshold area. If the displaced area is less than 700 feet (110 m) in length, the centerline lights are blanked out in the approach direction. For displaced threshold areas over 700 feet (110 m) in length, the centerline lights in the displaced area are circuited separately from the centerline lights in the non-displaced runway area to permit turning "off" the centerline lights in the displaced area during landing operations. If the displaced threshold area also contains a medium intensity approach light system, the control of the approach lights and displaced threshold area centerline lights is interlocked to ensure that when the approach lights are "on", the displaced area centerline lights are "off", and vice versa. If the displaced threshold area contains a high intensity approach lighting system, separate circuiting of the
centerline lights in the displaced area is not required since the high intensity approach lights will "wash out" the centerline lights.
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Straight from the horse's mouth.
 
N519AT said:
Seems like one of those useless questions that a DPE likes to ask just to show that they know more than you do. Like what is the runway length required for an an airport to no longer be contained in a sectional. Yes, I got asked that on a checkride once.
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Funny thing, he is a DPE.
 
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