FAA L-861
FAA L-861 – Medium intensity runway edge lighting (MIRL), displaced threshold lights for non- precision Instrument Flight Rules (IFR) runways
Omnidirectional: White, yellow
Bidirectional: White-yellow, white-red, yellow-red, green-yellow
FAA L-861E – Low intensity runway threshold/end light, displaced threshold for non-precision IFR runways
Bidirectional: Red-green, red-red
Unidirectional: Green
FAA L-861SE – Runway threshold/end lights for non-precision IFR runways
Bidirectional: Red-green
Unidirectional: Green
FAA L-861T – Taxiway edge lights, apron edge lights
Omnidirectional: Blue
L-860 Runway Lights Beam Coverage, Colors and Intensity
| Type | Color | 2 to 10 Degrees | 10 to 15 Degrees |
| L-861 | White Yellow Green Red* | Minimum 75 ecd, minimum average intensity 125 ecd Minimum 37 ecd, minimum average intensity 67 ecd Minimum 28 ecd, minimum average intensity 46 ecd Minimum 3 ecd, minimum average intensity 5 ecd | Minimum 40 ecd Minimum 20 ecd Minimum 14 ecd Minimum 1 ecd |
| L-861T** | Blue | Minimum 2 ecd | Minimum 1 ecd |
*L-861 red is only 180 degrees of horizontal coverage for unidirectional and bidirectional.
**L-861T coverage is 2 candelas minimum from 0 to 6 degrees vertically and must be visible from 15 to 90 degrees vertical (verified visually) as projected.
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