UFC 3-535-01
17 November 2005
metallic, FAA-E-2702, Low Impact Resistant Structures, supports or triangular antenna
support type, FAA AC 150/5345-45, Lightweight Approach Light Structure.
3-5.10.2.3 Light heights more than 12 meters (40 feet) should use semi-frangible
supports. Individual SFL or 5-light barrettes must have the top 6 meters (20 feet) of the
support of the low-impact-resistant type installed on a rigid support of the correct height.
3-5.10.3
Mounting the Lights
In-pavement lights should be used only in displaced threshold areas or paved overruns.
These in-pavement lights must be mounted on corrosion-proof steel light bases set in a
concrete foundation. These lights may project not more than 0.025 meters (1 inch)
above the paved surface. The elevated lights are mounted at the correct height on
frangible, low-impact-resistant, or semi-frangible supports. Frangible supports are used
for heights of 2 meters (6 feet) or less. The support consists of a frangible coupling and
sections of 0.05 meters (2 inch) diameter conduit elbows set in concrete foundation. For
heights more than 2 meters (6 feet), the barrettes or individual SFL must be placed on
low impact-resistant or semi-frangible supports.
3-5.11
Compliance with International Standards
3-5.11.1
There are no equivalent ASCC or NATO standards for this system,
however, it does meet the requirements for a Category I approach approved by the
FAA.
3-6
RUNWAY END IDENTIFIER LIGHTS (REIL)
3-6.1
Purpose
The REIL provides the pilot with rapid and positive identification of the runway threshold
during approach for landing. The REIL assists the pilot in making landings in VFR
conditions and in non-precision instrument approaches in IFR conditions.
3-6.2
Associated Systems
The following visual aids are required with the use of the REIL: high intensity runway
edge lights, runway threshold lights or displaced threshold lights, and runway markings.
The PAPI system may also be an associated visual aid.
3-6.3
Configuration/Location/Aiming
A REIL system, as shown in Figure 3-11, consists of synchronized flashing lights placed
symmetrically about the runway centerline in the vicinity of the runway threshold. The
optimum location is 12 meters (40 feet) from the runway edge and in line with the
threshold lights. The lights may be located laterally up to 22.5 meters (75 feet) from the
runway edge and longitudinally up to 12 meters (40 feet) downwind (away from the
runway) from the threshold lights to 27 meters (90 feet) upwind. Adjust the location of
both lights as equally as possible to maintain the symmetry of the installation. The
difference in locations must not be more than 3 meters (10 feet) laterally or
longitudinally. The elevation of both lights must be within 3 meters (10 feet) of the
runway centerline at the threshold. Do not install REILs on runways served by Pulsed
36
Previous Page
