Advisory
Circular
U.S. Department
of Transportation
Federal Aviation
Administration
Subject: SPECIFICATION FOR L-893, Date: 06/27/07 AC No.: 150/5345-55A
LIGHTED VISUAL AID TO
INDICATE TEMPORARY
Initiated by: AAS-100
Change:
RUNWAY CLOSURE
1. PURPOSE. This advisory circular (AC) provides guidance in the design of a lighted visual aid to
indicate temporary runway closure.
2. EFFECTIVE DATE. Effective 6 months after the date of this circular, only that equipment
qualified per this specification will be listed in AC 150/5345-53, Airport Lighting Equipment
Certification Program.
3. CANCELLATION. AC 150/5345-55, Lighted Visual Aid to Indicative Temporary Runway Closure,
dated 07/14/03, is cancelled.
4. APPLICATION. The standards contained herein are recommended by the FAA in all applications
involving airport development of this nature. The use of these standards is mandatory for airport projects
receiving Federal funds under the airport grant assistance program and those using funds under the
passenger facility charge (PFC) program.
5. BACKGROUND. There have been instances of aircraft landing on runways that are temporarily
closed for maintenance or snow removal operations. The likelihood of unintended landings increases
during periods of reduced visibility and at night whenever runway lighting must be on for electrical
maintenance or snow removal. The lighted visual aid is intended to eliminate ambiguity concerning the
status of the runway and to reduce instances of aircraft landing on temporarily closed runways. This AC
is based on FAA Technical Center report number DOT/FAA/CT-TN87/3. See Chapter 2 for information
on how to obtain the report.
6. PRINCIPAL CHANGES.
a. Added photometric requirements and testing.
b. Deleted 150W/120V type lamp.
c. All applicable documents and document sources have been updated.
7. METRIC UNITS. To promote an orderly transition to metric units, this AC contains both English
and metric dimensions. The metric conversions may not be exact metric equivalents and, until there is an
official changeover to the metric system, the English dimensions will govern.
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