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4C H A P T E R 2 Regulatory Requirements Extensive guidance has been written for the proper installation and maintenance of AGL sys- tems. In additional to local codes and ordinances, this work is subject to regulations outlined in the National Electric Code (NEC) and several forms of FAA-published material. The FAA has created ACs to help specify the manufacture, installation, and maintenance of airfield equipment. Additionally, the FAA issues Orders and Standards that outline requirements that must be met to obtain acceptance from the FAA. Further, when discussing AGL systems on military airfields, the Uniform Facility Code (UFC) must be observed. Internationally, these systems must conform to International Civil Aviation Organization (ICAO) standards. A list of pertinent FAA resources is available in References and Bibliography. A selection of the most pertinent resources includes ⢠AC 150/5340-30, Design and Installation Details for Airport Visual Aids ⢠AC 150/5340-26, Maintenance of Airport Visual Aid Facilities ⢠Engineering Brief 67D, Light Sources Other than Incandescent and Xenon for Airport and Obstruction Lighting Fixtures ⢠AC 150/5345-46, Specification for Runway and Taxiway Light Fixtures Surveys and Case Studies To further understand the effect of LED lighting on airfield lighting, the research team surveyed 44 different airports of varying sizes and in different geographic regions. Responses from these airports to questions about installation, operation, and maintenance of LED lights provided a basis for further understanding of LED lighting operations and maintenance (O&M) practices. Figure 2 shows the locations and sizes of the airports that participated in the survey. The research team carefully selected the airports to represent a cross section of the industry, considering airport size, climate, and aircraft type mix. This resulted in a broad perspective of the use and maintenance of LED AGL. Through diligent investigation, over 92% of airports requested provided data that helped to hone the research. After collecting and interpreting the survey responses, the research team conducted extended case study interviews. These 2- to 8-hour interviews expanded on the questions in the survey and allowed for an open forum where maintenance personnel shared their experiences maintaining and operating this equipment. In total, 10 airports participated in the case study interview. These discussions revealed specific best practices in use and enabled the research team to isolate 11 spe- cific representative elements as areas requiring additional discussion and understanding. These topics are categorized into maintenance and operations considerations, Chapter 3 and Chapter 4. The findings and best practices outlined in the following sections are a summary of data collected Guidelines and Research
Guidelines and Research 5 Figure 2. Airports selected for LED lighting survey. from subject matter experts within airport maintenance and operations personnel, manufacturers, and the design community. The research team have summarized and presented results for many of the key survey questions throughout this document. Charts illustrate many of those findings and include the related survey question for each. Data shown represents the total responses from all airfields in the survey. The contractorâs final report includes a list of the airports surveyed, the survey questionnaire, survey responses, and case studies. Charts illustrating the responses to two key survey questions are shown in Figures 3 and 4. These figures illustrate that LED technology is far from ubiquitous; however, most airports have expe- rience working with these systems. Additionally, many airports have had these systems in place for over 5 years, so the merits of LED longevity can begin to be evaluated. Figure 5 presents the LED lighting systems in use at the surveyed airports.
WHAT TYPES OF LED LIGHT FIXTURES DO YOU CURRENTLY HAVE INSTALLED ON YOUR AIRFIELD? Figure 5. Percentage of each type of fixture that are LEDs, in use at airfields. WHAT PERCENTAGE OF YOUR AIRFIELD UTILIZES LED LIGHTING? Figure 3. Percentage of surveyed airfields using LED lighting. HOW LONG HAVE YOU EMPLOYED LED LIGHT FIXTURES ON YOUR AIRFIELD? Figure 4. Duration that LED lighting has been used on airfields.
