![]() ![]() (vii) The touchdown zone or touchdown zone markings. (i) The approach light system, except that the pilot may not descend below 100 feet above the touchdown zone elevation using the approach lights as a reference unless the red terminating bars or the red side row bars are also distinctly visible and identifiable. (3) Except for a Category II or Category III approach where any necessary visual reference requirements are specified by the Administrator, at least one of the following visual references for the intended runway is distinctly visible and identifiable to the pilot: (2) The flight visibility is not less than the visibility prescribed in the standard instrument approach being used and (i) The approach light system, except that the pilot may not descend below 100 feet above the touchdown zone elevation using the approach lights as a reference unless the red terminating bars or the red side row bars are also distinctly visible and identifiable. (1) The aircraft is continuously in a position from which a descent to a landing on the intended runway can be made at a normal rate of descent using normal maneuvers, and for operations conducted under part 121 or part 135 unless that descent rate will allow touchdown to occur within the touchdown zone of the runway of intended landing Except as provided in paragraph (l) of this section or §91.176 of this chapter, where a DA/DH or MDA is applicable, no pilot may operate an aircraft, except a military aircraft of the United States, below the authorized MDA or continue an approach below the authorized DA/DH unless. That is also why if the approach lights are OOS, the visibilty must be at least 0.75 miles because you need to at least be able to see the threshold. At 200 feet, on a 3 degree slope, the threshold is just over 0.7 miles away, so without using the approach lights to descend lower, there is no way to see any of the other visual cues. The whole point of the approach lights is to provide guidance to the runway at minimum visibility or otherwise there would be no way to complete the approach under these conditions, particularly when the visibility at a DH is 1/2 mile. When there are no red terminating/side row bars, the exception to allow continuation below 100 feet above the the TDZE solely based on the approach lights does not apply, but you can continue if you see one of the other listed cues. You can still descend to 100 feet above the TDZE using approach light systems that do not have red terminating or side row bars, it is just that one can’t use the non existent red terminating/side row bars to continue below 100 feet above the TDZE. The most common approach lighting systems MALSR and MALSF systems don’t have any red terminating or side row bars. Red terminating bars or side row bars are only found on the ALSF-1 or ALSF-2. The approach lights are a visual cue, it is just that they can’t be used as a visual cue below 100 feet above the TDZE unless the Red terminating or side row bars are visible. Increase identification of lights by pilots in all weather conditions.I interpret it that it would apply to non precision, APV, and precision Category I approaches.Use LED light to obtain sharper colors (clear whites, greens and reds).Minimize the amount of hardware installed in the runway environment.Standardize and simplify the infrastructure by eliminating several obsolete systems and consolidating the infrastructure.Promote the use of Green Energy technology.Style B: Green, unidirectional (threshold) approach light (MULTI P/N 3950-2). It is built in accordance with FAA-E-2952, and is available in three styles: Style A: White, unidirectional approach light (MULTI P/N 3950-1). Increase availability of service by increasing reliability of approach lighting systems. for use in an approach lighting system with sequenced flashing lights (ALSF-2).Reduce product life-cycle costs of approach lighting systems.VGLS is focused on sustaining and supporting Performance Based Navigation (PBN) and national level Position, Navigation and Timing (PNT) goals. Enabling pilots to more effectively identify the runway environment, align with the runway centerline and achieve stable, wings-level attitude for landing. Visual Guidance Lighting Systems (VGLS) provides visual guidance to pilots during the approach and landing phases of flight. Recreational Flyers & Modeler Community-Based Organizations.Critical Infrastructure & Public Venues.Certificated Remote Pilots including Commercial Operators.Legislation & Policies, Regulations & Guidance.Data & Research Subnav: Data & Research 1.Airport Safety Information Video Series.Passenger Facility Charge (PFC) Program.Airport Coronavirus Response Grant Program.General Aviation & Recreational Aircraft.Vintage & Experimental Aircraft Program.Aviation Safety Draft Documents Open for Comment. ![]()
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