T.F. Green Airport Improvement Program - FEIS Chapters - PVD

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) EvaluationFigure 4-37 shows the existing lighting and navigation aids at T.F. Green Airport, which include:• Rotating beacon• Taxiway edge and centerline lights (all taxiways have edge lights; Taxiway V has centerline lights)• Runway Touchdown Zone (TDZ) Lights (Runway 5)• Runway edge and centerline lights (Runway 5/23 and 16/34 have edge lights; Runway 5/23 has centerline)• Runway threshold lights (Runways 5/23 and 16/34)• Runway End identifier lights (REIL) (Runway 16/34)• Visual approach slope indicators (VASI) (Runways 16, 23, and 34)• High intensity runway lights (HIRL) (Runways 5/23 and 16/34)• Medium-Intensity Approach Lighting System with Runway Alignment Indicator (MALSR) (Runways 23and 34) /Approach Light System with Sequenced Flashing Lights (ALSF) (Runway 5)• Lighted runway and taxiway signs (all runways and taxiways)• Obstruction lights• Aircraft ramp/apron floodlights• Terminal building lights• Parking lot and access road lightingRunway edge lights are used to outline edges of runways during periods of darkness or restricted visibilityconditions. The runway edge lights are white, except on the last 2,000 feet of instrument approach runways,where they are amber, indicating the touchdown zone (TDZ) during night or adverse weather. All runways areoutfitted with HIRL.Runway centerline lights indicate the location of the runway centerline during night or adverse weather.Runway 5 has TDZ lights, which include two rows of transverse light bars located symmetrically about therunway centerline, at 100-foot intervals, extending 3,000 feet along the runway. Runway 5 is equipped with aCategory II/Category III (CAT II/CAT III), Approach Light System with Sequenced Flashing Lights (ALSF-II).The ALSF-II is a high intensity approach light system with sequenced flashing lights that extends 2,400 feetfrom the end of the runway and up at a two percent slope.Runway Ends 23 and 34 are outfitted with a MALSR, which provides visual guidance to approaching aircraftduring poor weather conditions, and at night, by clearly indicating the location of the runway. The MALSR iscomprised of steady-burning white lights on top of seven stations (poles) located along the extended runwaycenterline covering a total distance of 2,400 feet in length; each station is separated by 200 feet. Each stationconsists of five 150W flood lights directed outward and upward away from the runway end. At the fifth stationthere are additional stations, one on either side of the centerline stations. In addition to the steady-burninglights, there are also Runway Alignment Indicator lights (RAILS), which are sequenced flashing lights locatedon top of the five outermost stations. The sequenced flashing lights improve a pilot’s ability to see the ApproachLighting System (ALS) when there are distracting lights in the Airport vicinity. The Runway 16 End does nothave approach lighting.Chapter 4 – Affected Environment 4-84 July 2011\\mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH04_Affected_Env_JUL_2011.doc