LED Airfield Lighting System Operation and Maintenance (2015)

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66 This appendix is a reference guide for the minimum system requirements of the FAA under AC 150/5340-26 for all projects funded with federal grant monies through the Airport Improve- ment Program (AIP) and with revenue from the Passenger Facility Charges (PFC) Program. For in-depth information, AC 150/5340-26 has details regarding the maintenance of airfield lighting systems. The following tables are duplicated from AC 150/5430-26C and are included for reference. A P P E N D I X A System Requirements Parameter Standard Tolerance / Limit: Initial Tolerance / Limit: Operating 1. Light units operational a. Steady burning All All 15% lamps out (random) – 2 lamps out; in 5- light bar – 1 light bar out b. Flashing All All 1 unit out 2. Flashing rate 120 fpm ±2 fpm ±2 fpm a. Input voltage 120V or 240V ±3% ±5% 3. Light unit alignment a. Vertical Locally established ±1 degree ±2 degrees b. Horizontal Parallel to runway centerline ±1 degree ±2 degrees 4. Obstructions due to vegetation, etc. No obstruction Same as standard Same as standard Table A-1. AC 150/5340-26, Table A-2, medium-intensity approach light systems (MALS, MALSF, MALSR).

System Requirements 67 Parameter Standard Tolerance / Limit: Initial Tolerance / Limit: Operating 1. Light units operational All All 1 unit out 2. Input voltage 120V or 240V ±3% ±5% 3. Flashing rate 60 fpm ±2 fpm ±2 fpm 4. Light unit alignment Level ±1 degree ±2 degrees 5. Obstructions due to vegetation, etc. No obstruction Same as standard Same as standard Table A-2. AC 150/5340-26, Table A-3, omnidirectional approach light system (ODALS). Parameter Standard Tolerance / Limit: Initial Tolerance / Limit: Operating 1. Light units operational All All 1 unit out in 3-light cluster 2. Flashing rate Locally established ±2 fpm ±2 fpm 3. Input voltage 120V or 240V ±3% ±5% 4. Light unit alignment a. Vertical Locally established ±1 degree ±2 degrees b. Horizontal Locally established ±1 degree ±2 degrees 5. Obstructions due to vegetation, etc. No obstruction Same as standard Same as standard Table A-3. AC 150/5340-26, Table A-4, lead-in lights.

68 LED Airfield Lighting System Operation and Maintenance Parameter Standard Tolerance / Limit: Initial Tolerance / Limit: Operating 1. Light units operational All All All 2. Flashing rate a. Unidirectional type 120 fpm ±2 fpm ±2 fpm b. Omnidirectional type 60 fpm ±2 fpm ±2 fpm 3. Input voltage 120V or 240V ±3% ±5% 4. Alignment (unidirectional) a. Vertical (1) With baffles 3 degrees ±1 degree -1 degree +2 degrees (2) Without baffles 10 degrees ±1 degree ±2 degrees b. Horizontal ±1 degree ±2 degrees (1) With baffles 10 degrees ±1 degree ±2 degrees (2) Without baffles 15 degrees (away from runway centerline) ±1 degree ±2 degrees 5. Obstructions due to vegetation, etc. No obstruction Same as standard Same as standard Table A-4. AC 150/5340-26, Table A-5, runway end identifier lights (REILs).

System Requirements 69 Parameter Standard Tolerance / Limit: Initial Tolerance / Limit: Operating 1. Lamps burning a. VASI All All Not more than one lamp out per box b. SAVASI All All 2. Vertical aiming (VASI and SAVASI) a. Downwind bar (bar no. 1) ½ degree below established glide path angle ±2 minutes ±6 minutes b. Upwind bar (bar no. 2) Established glide path angle ±2 minutes ±6 minutes 3. Vertical aiming (3- bar VASI) a. Downwind bar (bar no. 1) 2.75 degrees ±2 minutes ±6 minutes b. Middle bar (bar no. 2) 3.0 degrees ±2 minutes ±6 minutes c. Upwind bar 3.25 degrees ±2 minutes ±6 minutes 4. Horizontal alignment Parallel to runway centerline ± ½ degree ± ½ degree 5. Tilt switch ¼ to ½ degree below and ½ to 1 degree above established light bar angle Same as standard Same as standard 6. Lamp current (current-regulated) Rated current of lamps Same as regulator currents for type of regulator used 7. Lamp voltage (voltage-regulated) Rated voltage of lamps ±3% ±5% 8. Obstructions due to vegetation, etc. Same as standard Same as standard Table A-5. AC 150/5340-26, Table A-6, visual approach slope indicator (VASI).

70 LED Airfield Lighting System Operation and Maintenance Parameter Standard Tolerance / Limit: Initial Tolerance / Limit: Operating 1. Lamps burning a. PAPI All All Not more than one lamp out per box 2. Vertical aiming 1 a. Unit D (close to runway) 3° 30’ ±2 minutes ±6 minutes b. Unit C (2nd from runway) 3° 10’ ±2 minutes ±6 minutes c. Unit B 2° 50’ ±2 minutes ±6 minutes d. Unit A (farthest from runway) 2° 30’ ±2 minutes ±6 minutes 3. Horizontal alignment Parallel to runway centerline ± ½ degree ± ½ degree 4. Tilt switch ¼ below to ½ degree above established light bar angle Same as standard Same as standard 5. Lamp current (current-regulated) Rated current of lamps Same as regulator currents for type of regulator used 6. Lamp voltage (voltage-regulated) Rated voltage of lamps ±3% ±5% 7. Obstructions due to vegetation, etc. No obstruction Same as standard Same as standard 1 Unless a different standard is established locally, angles shown are for a 3 degree glide path. Table A-6. AC 150/5340-26, Table A-7, precision approach path indicator (PAPI).

System Requirements 71 Parameter Standard Tolerance / Limit: Initial Tolerance / Limit: Operating 1. Runway lights a. Threshold lights All on All on 75% on for VFR and non- precision IFR runways b. End lights All on All on 75% on c. Edge lights All on All on 85% on except for CAT II and CAT III runways which require 95% serviceable d. Centerline lights All on All on 95% serviceable e. Touchdown Zone lights All on All on 90% serviceable 2. Taxiway lights a. Edge lights All on All on 85% on - see note 3 for CAT III taxi routes b. Centerline lights All on All on 90% on - see note 3 for CAT III taxi routes c. Elevated Runway Guard Lights All on All on No more than one light in a fixture unserviceable d. In-pavement runway guard lights All on All on No more than three lights per location unserviceable nor two adjacent lights unserviceable e. Runway stop bar lights All on All on No more than three lights per location unserviceable nor two adjacent lights unserviceable 3. Lamp current Amperes Amperes Amperes a. 3 step, 6.6A 6.6 5.5 4.8 6.50 - 6.70 5.40 - 5.60 4.80 - 4.90 Same as initial Same as initial Same as initial b. 5 step, 6.6A 6.6 5.2 4.1 3.4 2.8 6.50 - 6.70 5.10 – 5.30 3.98 - 4.22 3.30 - 3.50 2.70 - 2.90 Same as initial Same as initial Same as initial Same as initial Same as initial c. 5 step, 20A 20.0 15.8 12.4 10.3 8.5 19.70 - 20.30 15.50 - 16.10 12.10 - 12.70 10.00 - 10.60 8.20 – 8.80 Same as initial Same as initial Same as initial Same as initial Same as initial 4. Lamp voltage (parallel circuits) Lamp voltage rating ±3% ±5% Table A-7. AC 150/5340-26, Table A-8, runway and taxiway lighting systems.