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Sophisticated avionics systems now allow routine aircraft operations in extreme low visibility conditions. It is therefore of importance that Aircraft Rescue and Fire Fighting (ARFF) services be able to respond to emergencies in such conditions. The Dri

U.S. Department
of Transportation

Federal Aviation
Administration

Advisory
Circular


Subject: MAINTENANCE OF AIRPORT VISUAL AID
FACILITIES

Date: 4/4/2005
Initiated by: AAS-100


AC No: 150/5340-26A
Change:

1. PURPOSE.

This Advisory Circular (AC) provides recommended guidelines for maintenance of airport visual
aid facilities.

2. APPLICABILITY.

The standards and practices contained in this AC are recommended by the Federal
Aviation Administration (FAA) for use by airports in the maintenance of airport owned lighted visual aid facilities.

3. CANCELLATION.

AC 150/5340-26 Maintenance of Airport Visual Aid Facilities, dated August 26, 1982, is
cancelled.

4. PRINCIPAL
CHANGES.
a. Safety procedures and potential hazards from series circuits have been expanded and clarified.
b. Maintenance management has been updated and expanded to cover use of Original Equipment
Manufacturer Parts.
c. Electrical test equipment has been updated to provide information on current types of testing
equipment.
d. Preventive maintenance has been revised to include procedures for more recently designed light
fixtures and requirements/recommendations for photometric testing of runway lighting systems.
e. Added sections on airfield lighted guidance signs, Precision Approach Path Indicator (PAPI) and
airport lighting control and monitoring systems (ALCMS).
f. Deleted section on marking of paved areas on airports.
g. Expanded section on troubleshooting of airport lighting series circuits.
h. Added maintenance tolerances in Appendix A for elevated and in-pavement runway guard lights, stop
bar lights, CAT III taxiway centerline lighting and PAPI.







DAVID L. BENNETT
Director of Airport Safety and Standards
AC 150/5340-26A
4/4/2005























Intentionally Left Blank

4/4/2005
AC 150/5340-26A
TABLE OF CONTENTS
CHAPTER 1. INTRODUCTION..............................................................................................................................1

1.0 GENERAL. ...................................................................................................................................................1

1.1 SCOPE.
...................................................................................................................................................1

CHAPTER 2. SAFETY. ...........................................................................................................................................3

2.0 GENERAL. ...................................................................................................................................................3

2.1 COMMON CAUSES OF ACCIDENTS............................................................................................................3

2.2 SAFETY PROCEDURES AND GUIDELINES................................................................................................3

2.3 ELECTRICAL HAZARDS OF SERIES LIGHTING CIRCUITS. ...................................................................3

2.4 SAFETY PRACTICES. .....................................................................................................................................5

2.5 SAFETY BOARDS............................................................................................................................................6

2.6 SAFETY CHECKLIST. .....................................................................................................................................7

2.7 SAFETY EQUIPMENT IN VEHICLES. ..........................................................................................................7

2.8 ELECTRIC SHOCK. .........................................................................................................................................7

2.9 SAFETY TRAINING.........................................................................................................................................8

2.10 SAFETY WARNING SIGNS/DANGER TAGS. ............................................................................................8

2.11 GROUNDING AND BONDING.....................................................................................................................9

2.12 CONFINED SPACES. .....................................................................................................................................9

2.13 LIGHTNING. ...................................................................................................................................................9

2.14 TOXIC AGENTS. ..........................................................................................................................................10

2.15 FIRE EXTINGUISHERS...............................................................................................................................11

2.16 FIRST AID. .................................................................................................................................................13

CHAPTER 3. MAINTENANCE MANAGEMENT..............................................................................................15

3.0 MAINTENANCE PHILOSOPHY. ..................................................................................................................15

3.1 MAINTENANCE SCHEDULE. ......................................................................................................................15

3.2 MAINTENANCE RECORDS. ........................................................................................................................15

3.3 PREVENTIVE MAINTENANCE PROGRAM...............................................................................................16

3.4 RECORD RETENTION. .................................................................................................................................17

3.5 REFERENCE LIBRARY.................................................................................................................................17

3.6 SPARE PART PROVISIONING. ....................................................................................................................17

CHAPTER 4. TEST EQUIPMENT........................................................................................................................21

4.0 INTRODUCTION............................................................................................................................................21

4.1 TYPES OF EQUIPMENT AND USAGE........................................................................................................21

CHAPTER 5. PREVENTIVE MAINTENANCE..................................................................................................27

5.0 GENERAL. .................................................................................................................................................27

5.1 AIRPORT LIGHTING VAULT. .....................................................................................................................27

5.2 CONSTANT CURRENT REGULATORS (CCRs).........................................................................................32

5.3 LIGHT FIXTURE AND BASE MAINTENANCE. ........................................................................................36

5.4 ILLUMINATED RUNWAY AND TAXIWAY GUIDANCE SIGNS............................................................46

5.5 ROTATING BEACONS. ................................................................................................................................46

5.6 LIGHTED WIND CONE ASSEMBLIES.......................................................................................................49

5.7 PRECISION APPROACH PATH INDICATOR (PAPI) SYSTEM................................................................51

5.8 VISUAL APPROACH SLOPE INDICATOR (VASI). ...................................................................................54

5.9 RUNWAY END IDENTIFIER LIGHTS (REILs)...........................................................................................56

5.10 MEDIUM APPROACH LIGHTING SYSTEM (MALS, MALSF, MALSR)...............................................60

5.11 HAZARD BEACONS AND OBSTRUCTION LIGHTS. .............................................................................62

5.12 AIRPORT LIGHTING CONTROL AND MONITORING SYSTEMS (ALCMS).......................................64

5.13 STANDBY AND EMERGENCY POWER SYSTEMS................................................................................65


i AC 150/5340-26A
4/4/2005
CHAPTER 6. T