Instruction manual

AM.11.100e edition 1.4
Chapter 3: Maintenance 21
Workshop maintenance and preventive maintenance
The light assemblies can be serviced in the field, but it is recommended to limit
field maintenance to cleaning the lens. It is recommended to replace the inset
lights at regular intervals and to have them overhauled in the maintenance shop.
The same applies to lights found unserviceable in the field.
No specific tools are required to remove or re-install the fittings, except for the
lifting tool (see page 23).
The assembly's service life depends to a large extent on its waterproofness. All
metal mating surfaces and seals must be clean, smooth, dry and free of all foreign
particles if the light fixture is to operate for extended periods without requiring
maintenance.
Greasing of O-ring seals may be required as indicated in this manual.
Preventive maintenance of the light fixtures should be performed as listed in the
table on the next page.
Maintenance frequency depends on the conditions under which the runway is used
(i.e. climate, traffic, etc.). The recommended practices for maintenance are
described in the FAA advisory circular no. AC 150/5340-26 and in the ICAO
Aerodrome Design Manual, Part 9 Airport Maintenance Practices.
For components mentioned in this chapter, refer to the exploded view on page 45.
In the field
maintenance
Preventive
maintenance