Page 201 2
nd
Edition – Rev 0
33-20
EXTERNAL LIGHTS – MAINTENANCE PRACTICE
1. TAXI AND LANDING LIGHT REPLACEMENT
Additional info &
References
Make sure Master Switches are turned off
Unfasten the lamp assy electrical terminals
Remove lamp assy: remove the four adjusting screw
and springs and related washers supporting the assy
Remove the four rivets which hold the flangea
together
Separate the lamp unit from the flanges
Set up again the lamp assy as removed: place the new
lamp unit between the FWD and AFT flange and
install the rivets
Insert adjusting screws, washers and springs in the
lamp assy and put it in position. Screw fittings.
Fasten electrical terminals
Adjust map assy. Adjusting screws and springs allow
for orientating the light path as required
2. WINGTIP NAV AND STROBE LIGHTS ASSY REPLACEMENT
Additional info &
References
Make sure Master Switches are turned off
Unscrew the retaining screw (11). Remove retainer
(10) and lenses (9 and 6) with the gasket (5)
Remove the three screws which fix the base
plate to the wingtip. Record bonding cable position
Bonding cable is placed between the
wingtip and the base plate and it
engages a base plate fixing screw.
Remove the base plate (1) disengaging both
electrical connectors
Replace flashtube assy (8) as required
Engage both electrical connectors and place in
position the bonding cable
Install the base plate (1), insert the three screws
into the base plate holes and tighten firmly.
Place in position lenses (9 and 6) with the gasket (5)
Put in position the retainer (10) and fasten the
retaining screw (11).