Thales 421, Operation And Maintenance, Page: 24 / 256

LLZ 421
General Operation and Maintenance
ILS 420
1−4
Ed. 01.04 SOAC
1.2.2 Personnel Requirements
Three persons are required to install the antenna and perform the related adjustments. The leader
of the installation team should be an engineer, technician or experienced master craftsman. Special
training and initiation by Thales are urgently recommended.
The fitters should be trained craftsman, for example mechanics, electricians or locksmiths.
The installation time for the antennas depends on preparations; for the 12 element antenna it will be
a minimum of 5 to 7 days, and for the wide−aperture antenna (21 elements) a minimum of 6 to 8 days
(calculation based on a working day of 8 hours). Additional times should be calculated for cabling
and other precision work.
1.2.3 Tools and Special Materials
The delivery list provided by Thales should be checked at as early a date as possible in order to iden-
tify materials not included in Thales ATM’s scope of delivery which may be essential for the infrastruc-
ture of the overall installation. For example, materials for grounding the ILS installation must be pro-
vided. Suggestions and instructions on correct grounding are contained in Chapter 2. The following
tools and equipment are the minimum required to unpack and assemble the LLZ equipment and the
LLZ antenna system:
1 crane truck, lifting capacity 1100 kg, min. jib reach 3 m, lifting height approx. 5 m
1 crowbar
1 hammer 1000 g
2 ratchets with sets of sockets
1 three−square scraper
1 inch ruler
1 tape measure (surveyor’s), if possible 150 m, otherwise 50 m
1 spirit level
2 ring/fork spanners, WAF 30 mm (for nuts of stone bolts)
1 through−feed cutter for cutting sheet metal
1 pipe cutter (for approx. 20 mm pipe diameter)
1 impact drill, min. power 600 W
1 theodolite
2 dip rods
1 set screwdrivers, blade width 3.5 mm to 8 mm
1 light metal files (flat 8 to10", medium cut)
various flat and round files
various hard metal drills
various twist drills for metalworking