Location - ILS Transmitters. Provide separate facilities for glide
slope antenna transmitter equipment, for localizer antenna transmitter
equipment and for marker antenna equipment. Refer to FAA Order 6750.16,
Siting Criteria for Instrument Landing Systems and FAA AC 150/5300-13.
Structure. MLS and ILS transmitter equipment is provided in a
self-contained structure by the system supplier. Provide concrete foundations
to mount equipment structures. Ensure MLS and ILS structures are frangible.
Refer to FAA ER-530-81-04.
cables, beginning at a point 1,000 feet outside of the MLS and ILS facilities.
Locate electrical equipment which is not frangible, such as transformers,
outside the runway clear zone or primary surface. Ensure electrical systems
do not interfere with radio transmissions.
Emergency Electrical Power. MLS and ILS equipment is supplied with
backup battery power. No emergency generator is required.
18.104.22.168 Lighting. No site lighting is required.
Obstruction lighting is
provided with the equipment.
22.214.171.124 Site Work. Design site work to meet the criteria in FAA Order
6750.16 and par. 2.2.
126.96.36.199 Security. MLS and ILS facilities are normally located within the
airfield restricted area which would typically meet the minimum security
measures for external security. If the facility is located within a
restricted area of a lower level of security or is located remote and outside
of an established restricted area, additional measures will be required to
meet the minimum security requirements for the level of security assigned to
the facility. The level of security and the designer's responsibility for
particular security elements will be designated in the IDSEP. Refer to par.
188.8.131.52 Additional Design Criteria.
Refer to Section 2 for facility design
requirements not addressed above.
Precision Approach Landing System (PALS)/Precision Approach Radar
Function. The PALS and PAR buildings house radar systems used to
guide aircraft on final approach.