The Modular Concept
The Research Engineers PAPI with its modular design is unique. Interchangeable pre-aligned projectors can be easily fitted to the precision machined base for both fixed and portable applications.

• Interchangeable Projectors – Individual projectors are fully interchangeable, simplifying maintenance and spares management.
• Field Maintenance – With no need for realignment, projectors can be replaced in the field in seconds. All servicing is done in the ideal conditions of the workshop.
• Stable Reference – Projectors are mounted on a precision machined aluminium base plate which has integral clinometer reference pads. This rigid unit is the base that is adjusted for cross level and elevation. Subsequent replacement of pre-aligned projectors does not require base readjustment, the unit retaining its correct settings.
• Compact Size – Large enough to provide optical precision but small enough to minimise the effect of jet blast. Easy storage and handling.
• Instant Projector Change – Quick release fasteners are used. No need for any special tools or realignment.
• Corrosion Resistance – All projectors are manufactured from anodised light alloy. All fasteners are stainless steel.
• Compatible – Research Engineers halogen and LED PAPI projectors use the same base plates and legs as are manufactured from anodised light alloy. All fasteners are stainless steel.