Precision Approach Path Indicator (PAPI)
4Pages

Precision Approach Path Indicator (PAPI) Type SPL Compliance with Standards FAA: L-880/1 specification AC 150/5345-28 (current edition) ICAO: Annex 14, Volume I, para. 5.3 Uses PAPI and APAPI systems provide pilot information enabling him to carry out the visual approach procedure with the utmost accuracy and safety. Features and Customers Benefits • New genuine PAPI unit utilising modern lamps already used in F-range inset lights, • Very high wind resistance in the landing direction thanks to its very small shape, • One optical channel consisting of only 2 lenses and 1 filter providing a very sharp transition from red to white over the full beam width, • Stable mounting on just 2 mounting legs featuring easy levelling, • Greatly reduced installation and levelling time with dedicated jig and instruments, • Hardware used for fine-tuning of the beam elevation is removable and can be stored in a protected place for further use, • Colorimetric conformity maintained over the whole width of the red beam, • Lens protected from sandblasting by a hardened front glass, Distortion free, all aluminium construction yet featuring frangible mounting legs, • Long focal length makes adjustment in elevation easy, accurate and stable, • Reduced maintenance. The unit is fully gasketed ensuring a clean interior, • Relamping and replacement of filter does not require any tool, • Condensation water is drained away, • No water can accumulate on the cover, so reflections that could constitute a false optical signal are eliminated, • Fully corrosion proof since only aluminium, stainless steel hardware and optical glass are used, • Tilt switch and heating option available upon request.

Construction (Fig. 4) 1. Cover 2. Front glass 3. Front glass gasket 4. Outer lens + clamping ring 5. Inner lens + clamping ring 6. Red filter 7. Filter retainer a. Prefocus cold mirror halogen lamp (3) 8 b. Fixing holding spring 8 9. Terminal block with cut-out 0. Heat resistant wire 1 2. Lockable latch 1 3. Aluminium alloy housing 1 4. Compression bushing (1, 2 or 3) or (optional) nipple for flexible conduit 1 (1, 2 or 3) 6. Upper flange 1 17. Levelling plate 8. Lower flange 1 9. Mounting leg with frangible groove 1 0. Ground mounting flange 2 1. Anchor bolts (6) (optional) 2 Finish...

Installation It is recommended that each unit is installed on a solid well-levelled concrete foundation. Special care should be taken if the subsoil is known to be unreliable. The PAPI units are installed on height adjustable frangible mounting legs with bottom flanges secured on the concrete foundation. The removable setting device allows for a secure and easy levelling. The PAPI shall be installed as close as possible to the ground. The isolating transformers can be installed in a pit adjacent to or combined with the concrete slab, the pit being either in masonry or a L-867 steel...

Ordering Code SPL 1 S 1 000000 PAPI type: SPL Number of cable assemblies 1 2 3 Power supply Series = S Parallel* = P Heating Without = 0 With = 1 Special requirements to be specified in full text. Accessories Case with levelling instruments Adaptation kit for helipad applications Anchor bolts (per piece) Tilt switch Main spares Prefocus lamp Red Filter Cut-out (sold per 10) * Please contact ADB for this execution The PAPI unit shall meet or exceed the performance specified by ICAO, Annex 14, Vol. I, para. 5.3 and shall (with tilt switch option) be in compliance with FAA L-880/1...