The ALS Helicopter Approach Path Indicator is a unit showing four signals. Indicators show “above slope”, “on slope”, “slightly below” and “below” signal for the pilot.
The HAPI unit produces a series of coloured signals based on the approach angle of the Helicopter. It will be Flashing Green or Red or Solid Green and Red depending on the angle.
Sector | Format |
---|---|
Above | Flashing Green |
On Slope | Green |
Slightly Below | Red |
Below | Flashing Red |

Compliance
- International Civil Aviation Organization, Aerodromes, Annex 14, Volume 2, Fourth Edition, July 2013
- Photometric – (ICAO) Figure 5-11 and 5-15
- Chromaticity – Section 5.3.5.30
Features
- Designed and built with simplicity and ease of maintenance in mind
- LED technology
- Lightweight, low-energy and environment friendly lighting fitting
- Extensive use of aluminium alloys reduces fitting weight and eases handling in the field
- Housing powder-coated aluminium, RAL 1004 (aviation yellow)
- Anti-glare visor powder-coated aluminium, RAL 9005 (gloss black)
- Diffuser hardened front glass for sandblast protection
- Cable gland nickel-plated brass
- Fastening system powder-coated aluminium, RAL 1004 (aviation yellow)
Technical Characteristics
- Power consumption max. 50W
- 48 LED’s (24 Red and 24 x White)
- Power supply 110/230V AC from mains
Connecting to a 110/230V AC supply:
- The 110/230V AC LED APAPI is supplied with a 3-core (3 x 1.0 mm2) 1 m flying lead
- The overall diameter of the cable is nominally 7.5 mm.
- Connect the free ends of the cable to the proper voltage source
Codes & Accessories
Type | Code | Image |
---|---|---|
HAPI Code | AL 117-48-GR/RE | ![]() |
Clinometer Accessory | AL-115-AX | ![]() |
Dimensions
- Length: 583mm
- Width: 430mm
- Height: 373mm
- Weight 19Kg
Line Drawing

Mounting Distances

Product Drawing
