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Helicopter Approach Path Indicator (HAPI) (VS1_8)
DGIF baseline 2026-1, the latest. Earlier baselines: timemap.
RDF: vs1_8.ttl
- Name
heliApproachPathIndicator- Attribute
- VS1 Visual Approach Slope Indicator System (VASIS) Type
- Definition
- A helicopter visual slope guidance system consisting of a single light unit providing guidance to a FATO.
- Description
- HAPIs consist of green and red lights, which may be steady or flashing to indicate position.
- Synonyms
- CHAPI; Chase Helicopter Approach Path Indicator
- Accepted
- 2013-10-18
- Allowed for
- GB480 Visual Approach Slope Indicator System (VASIS)
- RWOI terms naming it
- RWO_01571 Helicopter Approach Path Indicator (HAPI)
Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.