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Height Above Surface (HAS) (HAM)
DGIF baseline 2026-1, the latest. Earlier baselines: timemap.
RDF: ham.ttl
- Name
heightAboveSurface- Datatype
- Real
- Definition
- The vertical distance between the highest terrain/surface within a 5200 feet radius of the Missed Approach Point (MAP) and the Minimum Descent Altitude (MDA).
- Description
- The Height Above Surface (HAS) applies to point-in-space (PinS) procedures.
- Synonyms
- HAS
- Accepted
- 2013-10-18
- Defined by
- DFDD
- Physical quantity
- length
- Recommended unit
- Metre (m)
- Used by
- GA290 Missed Approach Segment
- GA215 Terminal Instrument Procedure Minima
Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.