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Take-Off Distance Available Helicopter (TODAH) (TOH)
DGIF baseline 2026-1, the latest. Earlier baselines: timemap.
RDF: toh.ttl
- Name
takeOffDistAvailCopter- Datatype
- Real
- Definition
- The length of the final approach and take-off area plus the length of helicopter clearway (if provided) declared available and suitable for helicopters to complete the take-off.
- Description
- A helicopter clearway is a defined area on the ground or water under the control of the appropriate authority, selected and/or prepared as a suitable area over which a performance Class 1 helicopter may accelerate and achieve a specific height.
- Synonyms
- TODAH
- Accepted
- 2013-10-18
- Defined by
- DFDD
- Physical quantity
- length
- Recommended unit
- Metre (m)
- Used by
- ZI043 Runway Declared Distance Information
Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.