decision height


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Related to decision height: Minimum Descent Altitude

decision height

[di′sizh·ən ‚hīt]
(navigation)
A height specified in MSL (mean sea level) above the highest runway elevation in the touchdown zone at which a missed approach shall be initiated if the required visual reference has not been established; this term is used only in procedure where an electronic glide slope provides a reference for descent or in ILS (instrument landing systems) or PAR (precision approach radar). Abbreviated d.h.
References in periodicals archive ?
As we approached the decision height, we obviously weren't going to break out, so we executed our missed-approach instructions and headed to Mobile Downtown Airport.
Continued use of the anti-ice system led to a windshield hot caution light, so the crew opted to wait until decision height to use the system.
This will lower approach minimums at those TLS sites where an obstacle in the missed approach sector dictates decision height.
175 a certified EFVS allows a pilot to descend below decision height (DH/DA) on most airports regardless of ground-based infrastructure.
It's a good thing they were ahead of us to relay when they barely had broken out at decision height.
Currently, Salzburg is certified for approaches to Cat I (60 metre decision height, 550m runway visibility range).
The RAD-40 has a selectable Decision Height (DH) and includes five additional trip points, all with discrete outputs - from 100 to 1000 feet - which can be used to control an audible tone or to interface with third party equipment.
Next time, if I'm at decision height and don't know it's the runway, I'm logging more flight time.
Elbit Systems of America expects the Federal Aviation Administration to next year authorize aircraft equipped with its enhanced flight vision system (EFVS) to continue poor weather descents below the current decision height of 100ft (30m).

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