Definition
CONTINGENCY HAZARD AREA (CHA)
Used by ATC. Areas of airspace that are defined and distributed in advance of a launch or reentry operation and are activated in response to a failure.
- See: AIRCRAFT HAZARD AREA
- See: REFINED HAZARD AREA
- See: TRANSITIONAL HAZARD AREA
Source: FAA Pilot/Controller Glossary (verbatim from the Federal Aviation Regulations).