Corrective Action RA

This type of RA occurs when the altitude separation at the CPA is not safe. These RA aural advisories tell the flight crew to take corrective action to avoid a possible collision:

· CLIMB - CLIMB - CLIMB. The flight crew must climb at a rate to avoid the preventive up advisory.

· CLIMB CROSSING CLIMB - CLIMB CROSSING CLIMB. The flight crew must climb at a rate to avoid the preventive up advisory. The flight path crosses through the flight path of the threat.

· REDUCE CLIMB - REDUCE CLIMB. The flight crew must reduce the rate of climb to avoid the preventive down advisory.

· DESCEND - DESCEND - DESCEND. The flight crew must descend at a rate to avoid the preventive down advisories.