Narrative:

During GPS 24 practice approach the flying pilot lost situational awareness and started to descend rapidly thinking he was at the descent point. At first I thought he had a change of plan and was planning to land at a nearby airport. After a confusing conversation with ATC I realized he did not know where he was. At that point I took control of the aircraft and started a climb. Due to the confusion in the cockpit and windshear we got lower than I liked; about 500 ft AGL. A more complete briefing on the approach could have prevented this.

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Original NASA ASRS Text

Title: Instructor pilot; flying as a safety pilot in a BE55; describes a loss of situational awareness by the pilot flying and an attempt to descend to minimums early. The reporter assumes control and returns to a safe altitude.

Narrative: During GPS 24 practice approach the flying pilot lost situational awareness and started to descend rapidly thinking he was at the descent point. At first I thought he had a change of plan and was planning to land at a nearby airport. After a confusing conversation with ATC I realized he did not know where he was. At that point I took control of the aircraft and started a climb. Due to the confusion in the cockpit and windshear we got lower than I liked; about 500 FT AGL. A more complete briefing on the approach could have prevented this.

Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.