Narrative:

Without discussion; while on a climb out on down wind; my captain inverted the airplane to which he later said was to be a roll but seemed more like a split-south maneuver to me or like he lost control attempting to complete a roll. There was no discussion prior to the maneuver. The weather conditions were VFR and we were at an uncontrolled airport so I was in the process of talking to ATC and copying our clearance as the maneuver happened. I was unable to listen to ATC because I lost my headset due to the unexpected maneuver. We were low (no recollection of how high due to the shock of the situation and flight attitude we were in). However; I started to contact ATC at 3;000 ft. There were several different warning alarms and red flashing lights going of on the flight displays.

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Original NASA ASRS Text

Title: CE550 First Officer reports the Captain performing a roll during climbout from an uncontrolled airport; at low altitude; without any prior communication of his intent.

Narrative: Without discussion; while on a climb out on down wind; my Captain inverted the airplane to which he later said was to be a roll but seemed more like a split-S maneuver to me or like he lost control attempting to complete a roll. There was no discussion prior to the maneuver. The weather conditions were VFR and we were at an uncontrolled airport so I was in the process of talking to ATC and copying our clearance as the maneuver happened. I was unable to listen to ATC because I lost my headset due to the unexpected maneuver. We were low (no recollection of how high due to the shock of the situation and flight attitude we were in). However; I started to contact ATC at 3;000 FT. There were several different warning alarms and red flashing lights going of on the flight displays.

Data retrieved from NASA's ASRS site as of April 2012 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.