Narrative:

I was a PNF in a piper cheyenne ii. The aircraft experienced an unusual attitude while between layers at FL250 over north central south dakota on an IFR flight plan. The aircraft lost considerable altitude and an emergency was declared by the pilot. I did not have a flying role in this incident but did fly the plane the next day from faith; sd; to bismarck; nd; our home base approximately 150 mi away. Having been in the plane during the unusual attitude; I could see it was flying properly and developing full power after the incident but we landed at the closest airport right away anyway. Both attitude indicators were totally tumbled during the unusual attitude and remained tumbled on the ground in taxi as well. We spent the night in faith; sd; and arranged for an aircraft mechanic and a&P to come to faith; sd; and inspect the plane in the daylight and determine if it was airworthy. The mechanic inspected the plane and determined it was airworthy after closely looking it over and running it up and both attitude indicators worked properly on the ground so we departed faith and flew the plane in VFR WX to bismarck without a problem. The mechanic made a logbook entry about the inspection before we flew the plane home and he rode with me on the flight from faith to bismarck. I am filing this form to state that we landed at the closest airport after the incident and then had the plane inspected after the incident before it was flown again and the aircraft was determined to be airworthy and the inspection was noted and we flew the plane home in VFR conditions without a problem.

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Original NASA ASRS Text

Title: RPTR ADVISES THAT PRIOR TO A SUBSEQUENT FLT; A PROPER INSPECTION BY A LICENSED MECH WAS MADE OF A CHEYENNE II WHICH EXPERIENCED A STRESSFUL RECOVERY FROM AN UNUSUAL ATTITUDE UPSET AND LANDED AT THE NEAREST SUITABLE ARPT AFTER RECOVERY.

Narrative: I WAS A PNF IN A PIPER CHEYENNE II. THE ACFT EXPERIENCED AN UNUSUAL ATTITUDE WHILE BTWN LAYERS AT FL250 OVER NORTH CENTRAL SOUTH DAKOTA ON AN IFR FLT PLAN. THE ACFT LOST CONSIDERABLE ALT AND AN EMER WAS DECLARED BY THE PLT. I DID NOT HAVE A FLYING ROLE IN THIS INCIDENT BUT DID FLY THE PLANE THE NEXT DAY FROM FAITH; SD; TO BISMARCK; ND; OUR HOME BASE APPROX 150 MI AWAY. HAVING BEEN IN THE PLANE DURING THE UNUSUAL ATTITUDE; I COULD SEE IT WAS FLYING PROPERLY AND DEVELOPING FULL PWR AFTER THE INCIDENT BUT WE LANDED AT THE CLOSEST ARPT RIGHT AWAY ANYWAY. BOTH ATTITUDE INDICATORS WERE TOTALLY TUMBLED DURING THE UNUSUAL ATTITUDE AND REMAINED TUMBLED ON THE GND IN TAXI AS WELL. WE SPENT THE NIGHT IN FAITH; SD; AND ARRANGED FOR AN ACFT MECH AND A&P TO COME TO FAITH; SD; AND INSPECT THE PLANE IN THE DAYLIGHT AND DETERMINE IF IT WAS AIRWORTHY. THE MECH INSPECTED THE PLANE AND DETERMINED IT WAS AIRWORTHY AFTER CLOSELY LOOKING IT OVER AND RUNNING IT UP AND BOTH ATTITUDE INDICATORS WORKED PROPERLY ON THE GND SO WE DEPARTED FAITH AND FLEW THE PLANE IN VFR WX TO BISMARCK WITHOUT A PROB. THE MECH MADE A LOGBOOK ENTRY ABOUT THE INSPECTION BEFORE WE FLEW THE PLANE HOME AND HE RODE WITH ME ON THE FLT FROM FAITH TO BISMARCK. I AM FILING THIS FORM TO STATE THAT WE LANDED AT THE CLOSEST ARPT AFTER THE INCIDENT AND THEN HAD THE PLANE INSPECTED AFTER THE INCIDENT BEFORE IT WAS FLOWN AGAIN AND THE ACFT WAS DETERMINED TO BE AIRWORTHY AND THE INSPECTION WAS NOTED AND WE FLEW THE PLANE HOME IN VFR CONDITIONS WITHOUT A PROB.

Data retrieved from NASA's ASRS site as of January 2009 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.