Narrative:

Aircraft spun 1 revolution on the ground to the right and broke 1 navigation light off wing tip. I have a twin aircraft. As I started the left engine, with brakes on, I proceeded to check the INS. I put my head down to check fuel valve on both tanks. I hit left power handle with shoulder. The power then increased and the aircraft spun. I propped the engine. I left my wife in the cockpit. The engine started kind of high RPM. I hollered to my wife to reduce power by putting the handle down. Apparently she increased and the plane started moving slow, and then faster and faster. She panicked and I ran to jump in the cockpit, but it was going too fast, so I held on to the right wing tip. We went around 3 times before my wife finally cut the power off. We were terrified and I promise never to propeller an airplane with or west/O a pilot in the cockpit.

Google
 

Original NASA ASRS Text

Title: PLT'S PRACTICE OF STARTING ENGINE HAND-PROPPING WITHOUT A QUALIFIED PLT IN COCPIT CREATES A RUNAWAY ACFT AT THE RAMP. THAT IS STORY #2. STORY #1 READS DIFFERENTLY.

Narrative: ACFT SPUN 1 REVOLUTION ON THE GND TO THE RIGHT AND BROKE 1 NAV LIGHT OFF WING TIP. I HAVE A TWIN ACFT. AS I STARTED THE LEFT ENG, WITH BRAKES ON, I PROCEEDED TO CHK THE INS. I PUT MY HEAD DOWN TO CHK FUEL VALVE ON BOTH TANKS. I HIT LEFT PWR HANDLE WITH SHOULDER. THE PWR THEN INCREASED AND THE ACFT SPUN. I PROPPED THE ENG. I LEFT MY WIFE IN THE COCKPIT. THE ENG STARTED KIND OF HIGH RPM. I HOLLERED TO MY WIFE TO REDUCE PWR BY PUTTING THE HANDLE DOWN. APPARENTLY SHE INCREASED AND THE PLANE STARTED MOVING SLOW, AND THEN FASTER AND FASTER. SHE PANICKED AND I RAN TO JUMP IN THE COCKPIT, BUT IT WAS GOING TOO FAST, SO I HELD ON TO THE RIGHT WING TIP. WE WENT AROUND 3 TIMES BEFORE MY WIFE FINALLY CUT THE PWR OFF. WE WERE TERRIFIED AND I PROMISE NEVER TO PROP AN AIRPLANE WITH OR W/O A PLT IN THE COCKPIT.

Data retrieved from NASA's ASRS site as of July 2007 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.