An small aircraft pilot is injured when he is struck by the propeller when attempting to 'adjust' the propeller by hand with the magneto switch still in the 'on' position. The aircraft had been difficult to start in cold WX at 4AC, NM.

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Attributes
ACN	461216
Time
Date	200001
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : 4ac.airport
State Reference	NM
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mia.tower
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	ground : preflight
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 25 flight time total : 700 flight time type : 150
ASRS Report	461216
Events
Anomaly	aircraft equipment problem : less severe ground encounters : person non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	other
Supplementary
Problem Areas	Aircraft Environmental Factor Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

The airplane had been having difficulty starting since the onset of cold WX. The battery had just been replaced. I tried to start the engine without success and got out to adjust the propeller. I neglected to turn off the magnetos and when I moved the propeller the engine started. The propeller hit me on the head and the right elbow. I was hospitalized for 5 days. The incident could have been prevented if I had been certain I turned the magnetos off.

Original NASA ASRS Text

Title: AN SMA PLT IS INJURED WHEN HE IS STRUCK BY THE PROP WHEN ATTEMPTING TO 'ADJUST' THE PROP BY HAND WITH THE MAGNETO SWITCH STILL IN THE 'ON' POS. THE ACFT HAD BEEN DIFFICULT TO START IN COLD WX AT 4AC, NM.

Narrative: THE AIRPLANE HAD BEEN HAVING DIFFICULTY STARTING SINCE THE ONSET OF COLD WX. THE BATTERY HAD JUST BEEN REPLACED. I TRIED TO START THE ENG WITHOUT SUCCESS AND GOT OUT TO ADJUST THE PROP. I NEGLECTED TO TURN OFF THE MAGNETOS AND WHEN I MOVED THE PROP THE ENG STARTED. THE PROP HIT ME ON THE HEAD AND THE R ELBOW. I WAS HOSPITALIZED FOR 5 DAYS. THE INCIDENT COULD HAVE BEEN PREVENTED IF I HAD BEEN CERTAIN I TURNED THE MAGNETOS OFF.

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.