EN28 pilot left aircraft unattended with an engine at idle at ZZZ, us.

Attributes
ACN	502280
Time
Date	200102
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Enstrom Helicopter 280 Shark
Operating Under FAR Part	Part 91
Flight Phase	ground : parked
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument pilot : cfi
Experience	flight time last 90 days : 100 flight time total : 8000 flight time type : 1000
ASRS Report	502280
Events
Anomaly	non adherence : far non adherence : published procedure other anomaly other
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Helicopter rides were being conducted. After first flight, I secured helicopter by locking controls in place and left it with engine idling -- rotors disengaged but still turning. Walked 50 yards to office for earplugs and escorted next passenger out to helicopter. In retrospect, I should have stayed at controls and completely shut down machine before leaving cockpit.

Original NASA ASRS Text

Title: EN28 PLT LEFT ACFT UNATTENDED WITH AN ENG AT IDLE AT ZZZ, US.

Narrative: HELI RIDES WERE BEING CONDUCTED. AFTER FIRST FLT, I SECURED HELI BY LOCKING CTLS IN PLACE AND LEFT IT WITH ENG IDLING -- ROTORS DISENGAGED BUT STILL TURNING. WALKED 50 YARDS TO OFFICE FOR EARPLUGS AND ESCORTED NEXT PAX OUT TO HELI. IN RETROSPECT, I SHOULD HAVE STAYED AT CTLS AND COMPLETELY SHUT DOWN MACHINE BEFORE LEAVING 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.