A bell 47 loses engine power and performs an off airport landing in the mountains southeast of 050, ...

Attributes
ACN	437419
Time
Date	199905
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : 05u.airport
State Reference	NV
Altitude	msl single value : 7300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Bell 47
Operating Under FAR Part	Part 91
Flight Phase	cruise : enroute altitude change
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : commercial
Experience	flight time last 90 days : 25 flight time total : 1030 flight time type : 900
ASRS Report	437419
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far other anomaly
Independent Detector	other flight crewa
Resolutory Action	flight crew : landed in emergency condition
Factors
Maintenance	performance deficiency : repair
Supplementary
Problem Areas	Aircraft Airspace Structure Maintenance Human Performance
Primary Problem	Aircraft

Narrative:

Engine lost power and efforts to recover power and rotor speed were only partially successful. Landed on clear area in mountains. No damage to helicopter or pilot. Intake manifold gasket blown. Engine had less than 50 hours since overhaul. Pilot's medical out of date.

Original NASA ASRS Text

Title: A BELL 47 LOSES ENG PWR AND PERFORMS AN OFF ARPT LNDG IN THE MOUNTAINS SE OF 050, NV.

Narrative: ENG LOST PWR AND EFFORTS TO RECOVER PWR AND ROTOR SPD WERE ONLY PARTIALLY SUCCESSFUL. LANDED ON CLR AREA IN MOUNTAINS. NO DAMAGE TO HELI OR PLT. INTAKE MANIFOLD GASKET BLOWN. ENG HAD LESS THAN 50 HRS SINCE OVERHAUL. PLT'S MEDICAL OUT OF DATE.

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.

A bell 47 loses engine power and performs an off airport landing in the mountains southeast of 050, nv.