Helicopter pilot was forced to make an off airport landing after the aircraft engine seized.

Attributes
ACN	532754
Time
Date	200112
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ttn.airport
State Reference	NJ
Altitude	msl single value : 2500
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Helicopter
Operating Under FAR Part	Part 91
Navigation In Use	other other vortac
Flight Phase	cruise : level
Flight Plan	None
Person 1
Affiliation	other
Function	instruction : instructor
Qualification	pilot : cfi pilot : commercial
Experience	flight time last 90 days : 54 flight time total : 527 flight time type : 380
ASRS Report	532754
Person 2
Affiliation	other
Function	instruction : trainee
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : oil pressure indication other flight crewa
Resolutory Action	flight crew : declared emergency
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Was in cruise flight from penns landing to hachettstown airport when a small knock started. Turned back to mercer county airport and reported what I had, and that I needed to land. About 6 mi out, the pressure started to drop, then told mercer county I was going to make a landing at a golf course. I was coming down at about 1500 ft when the engine locked up. I entered an autorotation and landed, with no damage to the helicopter. I called mercer county to say we were ok, then killed all power and fuel.

Original NASA ASRS Text

Title: HELI PLT WAS FORCED TO MAKE AN OFF ARPT LNDG AFTER THE ACFT ENG SEIZED.

Narrative: WAS IN CRUISE FLT FROM PENNS LANDING TO HACHETTSTOWN ARPT WHEN A SMALL KNOCK STARTED. TURNED BACK TO MERCER COUNTY ARPT AND RPTED WHAT I HAD, AND THAT I NEEDED TO LAND. ABOUT 6 MI OUT, THE PRESSURE STARTED TO DROP, THEN TOLD MERCER COUNTY I WAS GOING TO MAKE A LNDG AT A GOLF COURSE. I WAS COMING DOWN AT ABOUT 1500 FT WHEN THE ENG LOCKED UP. I ENTERED AN AUTOROTATION AND LANDED, WITH NO DAMAGE TO THE HELI. I CALLED MERCER COUNTY TO SAY WE WERE OK, THEN KILLED ALL PWR AND FUEL.

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.