Perl Acres Airport
Aircraft Accident/Incident Report

Clarksburg, New Jersey 08535
Wednesday, May 21, 1997 11:47 EDT

NTSB Narrative Summary Released at Completion of Accident

The main rotor blades struck a building after the helicopter lifted off from a dolly. The pilot reported that he backed the helicopter out of an aircraft hangar aboard an electrically powered dolly. He said the dolly batteries were not charged and that he used a battery charger and an extension cord to move the helicopter outside. The pilot explained that he intended to start the helicopter, warm it up, and check aircraft systems while the batteries charged on the dolly. Once the batteries were charged, he would move the helicopter a further distance from the hangar for takeoff. The pilot had no recollection of the accident other than sitting in the helicopter with the engine and rotors operating. Examination of the accident site revealed the helicopter was facing the hangar, oriented 155 degrees magnetic, with the tail into '...a very strong wind.' The main rotor blades struck approximately 6 inches above the door opening and penetrated the building a distance of 2 feet, 7 inches.

NTSB Probable Cause Narrative

The pilot's failure to maintain adequate clearance from the hangar.

Event Information

Type of Event Accident
Event Date 5/21/1997
Event Day of the Week Wednesday
Time of Event 1147
Event Time Zone Eastern Daylight Time
Event City CLARKSBURG
Event State NEW JERSEY
Event Country --
Zipcode of the event site 08535
Event Date Year 1997
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport PERL ACRES
Event Location Nearest Airport ID 46NJ
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 150
Weather Briefing Completeness Partial - limited by pilot
Investigator's weather source Weather Observation Facility
Time of the weather observation 1154 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 270
Weather Observation Facility ID PNE
Elevation of weather observation facility 121
Distance of event from weather observation facility (units?) 25
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 16
Dew Point at event time (in degress fahrenheit) 2
Wind Direction (degrees magnetic) 310
Variable Wind Indicator Unknown
Wind Speed (knots) 14
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 22
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None --
Injury Total Serious 1
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 998
NTSB Notification Source --
NTSB Notification Date May 21 1997 12:00AM
NTSB Notification Time 1230
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 12:17PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N613LG
NTSB Number NYC97LA097
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage None
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Enstrom
Aircraft Model 280-C
Aircraft Series Identifier 280-C
Aircraft Serial Number 1145
Certified Max Gross Weight 2150
Aircraft Category Helicopter
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jan 23 1997 12:00AM
Airframe hours since last inspection 24
Airframe Hours 1556
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name BEN LITTON
Aircraft Owner Street Address 209 STILLHOUSE RD
Aircraft Owner City FREEHOLD
Aircraft Owner State NJ
Aircraft Owner Country
Aircraft Owner Zipcode 07728
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code 46NJ
Departure City
Departure State
Departure Country
Departure Time 1147
Departure Time Zone EDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --