Aircraft Accident/Incident Report

Butler, Pennsylvania 16003
Sunday, August 28, 1994 14:15 EDT

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that he was overflying wooded terrain at 1000 feet msl when the engine lost power. He autorotated to a hilly field and during the landing the rotor blade severed the tailboom. According to the pilot, the fuel low warning light did not activate before the power loss occurred. The examination of the helicopter revealed the fuel tanks were empty and the fuel emergency vent valve had malfunctioned. As a result, the fuel cell decavitated and collasped, holding the fuel quantity probe in a position to indicate a one-quarter tank amount of fuel.

NTSB Probable Cause Narrative

The malfunction of the emergency fuel vent and the exhaustion of the fuel supply which resulted in the loss of engine power.

Event Information

Type of Event Accident
Event Date 8/28/1994
Event Day of the Week Sunday
Time of Event 1415
Event Time Zone Eastern Daylight Time
Event City BUTLER
Event State PENNSYLVANIA
Event Country --
Zipcode of the event site 16003
Event Date Year 1994
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1432 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID BTP
Elevation of weather observation facility 1248
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height 12000
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 5
Air Temperature at event time (in degrees celsius) 27
Dew Point at event time (in degress fahrenheit) 19
Wind Direction (degrees magnetic) 250
Variable Wind Indicator Unknown
Wind Speed (knots) 11
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 20
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1520
NTSB Notification Source --
NTSB Notification Date Aug 28 1994 12:00AM
NTSB Notification Time 1530
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 6 2000 11:58AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N5027P
NTSB Number BFO94LA155
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name HUGHES
Aircraft Model 369D
Aircraft Series Identifier 369D
Aircraft Serial Number 611002D
Certified Max Gross Weight 3000
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 5
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Jun 22 1994 12:00AM
Airframe hours since last inspection 64
Airframe Hours 4139
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name AGROTORS, INC.
Aircraft Owner Street Address P.O. BOX 4537
Aircraft Owner City GETTYSBURG
Aircraft Owner State PA
Aircraft Owner Country
Aircraft Owner Zipcode 17325
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) Ferry
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code 6W7
Departure City GETTYSBURG
Departure State PA
Departure Country
Departure Time 1200
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code 2G7
Destination City NEW CASTLE MUNI
Destination State PA
Destination Country
Specific Phase of Flight Cruise
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 --