Aircraft Accident/Incident Report

Rock Springs, Wyoming 82901
Friday, June 22, 2012 11:00 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that during an uneventful flight, she continued past her original destination to another destination. Shortly thereafter, the pilot observed fuel streaming from the left fuel tank cap and noted that the left fuel tank gauge indicated that the tank was about 3/4 full. The pilot continued the flight toward her new destination while continuing to use fuel from the left fuel tank. As the airplane neared the new destination, the pilot observed that the left fuel tank was about 1/2 full; the engine then lost power. After the engine lost power, the pilot switched fuel tanks and advanced both the throttle and mixture control levers; however, the engine did not restart, so she performed an off-airport landing to an open field. During a postaccident interview, the pilot stated that the fuel cap was not secured properly after refueling. As a result, fuel was siphoned from that fuel tank during the flight. Further, because the pilot had chosen to continue operating on that fuel tank, the engine lost power due to fuel starvation. A pressure differential likely resulted in the inaccurate fuel gauge indication. Examination of the left fuel tank cap and seal revealed no evidence of any preexisting anomalies that would have precluded normal operation.

NTSB Probable Cause Narrative

The total loss of engine power due to fuel starvation because of the incorrectly installed fuel cap. Contributing to the accident was the pilot’s decision to continue the flight using fuel from the left fuel tank after she observed fuel streaming from the left fuel tank cap.

Event Information

Type of Event Accident
Event Date 6/22/2012
Event Day of the Week Friday
Time of Event 1100
Event Time Zone Mountain Daylight Time
Event City Rock Springs
Event State WYOMING
Event Country --
Zipcode of the event site 82901
Event Date Year 2012
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 413549N
Event Location Longitude 1090354W
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 --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1054 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 90
Weather Observation Facility ID RKS
Elevation of weather observation facility 6765
Distance of event from weather observation facility (units?) 25
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 27
Dew Point at event time (in degress fahrenheit) -8
Wind Direction (degrees magnetic) --
Variable Wind Indicator Variable
Wind Speed (knots) 4
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.97
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 31792
NTSB Notification Source FAA Operations Center
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Aug 27 2013 6:19PM
User who most recently changed record stam
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N4972M
NTSB Number WPR12LA309
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name BEECH
Aircraft Model A36
Aircraft Series Identifier --
Aircraft Serial Number E-1275
Certified Max Gross Weight 3650
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 6
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jan 1 2012 12:00AM
Airframe hours since last inspection --
Airframe Hours 3209
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name WALDO AIR LLC
Aircraft Owner Street Address --
Aircraft Owner City BEND
Aircraft Owner State OR
Aircraft Owner Country USA
Aircraft Owner Zipcode 97702-1979
Operator is an individual? No
Operator Name Jana VanAmburg
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Bend
Operator State OR
Operator Country USA
Operator Zip code 97702
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation --
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 No
Departure Airport Code --
Departure City Bend
Departure State OR
Departure Country USA
Departure Time 717
Departure Time Zone PDT
Destination Same as Local Flt crash at destination city
Destination Airport Code --
Destination City Rock Springs
Destination State WY
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Aug 27 2013 6:13PM
User who most recently changed record stam
Since inspection or accident Time of Accident
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --