Mechanical & Engine Failure · NTSB ERA10LA203

LOPEZ PHILLIP JABIRU J250 — Middletown, DE

1 fatal
DateApril 2, 2010
LocationMiddletown, DE
AircraftLOPEZ PHILLIP JABIRU J250 (amateur-built)
Purpose of flightPersonal
ConditionsDay · Visual Meteorological Cond
Phase / occurrenceEmergency descent Off-field or emergency landing
Pilot age69
Pilot total time449 hrs · Building experience
Time in type62 hrs
Fatalities1, 1 serious

Probable cause

The pilot's failure to apply carburetor heat, which resulted in the formation of carburetor icing and a total loss of engine power.

NTSB findings

  • Environmental issues-Conditions/weather/phenomena-Temp/humidity/pressure-Conducive to carburetor icing-Effect on equipment - C
  • Personnel issues-Action/decision-Action-Lack of action-Pilot - C

What happened

According to the pilot, during cruise flight the engine reportedly lost power, and his attempts to restore engine power were unsuccessful. The pilot conducted a forced landing, and the airplane collided with trees and power lines before the fuselage came to rest inverted in the wires. A postaccident examination of the airplane’s fuel system did not reveal a reason for the loss of power. The engine was test run after the accident and no evidence of preexisting malfunctions or anomalies were found that would have precluded normal operation. A review of the Federal Aviation Administration carburetor icing probability chart revealed temperature and dew point conditions at the time of the accident were favorable for serious carburetor icing at cruise power settings; however, according to the surviving passenger, the pilot did not discuss the possibility of carburetor ice during the event. A low level of diphenhydramine, an impairing antihistamine, was detected in the pilot’s blood on toxicological evaluation. It is possible that the pilot was somewhat impaired from recent use of the medication, but the role of such potential impairment in his failure to recognize evidence of carburetor icing could not be conclusively determined.

An editorial "what led to it / how to avoid it" analysis for this accident is generated separately and will appear here.

View the official NTSB docket →