Tuesday, August 29, 2017

Glastar, N120CG: Accident occurred December 31, 2016 near Lee's Summit Municipal Airport (KLXT), Missouri



The National Transportation Safety Board did not travel to the scene of this accident.

Additional Participating Entity: 

Federal Aviation Administration / Flight Standards District Office; Kansas City, Missouri

Aviation Accident Final Report - National Transportation Safety Board: https://app.ntsb.gov/pdfg

Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms

Aviation Accident Data Summary - National Transportation Safety Board: https://app.ntsb.gov/pdf

Glastar (Gosselin built): http://registry.faa.gov/N120CG

NTSB Identification: CEN17LA066
14 CFR Part 91: General Aviation
Accident occurred Saturday, December 31, 2016 in Lee's Summit, MO
Probable Cause Approval Date: 08/28/2017
Aircraft: GOSSELIN CHARLES GLASTAR, registration: N120CG
Injuries: 1 Serious.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The private pilot reported that, shortly after takeoff in the experimental amateur-built airplane, the engine experienced a total loss of power. He was unable to restore power, and the airplane was substantially damaged during the subsequent forced landing. An examination of the engine and related systems revealed that one of two batteries required for operation of the electronic ignition system had a short and would not take a charge. When this battery was replaced with a known serviceable battery, the engine and systems functioned as designed. An examination of the remaining systems revealed no other anomalies.

The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
Partial failure of the electric system due to a battery short, which resulted in a total loss of engine power.

On December 31, 2016, about 0740 central standard time, an amateur-built Gosselin Glastar airplane, N120CG, was substantially damaged during a forced landing near Lee's Summit Municipal Airport (KLXT), Lee's Summit, Missouri. The private pilot sustained serious injury. The personal flight was conducted under the provisions of 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed and no Federal Aviation Administration (FAA) flight plan had been filed for the flight. The flight had departed LXT about 0730 and was en route to Miami County Airport (K81), Paola, Kansas.

According to the written statement provided by the pilot, his preflight inspection did not identify any problems. While attempting to start the airplane engine with the "A ignition system" the engine would turn over but would not start. The pilot switched to the "B ignition system" and had the same result. The pilot used a portable battery to "jump start" the engine; the engine started and ran within normal parameters. During the engine run-up, prior to takeoff, the parameters continued to indicate normal and the voltage indicated 14.2 volts. Several minutes after departure, the engine lost power. The pilot vaguely recalled trying to restore engine power but did not recall any of the events that followed.

According to the FAA inspector who responded to the accident, during the forced landing the tailwheel struck the ground first followed by the main landing gear. The fuselage and both wings were substantially damaged during the impact.

The airframe, engine, and related systems were examined under the auspices of the responding FAA inspector. The airframe was equipped with an "A", "B", and "AB" battery system; however, the batteries were in series and not parallel. The operation of the engine, fuel system, and electronic fuel injection system was dependent on electrical power from both batteries. The examination revealed that one battery had a short and would not take a charge. When that battery was replaced with a known serviceable battery, the fuel boost pumps, and alternator functioned as designed.







NTSB Identification: CEN17LA066
14 CFR Part 91: General Aviation
Accident occurred Saturday, December 31, 2016 in Lee's Summit, MO
Aircraft: GOSSELIN CHARLES GLASTAR, registration: N120CG
Injuries: 1 Serious.

This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

On December 31, 2016, about 740 central standard time, an amateur-built Gosselin Glastar airplane, N120CG, was substantially damaged during a forced landing near Lee's Summit Municipal Airport (KLXT), Lee's Summit, Missouri. The private pilot sustained serious injury. The personal flight was conducted under the provisions of 14 Code of Federal Regulations Part 091. Visual meteorological conditions prevailed and no Federal Aviation Administration (FAA) flight plan had been filed for the flight. The flight had departed KLXT about 0730 and was en route to Miami County Airport (K81), Paola, Kansas. 

According to the Federal Aviation Administration inspector who responded to the accident, about 10 minutes after departure, the engine lost power. The pilot was able to restore power to the engine, but only briefly before the engine lost power for a second time. During the forced landing the tailwheel struck the ground first followed by the main landing gear. The fuselage and both wings were substantially damaged during the impact.

No comments: