Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms
Aviation Accident Data Summary - National Transportation Safety Board: https://app.ntsb.gov/pdf
http://registry.faa.gov/N415HC
The National Transportation Safety Board did not travel to the scene of this accident.
Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; San Antonio, Texas
14 CFR Part 91: General Aviation
Accident occurred Sunday, January 01, 2017 in New Braunfels, TX
Probable Cause Approval Date: 06/14/2017
Aircraft: QUICKSILVER GT-400 R503, registration: N415HC
Injuries: 1 Uninjured.
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 sport pilot reported that, about 15 minutes into the pleasure flight, the engine began “sputtering” and losing power. The pilot attempted to correct the problem by adjusting the throttle and applying the engine primer without success. The pilot then selected a field for a forced landing, during which the right main landing gear struck a power line. The airplane then flipped over and subsequently impacted a carport rooftop.
Examination of the engine revealed that one of the four spark plugs was loose in the cylinder, which led to a loss of compression and partial loss of engine power. The pilot’s safety recommendation stated, “closer inspection of checking spark plugs before flight.”
The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
The partial loss of engine power due to a loose spark plug. Contributing to the accident was the pilot's improper preflight inspection of the airplane.
On January 1, 2017, about 1130 central standard time, a Quicksilver GT-400 R503 experimental light sport airplane, N415HC, impacted power lines during a forced landing following a partial loss of engine power near New Braunfels, Texas. The sport pilot, who was the sole occupant, was not injured, and the airplane sustained substantial damage. The airplane was registered to and operated by a private individual as a 14 Code of Federal Regulations Part 91 personal flight. Visual meteorological conditions prevailed at the time of the accident and a flight plan was not filed. The local flight departed a private airstrip about 1110.
According to the pilot/owner, about 15 minutes into the pleasure flight, the engine began "sputtering" and losing power. The pilot attempted to correct the problem by adjusting the throttle and applying engine primer. The attempts were unsuccessful in restoring engine power. The pilot then identified a field for a forced landing. During the forced landing, the right main landing gear struck a power line. After impacting the power line, the airplane flipped inverted, and dropped about 20 feet onto a carport rooftop. The pilot exited the airplane.
Examination of the airplane by Federal Aviation Administration inspectors revealed both wings were bent and the wing fabric was damaged. No visual anomalies with the engine were noted.
After the airplane was recovered from the carport, the pilot and a few friends examined the airplane and systems. The pilot noticed that one of the four engine spark plugs was loose in the cylinder. The pilot determined that the loose spark plug led to a loss of compression and partial loss of engine power during the accident flight. The pilot's safety recommendation, as noted in the pilot/operator accident report, stated "closer inspection of checking spark plugs before flight."
NTSB Identification: CEN17LA079
14 CFR Part 91: General Aviation
Accident occurred Sunday, January 01, 2017 in New Braunfels, TX
Aircraft: QUICKSILVER GT-400 R503, registration: N415HC
Injuries: 1 Uninjured.
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 January 1, 2017, about 1130 central standard time, a Quicksilver GT-400 R503 experimental light sport airplane, N415HC, impacted power lines during a forced landing following a partial loss of engine power near New Braunfels, Texas. The sport pilot, who was the sole occupant, was not injured, and the airplane sustained substantial damage. The airplane was registered to and operated by a private individual as a 14 Code of Federal Regulations Part 91 personal flight. Visual meteorological conditions prevailed at the time of the accident and a flight plan was not filed. The local flight departed a private airstrip about 1115.
According to the pilot, about 15 minutes into the pleasure flight, the engine began "sputtering". The pilot attempted to correct the problem by adjusting the throttle and applying engine primer. The attempts were unsuccessful in restoring engine power. The pilot then identified a field for a forced landing. During the forced landing, the right main landing gear struck a power line. After impacting the power line, the airplane flipped inverted, and dropped about 20 feet onto a carport rooftop. The pilot exited the airplane.
Examination of the airplane by Federal Aviation Administration inspectors revealed both wings were bent and the wing fabric was damaged. No visual anomalies with the engine were noted. The airplane was retained for further examination.
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