Grumman Acft Eng Cor-Schweizer G 164A N6743Q

Summary

On 18 July 2014 at about 13:45 local time, a Grumman Acft Eng Cor-Schweizer G 164A registered N6743Q, operated by Precision Aerial AG LLC, was involved in an accident near Fairview, Kansas, United States. One person was on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

18 July 2014 at 13:45

Classification

Accident

Location

Fairview, Kansas, United States

Coordinates

39.8539, -95.7297

Aircraft

Grumman Acft Eng Cor-Schweizer G 164A

Registration

N6743Q

Category

Airplane

Engines

1

Operator

Precision Aerial AG LLC

Operating rule

Part 91: General Aviation

Purpose of flight

Ferry

Phase of flight

Not recorded

Route

Atchison → Sabetha

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

CEN14LA375

Nobody was injured.

The backfire of the engine and its loss of power for reasons that could not be determined based on the available evidence.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

The pilot reported that, while the airplane was cruising at 600 feet above ground level, the engine backfired and experienced a partial loss of power. He subsequently made an emergency landing to a road. During the landing, the engine experienced a total loss of power, and the airplane stalled, which resulted in a bounced hard landing. The airplane then slid sideways into a telephone pole, which resulted in damage to the wings and fuselage. Due to impact damage, an engine test run could not be conducted. The induction air filter was found distorted outward and opposite from the direction of normal airflow, which is indicative of an engine backfire. A postaccident engine examination revealed that the No. 2 cylinder oil control ring was broken. However, it could not be determined when the oil control ring was broken or if the engine backfiring allowed the ring to break. No other anomalies with the engine were noted. The reason for the engine backfire and subsequent loss of power could not be determined.

Quoted verbatim from the NTSB record.