- Date
- January 12, 2009, 16:30 local (21:30 UTC)
- Place
- Woodstock, GA
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N57NCessna 120
- Defining event
- Approach-VFR pattern final: Loss of engine power (partial)
- Weather
- Visual (VMC) · Day
- Status
- Completed · report June 11, 2009
- Report
- Approved by Office Director
- NTSB office
- Eastern Region Aviation
- Parties
- FAA/FSDO
- Case key
- 73385
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
A loss of engine power, as reported by the pilot, for undetermined reasons.
Findings · 1
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
While on the base leg of the traffic pattern, the pilot states that he applied carburetor heat and reduced the engine power to idle. He reported that when he turned onto the final leg, the airplane was lower than he wanted it be and that he advanced the throttle control, but the engine did not respond. The airplane subsequently struck trees prior to the runway and then impacted the ground. Both wings and the fuselage were substantially damaged. The National Transportation Safety Board was notified of the accident by the pilot about 1 month after the accident. Examination of the airplane by a Federal Aviation Administration inspector was conducted about 6 weeks after the accident and did not reveal evidence of any preaccident malfunctions. A weather report from an airport located about 9 miles northeast of the accident site about the time of the accident indicated a temperature of 9 degrees Celsius (C) and a dew point of -7 degrees C.
Factual narrative
The pilot was landing the Cessna 120, on a 2,000-foot-long, turf runway, at a private airport. While on the base leg of the traffic pattern, he applied carburetor heat and reduced the engine power to idle. The pilot reported that when he turned onto the final leg, the airplane was lower than he wanted it be and he advanced the throttle control; however, the engine did not respond. The airplane subsequently struck trees prior to the runway, and then impacted the ground. Both wings and the fuselage were substantially damaged. The National Transportation Safety Board was notified of the accident by the pilot, about 1 month after the accident. Examination of the airplane by a Federal Aviation Administration inspector was conducted about 6 weeks after the accident, and did not reveal evidence of any preaccident malfunctions. The weather reported at an airport located about 9 miles northeast of the accident site; about the time of the accident, included a temperature of 9 degrees Celsius C, and a dew point of -7 degrees C.
Aircraft
- Registration
- N57N
- Reported as
- Cessna 120
- Category
- Airplane
- Serial number
- 11996
- Airframe hours
- 5,623
- Engine
- Cont Motor C85 SERIES, 85 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Operator
- Kobs Edward J
- Registered owner
- Kobs Edward J
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · December 2, 2008 · 1 hours before
- Departed
- CZL · Dalton, GA
- Destination
- 5GA4 · Woodstock, GA
- Airport
- 5GA4 · Air Acres, runway 18, 2,000 × 100 ft, grass/turf
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 66
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 3, With waivers/limitations
- Last flight review
- July 31, 2006
- Seat
- Left
- Flight hours
- 1,650 total · 100 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 48 °F, dew point 19 °F
- Altimeter
- 30.19 inHg
- Observed at
- RYY, 9 nm away
Other investigations on N57N · 1
Matched to the same aircraft by N-number and date.