- Date
- July 31, 2011, 12:30 local (17:30 UTC)
- Place
- Rolfe, IA
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N5647FAlon A-2A
- Defining event
- Enroute-cruise: Loss of engine power (partial)
- Weather
- Visual (VMC) · Day
- Status
- Completed · report October 17, 2011
- Report
- Approved by Office Director
- NTSB office
- Central Region
- Parties
- FAA-DSM-FSDO
- FAA report
- 20110731016069A
- Case key
- 81325
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
The pilot's decision to execute a precautionary landing to unsuitable terrain.
Findings · 3
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
The pilot applied carburetor heat twice during the flight to regain engine power. Following the second application of carburetor heat, he was not confident that the engine was producing full power and he elected to make a precautionary landing on a road; however, during the landing approach he noted power lines and a fence bordering the road. The pilot decided the road was not suitable for landing. Concerned that the engine was not performing well enough to execute a go-around, the pilot elected to continue the landing into a nearby cornfield. The airplane contacted the corn crop, a ditch, and a fence during the landing resulting in substantial damage to the wings and firewall. According to the Federal Aviation Administration icing probability chart, the airplane was operating in conditions conducive to carburetor icing at glide and cruise power at the time of the accident.
Factual narrative
The pilot reported that the engine began to lose power during cruise flight. He applied carburetor heat and engine power was restored. Approximately 5 minutes later, the engine again began to lose power. The pilot applied carburetor heat and the engine power increased; however, the pilot was concerned the engine was not developing full power. He elected to make a precautionary landing on a road, but during the landing approach he noted power lines and a fence bordering the road. The pilot decided the road was not suitable for landing. Concerned that the engine was not performing well enough to execute a go-around, the pilot elected to continue the landing into a nearby cornfield. The airplane contacted the corn crop, a ditch, and a fence during the landing resulting in substantial damage to the wings and firewall. According to the Federal Aviation Administration icing probability chart, with the temperature and dew point, 84 degrees Fahrenheit and 75 degrees Fahrenheit respectively, conditions were conducive for carburetor ice at glide and cruise power.
Aircraft
- Registration
- N5647F
- Reported as
- Alon A-2A
- Category
- Airplane
- Serial number
- B-247
- Engine
- Continental C90, 90 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Operator
- Howell Jan J
- Registered owner
- Howell Jan J
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · January 1, 2011 · 20 hours before
- Departed
- CCY · Charles City, IA
- Destination
- CKP · Cherokee, IA
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
- 76
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, With waivers/limitations
- Last flight review
- February 7, 2011
- Seat
- Left
- Flight hours
- 2,375 total · 300 in this make and model · 15 in the last 90 days · 10 in the last 30 days · 3 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 170° at 5 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 84 °F, dew point 75 °F
- Altimeter
- 30.11 inHg
- Observed at
- FOD, 25 nm away
Docket · 2
The files NTSB released with the investigation on September 7, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 779 KB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.
Other investigations on N5647F · 1
Matched to the same aircraft by N-number and date.