CEN13LA417

NTSB accident investigation · Piper PA-22-125 · Mapleton, MN · July 16, 2013

Accident · No injuriesLimited investigationFinal report
Date
July 16, 2013, 17:00 local (22:00 UTC)
Place
Mapleton, MN
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N663APiper PA-22-125
Defining event
Enroute-cruise: Fuel contamination
Weather
Visual (VMC) · Day
Status
Completed · report January 30, 2014
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Flight Standards District Office
FAA report
20130716011689A
Case key
87505

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The total loss of engine power due to water contamination of the fuel, which resulted in the pilot's forced landing to unsuitable terrain.

Findings · 2

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.

Fluids: fuelAircraft › Fluids/misc hardware · Fluid conditionPiper PA-22: 5 casesAll aircraft: 1,695 casesProbable cause
Terrain: rough terrainEnvironmental issues › Physical environment · Effect on equipmentPiper PA-22: 2 casesAll aircraft: 442 casesProbable cause

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 said the airplane's engine started "sputtering" then lost total power. He made a forced landing in a corn field, and the airplane nosed over. The pilot stated that he performed a thorough preflight inspection of the airplane, during which he drained fuel from all three fuel sumps, and he found no evidence of water or sediment contamination. However, postaccident examination of fuel samples taken from both the left and right wing fuel tanks and from the gascolator fuel line revealed a substantial amount of water. The investigation revealed that the airplane had been parked outside and there had been recent heavy rains in the area.

Factual narrative

On July 16, 2013, about 1700 central daylight time, the pilot of a Piper PA-22-125, N663A, made a forced landing in a cornfield after the engine lost power near Mapleton, Minnesota. The pilot and a passenger were not injured. The airplane was substantially damaged. The airplane was registered to and operated by a private individual under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed at the time of the accident, and no flight plan had been filed. The flight originated at an undetermined time from Wells (68Y), Minnesota, and was en route to Mankato (KMKT), Minnesota.The following is based on the pilot's accident report, an interview he had with Federal Aviation Administration (FAA) inspectors, the passenger's statement, and witness statements: The pilot said he telephone the Flight Service Station and obtained a weather briefing, then he performed a thorough preflight inspection of the airplane that included draining all three fuel sumps. He said there was no water or sediment in the tanks. No fuel was added. He made one solo flight to regain currency, then flew his father around the city of Wells. The pilot then took his brother and departed for Mankato. North of Mapleton at 2,500 feet, the engine "sputtered." The pilot applied carburetor heat and adjusted the fuel mixture to full rich. The engine continued to sputter. The pilot then switched to the right tank. The engine then "quit." The pilot made a forced landing in a corn field and nosed over. FAA inspectors took fuel samples from both the left and right wing fuel tanks, and from the gascolator fuel line. A substantial amount of water was recovered. According to the inspector, the airplane had been parked outside and there had been recent heavy rainfalls in the area.

Aircraft

Registration
N663A
Reported as
Piper PA-22-125
Category
Airplane
Serial number
22-66
Airframe hours
2,972
Engine
Lycoming O290D, 125 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Mccarty Michael H
Registered owner
Mccarty Michael H
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 13, 2012 · 282 hours before
Departed
68Y · Wells, MN
Destination
KMKT · Mankato, MN

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
26
Injuries
None
Certificates
Private, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
January 30, 2012
Seat
Right
Flight hours
1,126 total · 6 in this make and model · 1,082 as pilot in command · 2 in the last 90 days · 2 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles

Docket · 7

The files NTSB released with the investigation on December 5, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 9.7 MB 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.