CHI97LA209

NTSB accident investigation · Piper PA-25-235A · O'Neil, NE · July 10, 1997

Accident · No injuriesLimited investigationFinal report
Date
July 10, 1997, 15:45 local (20:45 UTC)
Place
O'Neil, NE
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N7050ZPiper PA-25-235A
Weather
Visual (VMC) · Day
Status
Completed · report May 21, 1998
Report
Approved by Office Director
FAA report
19970710018209A
Case key
10628

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

fuel exhaustion, due to the pilot's improper planning/decision and inadequate fuel consumption calculations. Factors relating to the accident were: the lack of an operable fuel indication system, and the high winds.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine powerCruise
Planning/decision - improperPilot in commandCause
Fuel system,fuel quantity float/sensor - disconnectedFactor
Fuel consumption calculations - inadequatePilot in commandCause
Fluid,fuel - exhaustionCause
Forced landingEmergency descent/landing
In flight collision with terrain/waterEmergency landing
Weather condition - high windFactor

Analysis

The pilot reported the fuel tanks were topped off. The winds were from 160 degrees at 20 gusting to 27 knots. The pilot reported flying at 1,000 feet above ground level. He diverted to the west due to weather. He reported that after two hours of flight, the engine RPM dropped from 2,200 to 2,000, and then to 1,500 RPM. The pilot was maneuvering to land in a field which ran north to south, when the engine RPM dropped to 1,000. He then determined that he could not reach the intended field, so he turned to the southwest for a forced landing. He reported that as he flared during touchdown, a wind gust from the south lifted the left wing, and the right wing struck the ground. The airplane did not have an operable fuel indication system. A visual inspection disclosed a small amount of fuel in the carburetor float chamber and the firewall fuel strainer. There was no evidence of fuel in the fuel tank or lower fuselage cavity. Also, there was no evidence of fuel seepage at the crash site or stains on the fuselage where fuel could have seeped out.

Factual narrative

On July 10, 1997, at 1545 central daylight time (CDT), a Piper PA-25-235A, N7050Z, operated by Mid-Continent Aircraft Corp., was substantially damaged when it lost power in cruise flight and impacted the terrain about 11 miles from O'Neil, Nebraska. The pilot was not injured. The 14 CFR Part 91 flight had departed Clark, South Dakota, on a ferry flight to Hayti, Missouri. Visual meteorological conditions prevailed at the time and no flight plan was filed.

The pilot reported that he had topped off the 39 gallon fuel tank prior to the flight. The pilot reported that he had departed for Hyati, Missouri, at 1345 CDT. He reported the AWOS indicated the weather was clear. The winds were from 160 at 20 knots gusting to 27 knots. He reported flying at 1,000 feet above ground level. While en route he changed course to the west to avoid weather. He reported that after two hours of flight the engine PRM's dropped from 2,200 RPM's to 2,000 RPM's, and then to 1,500 RPM's. He set up an approach to a field which ran north to south until the engine RPM's dropped to 1,000 RPM's, and he determined he could not make his intended field. He turned right to the southwest and attempted to land. He reported that as he flared during touchdown a wind gust from the south (his left) lifted the left wing and the right wing struck the ground and the airplane cartwheeled. The airplane came to rest facing the south after cartwheeling 270 degrees. The pilot exited the airplane with no injuries.

An Airworthiness Inspector from the Federal Aviation Administration examined the airplane and the accident site. He reported that the airplane did not have an operable fuel indication system. The fuel shutoff valve actuating cable was disconnected and the valve was frozen in the open position. He reported that a visual inspection disclosed a small amount of fuel in the carburetor float chamber and the firewall fuel strainer. There was no evidence of fuel in the fuel tank or lower fuselage cavity. He reported there was no evidence of fuel seepage at the crash site or stains on the fuselage where fuel could have seeped out. He reported that the Enviromental Protection Agency representative did not find any evidence of fuel or chemical seepage at the accident site.

The Airworthiness Inspector reported that there was no evidence of propeller rotation at impact. The magnetos and carburetor were examined and no anomalies were found.

Aircraft

Registration
N7050Z
Reported as
Piper PA-25-235A
Category
Airplane
Serial number
25-2818
Airframe hours
5,082
Engine
Lycoming O-540-B2-B5, 235 horsepower, reciprocating
Damage
Substantial damage
Flight
Ferry · Part 91
Registered owner
Mid-Continent Aircraft Corp.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · December 2, 1994 · 4 hours before
Departed
8D7 · Clark, SD
Destination
ONL · Oneil, NE

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
62
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
15,000 total · 2,000 in this make and model · 9,475 as pilot in command · 100 in the last 90 days · 25 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 20 knots, gusting 27
Visibility
10 statute miles
Lowest ceiling
None
Temperature
88 °F, dew point 64 °F
Altimeter
29.00 inHg
Observed at
ONL, 11 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.