20110725014169A

Accident · Substantial damage

FAA accident report · Evens Joe RV4 · Monroe City, MO · July 25, 2011

Date
July 25, 2011 · 11:30 local
Place
Monroe City, MO
Airport
Capt. Ben Smith Airfield - Mon
Phase of flight
Cruise/Level Flight
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N20JE
NTSB investigation
NTSBCEN11LA514
Reported as
Evens Joe RV4
Reported engine
Lycoming 0-320 series
People aboard
1
Fatal injuries
0
Other injuries
0
Pilot’s certificate
Airline transport
Pilot’s flight hours
10,000 total150 in this make and model20 in the last 90 days

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

On the date of the accident, the aircraft was en route from dallas, TX to oshkosh, WI. The engine began to run rough, and the pilot made the decision to divert to Monroe City, MO. As he began to divert, the engine began to perform worse. The pilot determined that he could not land at the airport, due to insufficient power being developed to sustain flight. He set up for controlled landing in a nearby soybean field and a hard landing occurred approximately 2 miles west of capt. ben Smith airfield. The aircraft remained upright and there was no post-flight fire. In the initial interview with the pilot, he expressed that conditions at the time of engine trouble were calm winds, high heat (97-100 degrees f), with high humidity. Examination of the aircraft revealed substantial damage as a result of the accident. The fixed landing gear was pushed back and outboard of their original position. The lower-aft left-hand and right-hand engine mount gusset welds were cracked, with substantial engine mount deformation. The firewall was crumpled and deformed at both left hand and right hand pilot foot positions. The propeller had made contact with the ground and both blades were bent aft. Fuel samples were taken from the left-hand wing tank, the right-hand wing tank, and the engine supply line. None of the fuel samples revealed contamination of any kind. An examination of the air carburetor inlet revealed no obstructions or obvious mechanical defects. The engine propeller was pulled through and it was verified that there was compression on all cylinders. No obvious mechanical issues were noted.

As the FAA filed it

ON THE DATE OF THE ACCIDENT, THE AIRCRAFT WAS EN ROUTE FROM DALLAS, TX TO OSHKOSH, WI. THE ENGINE BEGAN TO RUN ROUGH, AND THE PILOT MADE THE DECISION TO DIVERT TO MONROE CITY, MO. AS HE BEGAN TO DIVERT, THE ENGINE BEGAN TO PERFORM WORSE. THE PILOT DETERMINED THAT HE COULD NOT LAND AT THE AIRPORT, DUE TO INSUFFICIENT POWER BEING DEVELOPED TO SUSTAIN FLIGHT. HE SET UP FOR CONTROLLED LANDING IN A NEARBY SOYBEAN FIELD AND A HARD LANDING OCCURRED APPROXIMATELY 2 MILES WEST OF CAPT. BEN SMITH AIRFIELD. THE AIRCRAFT REMAINED UPRIGHT AND THERE WAS NO POST-FLIGHT FIRE.IN THE INITIAL INTERVIEW WITH THE PILOT, HE EXPRESSED THAT CONDITIONS AT THE TIME OF ENGINE TROUBLE WERE CALM WINDS, HIGH HEAT (97-100 DEGREES F), WITH HIGH HUMIDITY. EXAMINATION OF THE AIRCRAFT REVEALED SUBSTANTIAL DAMAGE AS A RESULT OF THE ACCIDENT. THE FIXED LANDING GEAR WAS PUSHED BACK AND OUTBOARD OF THEIR ORIGINAL POSITION. THE LOWER-AFT LEFT-HAND AND RIGHT-HAND ENGINE MOUNT GUSSET WELDS WERE CRACKED, WITH SUBSTANTIAL ENGINE MOUNT DEFORMATION. THE FIREWALL WAS CRUMPLED AND DEFORMED AT BOTH LEFT HAND AND RIGHT HAND PILOT FOOT POSITIONS. THE PROPELLER HAD MADE CONTACT WITH THE GROUND AND BOTH BLADES WERE BENT AFT.FUEL SAMPLES WERE TAKEN FROM THE LEFT-HAND WING TANK, THE RIGHT-HAND WING TANK, AND THE ENGINE SUPPLY LINE. NONE OF THE FUEL SAMPLES REVEALED CONTAMINATION OF ANY KIND. AN EXAMINATION OF THE AIR CARBURETOR INLET REVEALED NO OBSTRUCTIONS OR OBVIOUS MECHANICAL DEFECTS. THE ENGINE PROPELLER WAS PULLED THROUGH AND IT WAS VERIFIED THAT THERE WAS COMPRESSION ON ALL CYLINDERS. NO OBVIOUS MECHANICAL ISSUES WERE NOTED.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.