CHI05LA213

NTSB accident investigation · Weatherly 620-B · Osage, IA · August 6, 2005

Accident · Serious injuriesLimited investigationFinal report
Date
August 6, 2005, 17:15 local (22:15 UTC)
Place
Osage, IA
Injuries
1 serious
Damage
Destroyed
Phase of flight
Takeoff
Aircraft
N6305WWeatherly 620-B
Weather
Visual (VMC) · Day
Status
Completed · report July 31, 2006
Report
Approved by Office Director
Parties
FAA-Des Moines FSDO
FAA report
20050806020499A
Case key
62191

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 partial loss of engine power for an undetermined reason. Contributing factors were the wires and the trees.

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 powerTakeoff
Reason for occurrence undeterminedCause
In flight collision with objectTakeoff
Object - wire,transmissionFactor
Object - tree(s)Factor
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground
FireStanding

Analysis

The agricultural spray airplane was destroyed by post impact fire after it impacted a power line and trees following a loss of engine power while departing from a 3,400 foot asphalt runway. The pilot reported that he had landed to refuel and take on chemicals. He reported that it was the sixth load of the day, and that the load was identical to the other five loads used previously. He reported that the airplane lifted off from the runway at the same place as the previous takeoffs. He reported that the "aircraft began to lose power about 10 ft. off the ground. There wasn't enough runway left to land so I dumped the load until I was close to the trees." He reported that he impacted the wires and settled into the trees that were located south of the runway. The airplane impacted the terrain and started to burn. The pilot reported that witnesses rescued him from the burning airplane. Tree limbs were found in the wreckage path that exhibited diagonal cuts and paint transfer marks that were consistent with propeller slashes. Fire damage to the engine precluded an inspection of the engine's ignition and fuel system.

Factual narrative

On August 6, 2005, at 1715 central daylight time, a Weatherly 620-B, N6305W, was destroyed by post impact fire after the airplane impacted a power line and trees after a loss of power while departing from runway 17 (3,400 feet by 50 feet, asphalt) at Osage Municipal Airport (D02), Osage, Iowa. The Title 14 Code of Federal Regulations Part 137 aerial application flight was departing D02 on a local flight. The pilot received serious injuries. Visual meteorological conditions prevailed at the time of the accident. No flight plan was filed.

The pilot reported that he had landed at D02 to refuel and take on chemicals. He reported that it was the sixth load of the day, and that the load was identical to the other five loads used previously. He reported that the airplane lifted off from the runway at the same place as the previous takeoffs. He reported that the "aircraft began to lose power about 10 ft. off the ground. There wasn't enough runway left to land so I dumped the load until I was close to the trees." He reported that he impacted the wires and settled into the trees that were located south of runway 17. The airplane impacted the terrain and started to burn. The pilot reported that witnesses rescued him from the burning airplane.

A Federal Aviation Administration airworthiness inspector examined the airplane. He reported that he found tree limbs in the wreckage path that exhibited diagonal cuts and paint transfer marks that were consistent with propeller slashes. Fire damage to the engine precluded an inspection of the engine's ignition and fuel system.

Aircraft

Registration
N6305W
Reported as
Weatherly 620-B
Category
Airplane
Serial number
1563
Airframe hours
2,100
Engine
Pratt & Whitney R-985, 450 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Aerial application · Part 137
Registered owner
Larry Beseda Fertilizer & Chemical Inc.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · April 1, 2005 · 55 hours before
Departed
D02 · Osage, IA
Destination
Osage, IA
Airport
D02 · Osage Municipal Airport, runway 17, 3,400 × 50 ft, asphalt

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
60
Injuries
Serious
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
January 1, 2005
Seat
Center
Flight hours
7,000 total · 1,500 in this make and model · 6,500 as pilot in command · 30 in the last 90 days · 25 in the last 30 days · 10 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 10 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
81 °F, dew point 61 °F
Altimeter
30.12 inHg
Observed at
MCW, 20 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.

Other investigations on N6305W · 1

Matched to the same aircraft by N-number and date.