# NTSB CHI05LA213: Weatherly 620-B, N6305W, Osage, IA, August 6, 2005 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Limited investigation · Final report - Date: August 6, 2005, 17:15 local (22:15 UTC) - Place: Osage, IA - Coordinates: 43.470832, -92.835281 - Nearby events: https://openairdocs.org/map.md?lat=43.4708&lon=-92.8353&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: Serious injuries - Injuries: 1 serious - Status: Completed, report July 31, 2006 - Report: Approved by Office Director - Parties: FAA-Des Moines FSDO - NTSB case key (mKey): 62191 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI05LA213 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/62191/pdf - Page: https://openairdocs.org/ntsb/CHI05LA213 ## Probable cause The partial loss of engine power for an undetermined reason. Contributing factors were the wires and the trees. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, takeoff - reason for occurrence undetermined (cause) - In flight collision with object, takeoff - object - wire,transmission (contributing factor) - object - tree(s) (contributing factor) - In flight collision with terrain/water, descent - uncontrolled - terrain condition - ground - Fire, standing ## 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](https://openairdocs.org/deregistered/N6305W-2009-03-18), registration cancelled 2009-03-18, S/N 1563, built 1993 (OpenAirDocs) - Reported make and model: Weatherly 620-B - Registry model: [Weatherly 620B](https://openairdocs.org/model/weatherly-620b) (registry code 9630605) (OpenAirDocs) - Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 1563 - Airframe hours: 2100 - Engines: 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 ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 60; injuries: serious; 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 (OpenAirDocs). - [Accident 20050806020499A](https://openairdocs.org/incident/20050806020499A), Aug 6, 2005: Wthrly 620B, Osage, IA, Destroyed. (-23) Aircraft departed Osage Municipal Airport with full fuel tanks (approximately 90 gallons) and 200 gallons of liquid insecticide and was not able to gain… ## Other investigations on N6305W (1) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB FTW99LA149](https://openairdocs.org/ntsb/FTW99LA149), May 25, 1999: Weatherly 620B (N6305W), Whiteface, TX, substantial damage. Probable cause: The pilot's selection of unsuitable terrain for takeoff. Contributing to the accident was the soft ground and the standing water on the runway. From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.