# NTSB CHI99LA316: Piper PA-23-250, N6592Y, Osceola, WI, August 28, 1999 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: August 28, 1999, 18:30 local (23:30 UTC) - Place: Osceola, WI - Coordinates: 45.309032, -92.689392 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=45.3090&lon=-92.6894&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report June 21, 2000 - Report: Approved by Office Director - NTSB case key (mKey): 47245 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI99LA316 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/47245/pdf - Page: https://openairdocs.org/ntsb/CHI99LA316 ## Probable cause the pilot's improper preflight decision to attempt a takeoff with one engine inoperative. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, takeoff - roll/run - 1 engine - not activated - preflight planning/preparation - improper, pilot in command (cause) - On ground/water encounter with terrain/water, takeoff - roll/run - terrain condition - other - terrain condition - berm ## Analysis The pilot said it took 2 hours to start the right engine, and during takeoff the right engine lost power. A witness saw the pilot and the airplane on the ramp before the accident. The witness stated that the pilot said the starter was inoperative for the right engine and it would not start the right engine. The witness saw the accident airplane going down runway 10 with the right engine not running. He had a clear view of the first 700 feet of runway 10 and that the right engine's propeller blades were 'stationary' at the '4 and 10 o'clock positions.' He said that the airplane's left engine 'revved' for takeoff and the airplane rolled down the runway. He said that the airplane moved to the right side of the runway during the takeoff roll, that he noticed the airplane's power was reduced, that the airplane was realigned with the runway's centerline, and that the left engine 'revved' up again. Examination of the accident scene revealed three trails were found in the terrain past the paved departure end of the runway leading up to a telephone switching box and a berm. ## Factual narrative On August 28, 1999, at 1830 central daylight time, a Piper PA-23-250, N6592Y, piloted by a commercial rated pilot, sustained substantial damage on impact with objects and terrain during a takeoff from runway 10 (3,862 feet X 75 feet, dry/asphalt) at L. O. Simenstad Municipal Airport, Osceola, Wisconsin. The pilot reported no injuries. Visual meteorological conditions prevailed during the 14 CFR Part 91 flight. The personal flight was not operating on a flight plan. The flight was originating at the time of the accident with an intended destination of Lake Elmo Airport, St Paul, Minnesota. In his written statement, the pilot said that he tried for 2 hours to start the right engine. He stated that he hand propped the right engine, the engine started, the engine "ops ck'd normal", and he taxied the airplane to runway 10. He said he did a rolling take off on runway 10 and rotated at 80 knots. The pilot stated that at approximately 90 mph, the right engine started to lose power and that he tried to land on the remaining runway. The pilot said that he reduced power on both engines to idle. He stated the right engine stopped. He said that there was not enough runway to try to land on and that he executed a go around on the left engine at full power. He said that he "descended to about five feet in ground" [effect] and contacted a telephone switching box past the departure end of runway 10. The pilot said that after the contact with the telephone switching box, he was unable to continue the climb and "set the airplane down in a cornfield." He said that the gear was sheared off, the left stabilizer was damaged, the wings were bent, and the fuselage was wrinkled during the contact with objects and terrain. A witness said that he saw the pilot and the airplane on the ramp before the accident. The witness states that the pilot said the starter was inoperative for the right engine and the starter would not start the right engine. He said that he saw the accident airplane going down runway 10 with the right engine not running. The witness said that he had a clear view of the first 700 feet of runway 10 and that the right engine's propeller blades were "stationary" at the "4 and 10 o'clock positions" during this beginning part of the takeoff roll. He said that the airplane's left engine "revved" for takeoff and the airplane rolled down the runway. He said that the airplane moved to the right side of the runway during the takeoff roll, that he noticed the airplane's power was reduced, that the airplane was realigned with the runway's centerline, and that the left engine "revved" up again. Three trails were found in the terrain past the paved departure end of the runway leading up to a telephone switching box and a berm. Fence poles, located between the telephone switching box and the point the airplane came to rest, were found bent in the direction the airplane traveled. The attached fencing material was found laying on the ground also in that direction. ## Aircraft - Registration: [N6592Y](https://openairdocs.org/deregistered/N6592Y-2018-01-25), registration cancelled 2018-01-25, S/N 27-4389, built 1969 (OpenAirDocs) - Reported make and model: Piper PA-23-250 - Registry model: [Piper PA-23-250](https://openairdocs.org/model/piper-pa-23-250) (registry code 7102308) (OpenAirDocs) - Registry engine: [Lycoming TI0-540 series](https://openairdocs.org/engine/lycoming-ti0-540-series) (registry code 41533, turbo-prop) (OpenAirDocs) - Category: Airplane - Serial number: 27-4389 - Airframe hours: 4185 - Engines: Lycoming IO-540-C4B5 250 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: John James Watts - Airworthiness certificate: Standard, Normal - Last inspection: Annual, September 15, 1998, 10 hours before - Departed: OEO, WI - Destination: 21D, ST PAUL, MN - Airport: OEO, L. O. Simenstad Minicipal, runway 6, 3,862 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 40; flight engineer, commercial, flight instructor; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 3,250 total, 500 in this make and model, 3,200 as pilot in command, 69 in the last 90 days, 25 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 30° at 5 knots - Visibility: 10 statute miles - Lowest ceiling: 25,000 ft broken - Temperature: 79 °F, dew point 54 °F - Altimeter: 30.00 inHg - Observed at: MSP, 34 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 19990828025489A](https://openairdocs.org/incident/19990828025489A), Aug 28, 1999: Piper PA23250, Osceola, WI, Substantial damage. (.19) On August 28, 1999, at 1830 central daylight time, a Piper PA-23-250, N6592Y, piloted and operated by a commercially rated pilot, sustained substantial… 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.