# NTSB CEN10LA440: Beech F35, N3858B, Enid, OK, July 27, 2010 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: July 27, 2010, 10:00 local (15:00 UTC) - Place: Enid, OK - Coordinates: 36.429424, -97.970024 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=36.4294&lon=-97.9700&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Defining event: [Initial climb: Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report May 11, 2011 - Report: Approved by Office Director - NTSB office: Central Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 76774 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN10LA440 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/76774/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=76774 - Page: https://openairdocs.org/ntsb/CEN10LA440 ## Probable cause A loss of engine power for undetermined reasons. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Engine (reciprocating)](https://openairdocs.org/ntsb-findings/01058500): Aircraft › Aircraft power plant · Failure (probable cause); cases with it: [Beech F35, 3 cases](https://openairdocs.org/ntsb-findings/01058500/cases.md?model=1151514), [All aircraft, 497 cases](https://openairdocs.org/ntsb-findings/01058500/cases.md) - [Not determined](https://openairdocs.org/ntsb-findings/05000000): Not determined › Not determined · Unknown/Not determined (probable cause); cases with it: [Beech F35, 4 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md?model=1151514), [All aircraft, 2,247 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Initial climb: Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342) (defining event); cases with it: [Beech F35, 3 cases](https://openairdocs.org/ntsb-events/342/sequence.md?model=1151514), [All aircraft, 1,858 cases](https://openairdocs.org/ntsb-events/342/sequence.md) - [Approach: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341); cases with it: [Beech F35, 2 cases](https://openairdocs.org/ntsb-events/341/sequence.md?model=1151514), [All aircraft, 3,820 cases](https://openairdocs.org/ntsb-events/341/sequence.md) - [Landing: Off-field or emergency landing](https://openairdocs.org/ntsb-events/440); cases with it: [Beech F35, 3 cases](https://openairdocs.org/ntsb-events/440/sequence.md?model=1151514), [All aircraft, 3,365 cases](https://openairdocs.org/ntsb-events/440/sequence.md) ## Analysis The pilot reported that during the initial climb out, the engine experienced a partial loss of power which prompted his decision to return to the airport for a landing. While maneuvering to land at the airport, the engine completely stopped producing power. The airplane landed with the landing gear retracted in a wheat field near the runway. A postaccident examination of the airplane by a Federal Aviation Administration inspector revealed no evidence of preimpact anomalies with the airplane or the engine. ## Factual narrative On July 27, 2010, approximately 1000 central daylight time, a single-engine Beech F35, N3858B, owned and operated by a private individual, was substantially damaged during a gear up forced landing following a loss engine power near Enid, Oklahoma. The commercial pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed and no flight plan was filed for the 14 Code of Federal Regulations Part 91 personal flight. The local flight had departed the Enid Woodring Municipal Airport (WDG), Enid, Oklahoma approximately 0950. According to the pilot, shortly after takeoff the airplane’s engine began to run rough. The pilot elected to return to WDG; however, prior to landing the engine experienced a total loss of power. With the gear in the retracted position, the pilot landed east of the runway in a wheat field. Pictures provided to the NTSB investigator-in-charge (IIC), revealed that the airplane’s fuselage sustained structural damage during the mishap. A Federal Aviation Administration (FAA) inspector examined the airplane following the accident. The inspector was not able to determine the reason for the loss of engine power. ## Aircraft - Registration: [N3858B](https://openairdocs.org/aircraft/N3858B), registered now, S/N D-4125, built 1955 (OpenAirDocs) - Reported make and model: BEECH F35 - Registry model: [Beech F35](https://openairdocs.org/model/beech-f35) (registry code 1151514) (OpenAirDocs) - Registry engine: [Continental E225 series](https://openairdocs.org/engine/continental-e225-series) (registry code 17015, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: D-4125 - Engines: CONT MOTOR E225 SERIES 225 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Departed: KWDG, Enid, OK - Destination: KWDG, Enid, OK - Airport: KWDG, Woodring Regional ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 57; injuries: none; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; seat: left ## Weather - Conditions: Visual (VMC), Day - Wind: 190° at 6 knots - Visibility: 10 statute miles - Temperature: 81 °F, dew point 68 °F - Altimeter: 30.04 inHg - Observed at: KEND, 7 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 20100727043509A](https://openairdocs.org/incident/20100727043509A), Jul 27, 2010: Beech F35, Enid, OK, Substantial damage. Aircraft was climbing shortly after takeoff, engine started running rough. Pilot stated he switched fuel tanks, checked mags but engine continued to lose power… ## Other investigations on N3858B (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 OAK76DVA88](https://openairdocs.org/ntsb/OAK76DVA88), Sep 10, 1976: Beech F35 (N3858B), Visalia, CA, substantial damage ## Docket (2 files) The files NTSB released with the investigation on February 1, 2011, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=76774. 688 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1: Not obtained (item 1, .PDF, 14 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40340155&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1%3A%20Not%20obtained-Master.PDF - Photo: Side view of airplane (item 2, .PDF, 673 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40342101&FileExtension=.PDF&FileName=Photo%3A%20Side%20view%20of%20airplane-Master.PDF 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.