# NTSB CEN11CA006: Rockwell International S-2R, N8432V, Texarkana, AR, October 5, 2010 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: October 5, 2010, 10:00 local (15:00 UTC) - Place: Texarkana, AR - Coordinates: 33.453609, -93.991111 - Nearby events: https://openairdocs.org/map.md?lat=33.4536&lon=-93.9911&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff: Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report March 16, 2011 - Report: Approved by Office Director - NTSB office: Central Region - Parties: FAA FSDO - NTSB case key (mKey): 77500 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN11CA006 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/77500/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=77500 - Page: https://openairdocs.org/ntsb/CEN11CA006 ## Probable cause The loss of engine power due to cracked engine cylinder. ## 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: [Rockwell International S-2R, 1 case](https://openairdocs.org/ntsb-findings/01058500/cases.md?model=7630202), [All aircraft, 497 cases](https://openairdocs.org/ntsb-findings/01058500/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Takeoff: Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342) (defining event); cases with it: [Rockwell International S-2R, 7 cases](https://openairdocs.org/ntsb-events/342/sequence.md?model=7630202), [All aircraft, 1,858 cases](https://openairdocs.org/ntsb-events/342/sequence.md) - [Emergency descent: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Rockwell International S-2R, 20 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=7630202), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot departed from a private airstrip for a local aerial application flight. Shortly after takeoff, the engine experienced a loss of power and the pilot elected to turn towards a field and perform a forced landing. During the landing, the airplane received major structural damage. A postaccident examination of the engine revealed that a cylinder on the radial engine was cracked, resulting in the loss of engine power. No other anomalies with the airplane were found. At the time this report was completed, the pilot had not submitted NTSB form 6120.1, Pilot/Operator Accident/Incident Report, as requested. ## Factual narrative The commercial pilot departed from a private airstrip for a local aerial application flight. Shortly after take-off, the engine lost power and the pilot elected to turn towards a field for the forced landing. During the landing, the airplane received major structural damage. A post-accident examination of the engine revealed that a cylinder on the radial engine was cracked resulting in the loss of engine power. No other anomalies with the airplane were found. At the time this report was completed, the pilot had not submitted NTSB form 6120.1, Pilot/Operator Accident/Incident Report as requested ## Aircraft - Registration: [N8432V](https://openairdocs.org/deregistered/N8432V-2013-05-14), registration cancelled 2013-05-14, S/N 2192R, built 1976 (OpenAirDocs) - Reported make and model: ROCKWELL INTERNATIONAL S-2R - Registry model: [Rockwell International S-2R](https://openairdocs.org/model/rockwell-international-s-2r) (registry code 7630202) (OpenAirDocs) - Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 2192R - Engines: P&W R1340 SERIES 600 horsepower reciprocating - Damage: Substantial damage - Flight: Aerial application, Part 137 - Operator: WaterOak Aviation, LLC - Registered owner: WaterOak Aviation, LLC - Airworthiness certificate: Special, Restricted (Special) - Departed: Texarkana, AR - Destination: Texarkana, AR - Flight plan: Unknown ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 25; injuries: none; commercial; airplane ratings: single-engine land; medical: class 2, without waivers/limitations; seat: single ## Weather - Conditions: Visual (VMC), Day - Wind: 80° at 5 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 57 °F, dew point 39 °F - Altimeter: 30.42 inHg - Observed at: KTXK ## 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 20101005047769A](https://openairdocs.org/incident/20101005047769A), Oct 5, 2010: Rockwell In S-2R, Texarkana, AR, Substantial damage. On October 5, 2010, at 08:12 CDT a Rockwell international S-2R "thrush", N8432V, executed a forced landing immediately after liftoff due to sudden loss of… ## Docket (1 files) The files NTSB released with the investigation on November 4, 2010, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=77500. 28 KB in all. - Weather Reports and Records (item 1, .PDF, 28 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40338973&FileExtension=.PDF&FileName=Weather%20Reports%20and%20Records-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.