# NTSB CEN09CA133: Brantly B-2B, N2252U, Cement, OK, January 14, 2009 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: January 14, 2009, 11:35 local (17:35 UTC) - Place: Cement, OK - Coordinates: 34.925834, -98.135002 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=34.9258&lon=-98.1350&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-flare/touchdown: Hard landing](https://openairdocs.org/ntsb-events/092) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report April 15, 2009 - Report: Approved by Office Director - NTSB office: Central Region - NTSB case key (mKey): 73237 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN09CA133 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/73237/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=73237 - Page: https://openairdocs.org/ntsb/CEN09CA133 ## Probable cause The pilot's failure to maintain proper airspeed and descent rate during approach, which resulted in a hard landing. Contributing to the accident were the nearby power lines. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: airspeed](https://openairdocs.org/ntsb-findings/01062010): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Brantly B-2B, 1 case](https://openairdocs.org/ntsb-findings/01062010/cases.md?model=1440506), [All aircraft, 1,681 cases](https://openairdocs.org/ntsb-findings/01062010/cases.md) - [Performance/control parameters: descent rate](https://openairdocs.org/ntsb-findings/01062037): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Brantly B-2B, 1 case](https://openairdocs.org/ntsb-findings/01062037/cases.md?model=1440506), [All aircraft, 242 cases](https://openairdocs.org/ntsb-findings/01062037/cases.md) - [Object/animal/substance: wire](https://openairdocs.org/ntsb-findings/03022032): Environmental issues › Physical environment · Decision related to condition (probable cause); cases with it: [Brantly B-2B, 1 case](https://openairdocs.org/ntsb-findings/03022032/cases.md?model=1440506), [All aircraft, 588 cases](https://openairdocs.org/ntsb-findings/03022032/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-flare/touchdown: Hard landing](https://openairdocs.org/ntsb-events/092) (defining event); cases with it: [Brantly B-2B, 4 cases](https://openairdocs.org/ntsb-events/092/sequence.md?model=1440506), [All aircraft, 2,102 cases](https://openairdocs.org/ntsb-events/092/sequence.md) - [Landing-flare/touchdown: Roll over](https://openairdocs.org/ntsb-events/097); cases with it: [Brantly B-2B, 3 cases](https://openairdocs.org/ntsb-events/097/sequence.md?model=1440506), [All aircraft, 261 cases](https://openairdocs.org/ntsb-events/097/sequence.md) ## Analysis The helicopter pilot stated that he was performing a landing to a field by his workshop and was fast during the final approach. He landed hard to avoid overshooting his landing and hitting nearby power lines. The left skid dug in and the helicopter rolled over. Examination of the helicopter revealed that all three main blades were damaged, the tail rotor blades were damaged, and the tail boom was bent. ## Factual narrative The pilot stated he was performing a landing to a field by his workshop and was fast during the final approach. He landed hard to avoid overshooting his landing and hitting nearby power lines. The left skid dug in and the helicopter rolled over. Examination of the helicopter revealed all three main blades were damaged, the tail rotor blades were damaged and the tail boom was bent. ## Aircraft - Registration: [N2252U](https://openairdocs.org/aircraft/N2252U), registered now, S/N 411 (OpenAirDocs) - Reported make and model: BRANTLY B-2B - Registry model: [Brantly B-2B](https://openairdocs.org/model/brantly-b-2b) (registry code 1440506) (OpenAirDocs) - Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs) - Category: Helicopter - Serial number: 411 - Engines: LYCOMING O&VO-360 SER 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Robert H Jenkins - Registered owner: Sehorne Paul F - Airworthiness certificate: Standard, Normal - Departed: N/A, Cement, OK - Destination: N/A, Cement, OK - Flight plan: Unknown - Airport: N/A, Personal Landing Zone ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 74; injuries: minor; commercial; medical: class 3, with waivers/limitations; flight hours: 5,500 total, 5,500 in this make and model ## Weather - Conditions: Visual (VMC), Day ## 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 20090114000429A](https://openairdocs.org/incident/20090114000429A), Jan 14, 2009: Hynes B2B, Cement, OK, Substantial damage. (-23) The pilot was landing during a test flight off of rented property approximately 2 minutes duration. One skid touched and the pilot over reacted with the… ## Other investigations on N2252U (2) 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 ATL80FLA03](https://openairdocs.org/ntsb/ATL80FLA03), May 10, 1980: Brantley B-2B (N2252U), Valdosta, GA, substantial damage - [NTSB FTW66A0012](https://openairdocs.org/ntsb/FTW66A0012-176332), Sep 15, 1965: Brantly B2B (N2252U), Yukon, OK, substantial damage ## Docket (1 files) The files NTSB released with the investigation on February 18, 2009, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=73237. 18 KB in all. - Pilot Statement (item 1, .PDF, 18 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40308167&FileExtension=.PDF&FileName=Pilot%20Statement-Redacted.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.