# NTSB WPR13CA016: Boeing 737-3H4, N625SW, Las Vegas, NV, October 17, 2012 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Data collection · Final report - Date: October 16, 2012, 18:30 local (Oct 17, 2012, 01:30 UTC) - Place: Las Vegas, NV - Coordinates: 36.080001, -115.152221 - Nearby events: https://openairdocs.org/map.md?lat=36.0800&lon=-115.1522&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Defining event: [Enroute-cruise: Cabin safety event](https://openairdocs.org/ntsb-events/110) - Highest injury: Serious injuries - Injuries: 1 serious, 85 uninjured - Status: Completed, report January 22, 2013 - Report: Approved by Office Director - NTSB office: Western Pacific Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 85360 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR13CA016 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/85360/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=85360 - Page: https://openairdocs.org/ntsb/WPR13CA016 ## Probable cause The flight attendant's encounter with an unseen obstruction in the aisle, which resulted in a fall. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Physical workspace: positioning/available space](https://openairdocs.org/ntsb-findings/03041010): Environmental issues › Task environment · Effect on personnel (probable cause); cases with it: [Boeing 737-3H4, 1 case](https://openairdocs.org/ntsb-findings/03041010/cases.md?model=138447K), [All aircraft, 11 cases](https://openairdocs.org/ntsb-findings/03041010/cases.md) - [Impairment/incapacitation: illness/injury](https://openairdocs.org/ntsb-findings/02012010): Personnel issues › Physical · Cabin crew; cases with it: [Boeing 737-3H4, 1 case](https://openairdocs.org/ntsb-findings/02012010/cases.md?model=138447K), [All aircraft, 34 cases](https://openairdocs.org/ntsb-findings/02012010/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Enroute-cruise: Cabin safety event](https://openairdocs.org/ntsb-events/110) (defining event); cases with it: [Boeing 737-3H4, 3 cases](https://openairdocs.org/ntsb-events/110/sequence.md?model=138447K), [All aircraft, 151 cases](https://openairdocs.org/ntsb-events/110/sequence.md) ## Analysis Southwest Airlines personnel reported that, during cruise flight between Oklahoma City, Oklahoma, and Las Vegas, Nevada, a flight attendant who was conducting beverage service tripped over a passenger's leg that was protruding into the aisle. The flight attendant fell and felt pain in her left knee and foot. She did not resume her flight attendant duties during the flight. After landing she went to a local hospital, where medical personnel determined that she had a fractured metatarsal in her left foot. There were no mechanical difficulties or anomalies with the airplane during the flight, and the event was not related to turbulence. ## Factual narrative Southwest Airlines reported that during a flight from Oklahoma City, Oklahoma, to Las Vegas, Nevada, while at cruise, a flight attendant that was conducting beverage service tripped over a passenger's leg that was protruding into the isle. The flight attendant fell and felt pain in her knee and foot. She did not resume her duties during the flight. After landing she self reported to a local hospital where it was determined that she had a metatarsal fractured in her left foot. There were no mechanical difficulties or anomalies with the airplane during the flight and the event was not related to turbulence. ## Aircraft - Registration: [N625SW](https://openairdocs.org/aircraft/N625SW), registered now, S/N 27701, built 1996 (OpenAirDocs) - Reported make and model: BOEING 737-3H4 - Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (registry code 138447K) (OpenAirDocs) - Registry engine: [CFM International CFM56 series](https://openairdocs.org/engine/cfm-international-cfm56-series) (registry code 13802, turbo-fan) (OpenAirDocs) - Category: Airplane - Serial number: 27701 - Airframe hours: 53645 - Engines: GE/CFM CFM56 SERIES 22000 lbs thrust turbo fan; GE/CFM CFM56 SERIES 22000 lbs thrust turbo fan - Damage: No damage - Flight: Part 121 - Operator: Southwest Airlines - Registered owner: US Bank Na Trustee - Airworthiness certificate: Standard, Transport - Last inspection: Continuous airworthiness, October 14, 2012 - Departed: KOKC, Oklahoma City, OK - Destination: KLAS, Las Vegas, NV - Flight plan: IFR - Airport: KLAS, Las Vegas ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 58; injuries: none; flight instructor, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, with waivers/limitations; last flight review September 12, 2012; seat: left; flight hours: 20,600 total, 5,000 in this make and model - Co-pilot; age 51; injuries: none; commercial, airline transport, military; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, with waivers/limitations; last flight review October 12, 2012; seat: right; flight hours: 6,250 total, 1,400 in this make and model ## Weather - Conditions: Visual (VMC), Day - Wind: 170° at 3 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 81 °F, dew point 45 °F - Altimeter: 29.73 inHg - Observed at: KLAS ## Docket (1 files) The files NTSB released with the investigation on November 14, 2012, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=85360. 910 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 910 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40381145&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-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.