# NTSB ERA11CA327: Bombardier CL600-2D24, N929LR, Florence, SC, June 6, 2011 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Data collection · Final report - Date: June 5, 2011, 21:16 local (Jun 6, 2011, 01:16 UTC) - Place: Florence, SC - Coordinates: 34.071109, -79.889442 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=34.0711&lon=-79.8894&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Defining event: [Enroute-descent: Turbulence encounter](https://openairdocs.org/ntsb-events/360) - Highest injury: Serious injuries - Injuries: 1 serious, 88 uninjured - Status: Completed, report October 17, 2011 - Report: Approved by Office Director - NTSB office: Eastern Region Aviation - Parties: FAA/FSDO - NTSB case key (mKey): 79316 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ERA11CA327 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/79316/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=79316 - Page: https://openairdocs.org/ntsb/ERA11CA327 ## Probable cause The inadvertent in-flight encounter with turbulence, resulting in an injury to a cabin attendant. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Turbulence: convective turbulence](https://openairdocs.org/ntsb-findings/03032020): Environmental issues › Conditions/weather/phenomena · Effect on personnel (probable cause); cases with it: [Bombardier CL-600-2D24, 4 cases](https://openairdocs.org/ntsb-findings/03032020/cases.md?model=1390016), [All aircraft, 145 cases](https://openairdocs.org/ntsb-findings/03032020/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Enroute-descent: Turbulence encounter](https://openairdocs.org/ntsb-events/360) (defining event); cases with it: [Bombardier CL-600-2D24, 4 cases](https://openairdocs.org/ntsb-events/360/sequence.md?model=1390016), [All aircraft, 423 cases](https://openairdocs.org/ntsb-events/360/sequence.md) ## Analysis The captain stated that he briefed the flight attendants prior the flight that it would be bumpy since they were flying around thunderstorms. While descending through 15,000 feet, the airplane encountered moderate turbulence for several seconds. According to a flight attendant, they were informing the passengers of their gates for the next connection in the destination terminal when the airplane encountered the turbulence. One of the flight attendants sustained a serious injury while the other was not injured. The airplane was not damaged and landed uneventfully at the destination airport. ## Factual narrative According to the captain, he briefed the flight attendants prior the flight that it would be bumpy since they were flying around thunderstorms. While descending through 15,000 feet, the airplane encountered moderate turbulence for several seconds. According to a flight attendant, they were informing the passengers of their gates for the next connection in the destination terminal, when the airplane encountered the turbulence. One of the flight attendants sustained a serious injury, while the other was not injured. The airplane was not damaged and landed uneventfully at the destination airport. ## Aircraft - Registration: [N929LR](https://openairdocs.org/aircraft/N929LR), registered now, S/N 15029, built 2005 (OpenAirDocs) - Reported make and model: BOMBARDIER INC CL600-2D24 - Registry model: [Bombardier CL-600-2D24](https://openairdocs.org/model/bombardier-cl-600-2d24) (registry code 1390016) (OpenAirDocs) - Registry engine: [GE CF34 series](https://openairdocs.org/engine/ge-cf34-series) (registry code 30015, turbo-fan) (OpenAirDocs) - Category: Airplane - Serial number: 15029 - Airframe hours: 16405 - Engines: GE CF34 SERIES 9140 lbs thrust turbo fan; GE CF34 SERIES 9140 lbs thrust turbo fan - Damage: No damage - Flight: Part 121 - Operator: Mesa Airlines, doing business as US Airways Express - Registered owner: Wells Fargo Bank Northwest Na Trustee - Airworthiness certificate: Standard, Transport - Last inspection: Continuous airworthiness, June 5, 2011 - Departed: SAV, Savahnna, GA - Destination: CLT, Charlotte, NC - Flight plan: IFR - Airport: None ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 43; injuries: none; flight instructor, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, without waivers/limitations; last flight review February 25, 2011; seat: left; flight hours: 11,600 total, 3,845 in this make and model, 9,750 as pilot in command, 193 in the last 90 days, 56 in the last 30 days, 6 in the last 24 hours - Co-pilot; age 46; injuries: none; commercial, airline transport, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, without waivers/limitations; last flight review August 20, 2010; seat: right; flight hours: 5,285 total, 563 in this make and model ## Weather - Conditions: Visual (VMC), Night - Wind: 40° at 5 knots - Visibility: 10 statute miles - Temperature: 84 °F, dew point 70 °F - Altimeter: 29.92 inHg - Observed at: FLO ## 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 20110605015789A](https://openairdocs.org/incident/20110605015789A), Jun 5, 2011: Bombardier Inc CL600-2D24, Bishopville, SC, No damage. Flight from sav to clt. Around the vicinity of promm intersection the crew was given a descent to 14,000 feet by ATC. The descent took the airplane into the… ## Docket (3 files) The files NTSB released with the investigation on August 22, 2011, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=79316. 795 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 610 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40349726&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - Crew Statements (item 2, .PDF, 93 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40349729&FileExtension=.PDF&FileName=Crew%20Statements-Master.PDF - Weather Information (item 3, .PDF, 92 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40349727&FileExtension=.PDF&FileName=Weather%20Information-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.