Aircraft Accident/Incident Report

Knox, Indiana 46534
Tuesady, August 7, 2007 17:40 CDT

NTSB Narrative Summary Released at Completion of Accident

The airplane encountered turbulence during descent flight which resulted in a serious injury to an unseated flight attendant. The operator report stated that the flight attendant was returning to her jumpseat when the injury occurred. Flight data recorder data showed that the airplane experienced a vertical upset of 2.5 G's.

NTSB Probable Cause Narrative

The in-flight encounter with turbulence.

Event Information

Type of Event Accident
Event Date 8/7/2007
Event Day of the Week Tuesday
Time of Event 1740
Event Time Zone Central Daylight Time
Event City Knox
Event State INDIANA
Event Country --
Zipcode of the event site 46534
Event Date Year 2007
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 411919N
Event Location Longitude 0863857W
Event Location Airport --
Event Location Nearest Airport ID --
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Unknown
Time of the weather observation 1851 Central Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID ORD
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 4000
Sky/Lowest/Cloud Conditions Few
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 3
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 260
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 10
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.77
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 38
Injury Total Serious 1
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 24113
NTSB Notification Source FAA
NTSB Notification Date Aug 7 2007 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Aug 28 2008 3:01PM
User who most recently changed record NTSB\johb
Basic weather conditions Visual Meteorological Cond
FAA District Office O'Hare FSDO, Chicago, IL

Aircraft Involved

Aircraft #1

Aircraft Registration Number N810HK
NTSB Number CHI07LA252
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 121: Air Carrier
Type of Flight Plan filed IFR
Flight plan Was Activated? Yes
Damage None
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Embraer
Aircraft Model EMB-145LR
Aircraft Series Identifier --
Aircraft Serial Number 145231
Certified Max Gross Weight 48501
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 53
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Aug 1 2007 12:00AM
Airframe hours since last inspection --
Airframe Hours 16112
ELT Installed Yes
ELT Activated --
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name TRANS STATES AIRLINES INC
Aircraft Owner Street Address 11495 Natural Bridge Road, Ste. 340
Aircraft Owner City Bridgeton
Aircraft Owner State MO
Aircraft Owner Country USA
Aircraft Owner Zipcode 63044
Operator is an individual? No
Operator Name --
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City --
Operator State --
Operator Country --
Operator Zip code --
Operator Code RAIA
Owner has at least one certificate --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) --
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code ROA
Departure City ROANOKE
Departure State VA
Departure Country USA
Departure Time 1655
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code ORD
Destination City CHICAGO
Destination State IL
Destination Country USA
Specific Phase of Flight Descent
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Aug 13 2008 3:20PM
User who most recently changed record BOWL
Since inspection or accident Time of Accident
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --