Aircraft Accident/Incident Report

Pioneer, Louisiana 75603
Monday, June 28, 2010 17:52 CDT

NTSB Narrative Summary Released at Completion of Accident

The commercial flight was cruising at an altitude of 38,000 feet when the flight crew made a public announcement to the passengers (and a separate call to the flight attendant) that they may encounter turbulence, and the fasten seatbelt sign was turned on. The captain said they entered clouds and the flight was smooth for about 10 minutes when they noticed a very small red return (thunderstorm cell)on the radar about 5 miles in front of them. The crew did not have enough time to take evasive action and they penetrated the cell, encountering moderate rain with a strong updraft followed by one instance of a severe downdraft. The autopilot disengaged and the captain assumed control of the airplane. Shortly after, the flight attendant called on the interphone and said that she was assisting an elderly passenger in the lavatory when the upset occurred and they were both seriously injured. The captain immediately declared an emergency and landed without further incident. Weather Surveillance Radar (WSR) imagery identified a discrete cell of strong reflectivity values coincident with the airplane's position at the time of the turbulence event. A review of recorded weather data from two separate air traffic control centers handling the flight showed that moderate to extreme intensity precipitation existed ahead of the airplane for an extended period. However, the controllers did not recall seeing any displayed precipitation in the accident location, although they did recall seeing precipitation in other locations around the area. Review of display settings in use by the controllers showed no reason that the weather would not have been displayed, and there was no indication of a system malfunction. Review of ATC communications between the controllers and the flight crew revealed there were no discussions of the precipitation and thunderstorm activity ahead of the flight as required per Federal Aviation Administration (FAA) Order 7110.65, paragraph 2-6-4, "Weather and Chaff Services."

NTSB Probable Cause Narrative

The inadvertent encounter with convective weather during cruise flight. Contributing to the accident was the flight crew's failure to detect and avoid the thunderstorm cell earlier in the flight, and the failure of air traffic controllers to provide the convective weather information to the flight crew.

Event Information

Type of Event Accident
Event Date 6/28/2010
Event Day of the Week Monday
Time of Event 1752
Event Time Zone Central Daylight Time
Event City PIONEER
Event State LOUISIANA
Event Country --
Zipcode of the event site 75603
Event Date Year 2010
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 322301N
Event Location Longitude 0944225W
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 Pilot
Time of the weather observation 1729 Central Daylight Time
Direction of event from weather observation facility (degrees) 270
Weather Observation Facility ID BQP
Elevation of weather observation facility 168
Distance of event from weather observation facility (units?) 19
Time Zone of the weather observation CDT
Lighting Conditions Dusk
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
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) 37
Dew Point at event time (in degress fahrenheit) 23
Wind Direction (degrees magnetic) 100
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 7
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.81
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 3
Injury Total None 40
Injury Total Serious 2
Injury Total All 5
Investigating Agency NTSB
NTSB Docket Number (internal use) 29012
NTSB Notification Source SWR ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Nov 8 2011 10:06AM
User who most recently changed record johb
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N601DW
NTSB Number CEN10LA363
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 145046
Certified Max Gross Weight --
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats 2
Cabin Crew Seats 1
Passenger Seats 50
Total number of seats on the aircraft 55
Number of Engines 2
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Jun 26 2010 12:00AM
Airframe hours since last inspection --
Airframe Hours 28747
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name AMERICAN EAGLE AIRLINES INC
Aircraft Owner Street Address 4333 AMON CARTER BLVD MD 5494
Aircraft Owner City FORT WORTH
Aircraft Owner State TX
Aircraft Owner Country USA
Aircraft Owner Zipcode 76155
Operator is an individual? No
Operator Name AMERICAN EAGLE AIRLINES INC
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 4333 AMON CARTER BLVD MD 5494
Operator City FORT WORTH
Operator State TX
Operator Country USA
Operator Zip code 76155
Operator Code AEAA
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
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 GSO
Departure City Greensboro
Departure State NY
Departure Country USA
Departure Time 1605
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code DFW
Destination City Dallas
Destination State TX
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Sep 23 2011 12:53PM
User who most recently changed record yeal
Since inspection or accident Time of Accident
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --