Incident Canadair CRJ-100ER (CL-600-2B19) N868CA, Sunday 17 November 2002
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Date:Sunday 17 November 2002
Time:18:00
Type:Silhouette image of generic CRJ1 model; specific model in this crash may look slightly different    
Canadair CRJ-100ER (CL-600-2B19)
Owner/operator:Delta Connection
Registration: N868CA
MSN: 7427
Total airframe hrs:5127 hours
Engine model:General Electric CF-34-3A1
Fatalities:Fatalities: 0 / Occupants: 51
Other fatalities:0
Aircraft damage: None
Category:Incident
Location:Rockville, VA -   United States of America
Phase: En route
Nature:Passenger - Scheduled
Departure airport:Atlanta Hartsfield Jackson International Airport, GA (ATL/KATL)
Destination airport:Washington, DC (DCA)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
About 3 hours before takeoff, the dispatcher approved the flight release, which contained SIGMET Whiskey 8 for occasional severe turbulence from 14,000 feet to FL 280, and then went off duty. The turbulence box overlaid the departure airport and planned en route climb to altitude; however, the top of descent (TOD) and destination airport were clear of the turbulence. When the pilot printed the flight release, SIGMET Whiskey 8, had been replaced with SIGMET Whiskey 9. The turbulence box had moved east of the departure airport, and the TOD and destination airport remained clear of the turbulence box. The flight release also contained a single pilot report of severe turbulence from a Boeing 737 at FL 240, within the defined area of turbulence. Prior to departure, but after the flight release was signed by the pilot, the flight release was updated again, this time with SIGMET Whiskey 10. The turbulence box moved further east to cover the TOD and destination airport. Nearing his destination, the pilot was descended into the turbulence box defined by both SIGMET Whiskey 9 and Whiskey 10. These turbulences boxes ranged from Ottawa, Canada, to Florida, to Cleveland, Ohio. The pilot had turned on the seat belt sign, asked the flight attendant to be seated, and had already made an announcement for the passengers to remain seated as they were within 30 minutes of the destination airport. While descending through 17,800 feet, the flight encountered severe turbulence. The airplane was not equipped with ACARS. Flight crews were required to monitor dispatch frequency for updates, and encouraged to get weather updates en route. Weather updates were accomplished by direct radio contact between the dispatcher and pilots, or by the pilots accessing FAA facilities while en route. Although the operator had about 100 flights operating in the turbulence box, none were cancelled due to forecast turbulence, or reported to have encountered severe turbulence.

Probable Cause: The PIC's inadvertent encounter with turbulence while operating in an area of forecast occasional severe turbulence.

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: NYC03IA027
Status: Investigation completed
Duration:
Download report: Final report

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20021209X05575&key=1

Location

Revision history:

Date/timeContributorUpdates
03-Nov-2018 20:40 ASN Update Bot Added

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