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Date: | Tuesday 25 February 2003 |
Time: | 18:16 LT |
Type: | Boeing 777-223 |
Owner/operator: | American Airlines |
Registration: | N790AN |
MSN: | 30251/287 |
Year of manufacture: | 2000 |
Total airframe hrs: | 9809 hours |
Engine model: | Rolls-Royce Trent 892-17 |
Fatalities: | Fatalities: 0 / Occupants: 133 |
Aircraft damage: | None |
Category: | Accident |
Location: | Miami International Airport, FL (MIA/KMIA) -
United States of America
|
Phase: | Unknown |
Nature: | Passenger - Scheduled |
Departure airport: | Dallas/Fort Worth International Airport, TX (DFW/KDFW) |
Destination airport: | Miami International Airport, FL (MIA/KMIA) |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:While descending into Miami, the flight crew began deviating "well" south of a few small cumulous developments. They had begun reducing speed to turbulence penetration "prior to encountering a few pockets of light chop at about FL240." The captain gave a "PA to the FA'S and passengers leaving FL180, asking that the cabin be prepared for landing early, due to possible chop during our approach." They encountered a very brief pocket of moderate chop. The seatbelt sign was on, the cabin crew was in the process of securing the cabin for landing, and the purser had made the announcement for passengers to prepare for landing right after the captain's pre-landing announcement. Several minutes after the event, the number one flight attendant, advised the captain that two of the flight attendants in the aft part of the airplane had been injured during the turbulence event. A convective SIGMET was valid for Florida and coastal waters at the time of the turbulence encounter. Radar images from the Miami Weather Surveillance Radar (WSR-88D) identified multiple storm cells in the area at the time of the turbulence encounter. The radar data indicated that the core intensity of these cells was strong to intense (40 to 50 dBZ). A radar image taken about the time of the turbulence encounter shows the airplanes path came about five nautical miles from the core of one cell and three nautical miles from the core of a second cell. During this event, the airplane experienced a 2.04 g vertical acceleration load, 6 degree of left roll and a pitch change from -0.4 degrees to -2.1 degrees.
Probable Cause: The flight crew's inadvertent encounter with turbulence while attempting to maneuver through an area of convective activity during descent.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | MIA03LA067 |
Status: | Investigation completed |
Duration: | 1 year and 8 months |
Download report: | Final report |
|
Sources:
NTSB MIA03LA067
History of this aircraft
Other occurrences involving this aircraft
11 March 2005 |
N790AN |
American Airlines |
0 |
Buenos Aires/Ezeiza-Ministro Pistarini Airport, BA (EZE/SAEZ) |
|
unk |
28 February 2024 |
N790AN |
American Airlines |
0 |
E of Boston, MA |
|
min |
Windscreen cracks or failure |
Location
Revision history:
Date/time | Contributor | Updates |
25-Mar-2024 10:28 |
ASN Update Bot |
Added |
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