Event Details

Title:Pitch control problems, Boeing 767-300, March 27, 2001
Micro summary:This Boeing 767-300 encountered pitch control difficulties when on approach.
Event Time:2001-03-27 at 1132 UTC
File Name:2001-03-27-US.pdf
Publishing Agency:National Transportation Safety Board (NTSB)
Publishing Country:USA
Report number:DCA01WA032
Site of event:Paris, France
Departure:Dallas-Fort Worth International Airport, Dallas & Fort Worth, Texas, USA
Destination:Paris Charles de Gaulle Airport (Roissy Airport), Paris, France
Airplane Type(s):Boeing 767-300ER
Flight Phase:Approach
Operator(s):American Airlines
Type of flight:Revenue
Serious Injuries:
Other Injuries:0
Executive Summary:

NTSB short summary:

NTSB synopsis:

NTSB factual narrative text:

American Airlines flight 48, a Boeing 767-300, experienced pitch control difficulties while on approach for landing at Charles de Gaulle International Airport (CDG), Paris, France. None of the 3 flight crew, 10 cabin crew, and 124 passengers on board the airplane were injured. The flight landed about 1132 local time. The flight crew indicated that the elevators appeared to be jammed and were not responsive to control column inputs and that stabilizer trim was used to maintain proper pitch control. Both flight recorders were removed and initially read out by the French Bureau Enquetes Accidents (BEA). The flight data recorder (FDR) data were transferred electronically to the Safety Board's lab by the BEA. The BEA's readout of the CVR indicated that the event had been written over. The BEA delegated the investigation of the incident to the Safety Board.

Examination and testing of the airplane disclosed no anomalies in the pitch control system. However, subsequent examinations and testing indicated that water may have entered the empennage area and froze on elements of the elevator control system. A similar event on another Boeing 767 operated by another carrier occurred on approach to Zurich, Switzerland on April 23, 2001. On examination, found water/ice in empennage on elevator control system (ref DCA01WA038).
Learning Keywords:Operations - Icing
Operations - Trim Misset
Operations - Upset - Uncommanded or excessive Pitch
Systems - Elevator, Stabilizer, Rudder, Ailerons
Systems - Flight Control System


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