Event Details

Title:Jammed aileron, Incident involving aircraft SE-DRG, 13 January 1997, in controlled airspace west of Stockholm, AB county, Sweden
Micro summary:A loose plate caused a jammed aileron and difficulties in controlling this BAe 146-200 .
Event Time:1997-01-13 at 1600
File Name:1997-01-13-SE.pdf
Publishing Agency:Swedish Accident Investigation Board (AIB)
Publishing Country:Sweden
Report number:C 1997:49
Diversion Airport:Norrköping/Kungsängen, Sweden
Site of event:In controlled airspace west of Stockholm, AB county, after takeoff at an altitude of around 1300 ft above ground
Departure:Stockholm/Bromma Airport, Stockholm, Sweden
Destination:Kungsängen Airport, Norrköping, Sweden
Airplane Type(s):BAe 146-200
Flight Phase:Climb
Operator(s):Malmö Aviation Schedule AB
Type of flight:Revenue
Serious Injuries:0
Other Injuries:0
Diverted to:Norrköping/Kungsängen, Sweden
Executive Summary:The aircraft took off from Stockholm/Bromma airport 13 January 1997 at 1706 hrs. When the copilot, at an altitude of approximately 1 300 ft above ground and in a left turn, intended to straighten out, he could not move the wheel more than 10 to 20 degrees right from its neutral position. The jamming was confirmed by the captain who by turning the left wheel with considerable force disconnected the left aileron control system from the right system. The captain was then able to manoeuvre the aircraft from his left seat using large wheel inputs. The crew declared an emergency and decided finally to divert to Norrköping/Kungsängen. The landing there was uneventful and the passengers disembarked at the terminal building.

The probable cause of the incident was a loose cover plate on the right aileron which, under the influence of aerodynamic forces during flight could catch against the trailing edge of the wing skin thereby jamming the upward movement of the aileron.

In its Preliminary Report dated 31 January 1997 the Board has recommended the Swedish Civil Aviation Authority to encourage their British counterpart, initially, to direct all operators of the aircraft type to perform a special check of the chain tension in the control column and of the installation of the cover plate.
Learning Keywords:Systems - Flight Control System
Close match:Boeing 747-419 ZK-NBS flight NZ 2, in flight flap separation over Manukau Harbour by Auckland International Airport, 30 August 2002
Failure of flap deflection control track, Boeing 767-319 ZK-NCH, approach to Auckland International Aerodrome, 19 May 2001
Uncommanded roll, Serious incident on March 20, 2001 at Frankfurt/Main, to Airbus Industrie A320-200
Excessive right aileron required on Boeing 737-400, EI-BXB, at Dublin Airport
Roll impairment due to jammed aileron cables, BAe 146-300, G-OINV
Uncommanded roll, Boeing 737-236 Advanced, G-BGJI
Flight control system failure, Report on the incident to Airbus A320-212, G-KMAM, London Gatwick Airport, on 26 August 1993
Elevator jam on takeoff, HS748 Series 2A, G-ATMI, Liverpool
Lightning strike, Fokker F28 Mark 0100, G-UKFK
Pitch control problems, Boeing 747-436, G-BNLB
Uncommanded yaw on climb, Airbus A300B4- 605R, N14065
Loss of Pitch Control on Takeoff, Emery Worldwide Airlines, Flight 17, McDonnell Douglas DC-8-71F, N8079U, Rancho Cordova, California, February 16, 2000
Electrical arcing severs aileron cable on Boeing 767-332ER, June 25, 1996
Uncontrolled Descent and Collision With Terrain, United Airlines Flight 585, Boeing 737-200, N999UA, 4 Miles South of Colorado Springs Municipal Airport, Colorado, Springs, Colorado, March 3, 1991
In-flight upset, United Airlines Flight 585, Boeing 737-291, N999UA, Uncontrolled Collision with Terrain for Undetermined Reasons, 4 Miles South Of Colorado Springs Municipal Airport, Colorado Springs, Colorado, March 3, 1991
Uncontained engine failure, United Airlines Flight 232, McDonnell Douglas DC-10-10, Sioux Gateway Airport, Sioux City, Iowa, July 19, 1989
Explosive decompression, American Airlines, Inc., McDonnell Douglas DC-10-10, N103AA, Near Windsor, Ontario, Canada, June 12, 1972
Loss of directional control, Western Air Lines, Inc., Boeing 720-047B, N3166, Ontario International Airport, Ontario, California, March 31, 1971
Uncontained engine failure, American Airlines, Inc., Boeing 747-121, N743PA, San Francisco, California, September 18, 1970
Pitch oscillation, Trans World Airlines, Inc., Boeing 707-331B, N8705T, Los Angeles, California, August 28, 1973
Loss of engine and stall on takeoff, American Airlines, Inc., DC-10-10, N110AA, Chicago-O'hare International Airport, Chicago, Illinois, May 25, 1979
Uncontained engine failure, Air Florida Airlines Inc., McDonnell-Douglas DC-10-30CF, N101TV, Miami International Airport, Miami, Florida, September 22, 1981
Uncontained engine failure, Eastern Airlines Flight 935 Lockheed L-1011-385, N309EA Near Colts Neck, New Jersey September 22, 1981
Tailcone loss in climb, Air Canada, McDonnell Douglas DC-9-32 (CF-TLU), East Of Boston, Massachusetts, September 17, 1979
Aileron control cable failure on a Boeing 737-3TO on takeoff at Seattle, September 27, 1997
Elevator failure, Douglas DC-8-71, March 11, 1997
Uncommanded roll to the left, Boeing 737-3B7, August 5, 1995
Uncommanded roll, Douglas DC-8-71F, December 14, 2001
Uncommanded roll, McDonnell Douglas DC-9-15, July 12, 1997
Uncommanded roll during cruise, Airbus A320-211, April 28, 1995
Uncommanded roll and yaw, Douglas DC-9-34, April 30, 1998
Uncommanded pitch increase, Airbus A320, June 14, 1996
Severe pitch oscillations, McDonnell Douglas MD-11, November 25, 2000
Rudder control malfunction, Boeing 757-200ER, September 13, 1993
Failure of stabilizer control system, Boeing 767-200, November 20, 1999
Control difficulties, McDonnell Douglas MD-11, October 21, 1998
Elevator control problems, Boeing - Canada (de Havilland) DHC-8-102, March 12, 2000
Rudder hardover, Boeing 747-400, October 9, 2002
Pitch control problems, Boeing 767-300, March 27, 2001
Reduced roll capability, Boeing 747-422, April 1, 2003
Loss of rudder control, Boeing 737-201, June 9, 1996
Loss of elevator control, Douglas DC-9-14, March 21, 1999
Intermittent loss of electrical power to stabilizer actuator, Airbus A320, March 18, 1996
Jammed stabilizer trim, Boeing 737-700, October 10, 2001
Flight control vibration, Boeing 737-448, May 8, 2002
Flight control system oddities, McDonnell Douglas MD-82, April 11, 1998
Frozen elevator control, Douglas DC-9-32, April 9, 1999
Frozen aileron cable, Boeing 767-222, June 7, 2000
Frozen elevators, McDonnell Douglas MD-82, February 5, 1999
Idiopathic control wheel lockup, Boeing 737-3M8, November 29, 2003
Roll control difficulties, McDonnell Douglas MD-11F, N583FE, January 15, 2003
Pitch control problems, BAe 146-200, G-JEAX, December 12, 2002
Acceleration to speed well above VMO, Airbus A320-232, G-TTOA
Flight control system problems following icing, Avro 146-RJ100 and others, G-JEAV, January 17, 2006
In-flight upset, Boeing 747-236, G-BDXL, February 27, 2000
Flight control difficulties, McDonnell Douglas MD-11-C, I-DUPA, January 14, 2003
Roll Oscillations on Landing, two Air Canada Airbus 321-s211, C-GJVX and C-GIUF, Toronto/Lester B. Pearson International Airport, Ontario, 07 December 2002


Accident Reports on DVD, Copyright © 2006 by Flight Simulation Systems, LLC.  All Rights Reserved.
 All referenced trademarks are the property of their respective owners.