|Title:||Fire and smoke, Incident involving aircraft SE-DUP in the airspace above Jönköping, F county, Sweden, on 2 February 2001|
|Micro summary:||Fire and smoke prompts a successful diversion of this Boeing 757.|
|Event Time:||2001-02-02 at 0830 UTC|
|Publishing Agency:||Swedish Accident Investigation Board (AIB)|
|Report number:||RL 2001:42e|
|Diversion Airport:||Göteborg/Landvetter Airport, O county, Sweden|
|Site of event:||Airspace above Jönköping, Sweden|
|Departure:||Stockholm-Arlanda Airport, Marsta, Sweden|
|Airplane Type(s):||Boeing 757-200|
|Type of flight:||Charter|
|Diverted to:||Göteborg/Landvetter Airport, O county, Sweden|
|Executive Summary:||The aircraft departed from Stockholm/Arlanda airport on 2 February 2001 at 08:58 hours on a charter flight to Malaga in Spain. A little more than 30 minutes after takeoff, when the aircraft was cruising at flight level (FL) 310 (approximately 9,450 meters above sea level) two cabin attendants who were in the aft galley, heard a loud bang and observed a flash of light that came from the oven and water boiler control panel on the rear cabin wall. Shortly thereafter smoke began to escape from the area surrounding the control panel. One of the cabin attendants fetched a fire extinguisher, donned protective gloves and proceeded to spray the panel.|
The smoke dissipated quickly, but as the crew was unsure about just what had taken place and what possible damage had been caused to the aircraft, the commander chose to discontinue the flight and declared an emergency with the air traffic controller at Malmö Control. He requested clearance to descend as soon as possible and fly a straight-in approach to Göteborg/Landvetter airport for landing, which was granted.
The aircraft landed uneventfully on runway 03 at 09:47 hours and taxied in to parking position 24.
During the technical investigation extensive soot was found in the compartment behind the control panel for the ovens and water boilers in the aft galley. There was also soot on the exterior surface of the panel. Furthermore, the electrical cannon plug that connects the control panel to the ovens and to the water boilers, was severely burnt and sooty. The insulation material on the cannon plug had been burned and deformed. The damage confirmed that a local fire had taken place within the compartment.
SHK has established that there was no manufacturing defect within the cannon plug itself, but that the electrical system serving the ovens and water boilers in the aft galley was underdimensioned. On account of this and similar incidents, the manufacturer has introduced an obligatory modification of the system.
The incident was caused by an electrical flash-over within the electrical system supplying the ovens and the water boilers in the aft galley.
|Learning Keywords:||Operations - Bang, pop, crack, sizzle!|
|Operations - Cabin or Cockpit Fire|
|Operations - Cabin or Cockpit Smoke|
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