All four engines failed, leaving only critical systems on backup electrical power. One report assigned the engine shutdown to the conversion of the ash into a glass coating inside the engines that fooled the engine temperature sensors and led to an auto-shutdown of all four engines.[3]
When all four main generators shut off due to the failure of all the engines, a momentary power interruption occurred when the flight instruments transferred to standby power. Standby power on the 747-400 is provided by two batteries and inverters. The captain performed the engine restart procedure, which failed on the first few attempts, and repeated it until restart was achieved. On some of the attempts, as one or more (but not all) engines started to operate, the main generator switched back on. This switching on and off caused repeated power transfer interruptions to the flight instruments. The temporary blanking of the instruments gave the appearance that standby power had failed. These power transfers were later verified from the flight data recorder.[citation needed]
Transcript
The following edited transmissions took place between Anchorage Center, the air traffic control facility for that region, and KLM 867:[4]
Pilot: KLM 867 heavy is reaching level 250 heading 140
Anchorage Center: Okay, Do you have good sight on the ash plume at this time?
Pilot: Yea, it's just cloudy it could be ashes. It's just a little browner than the normal cloud.
Pilot: We have to go left now: it's smoky in the cockpit at the moment, sir.
Anchorage Center: KLM 867 heavy, roger, left at your discretion.
Pilot: Climbing to level 390, we're in a black cloud, heading 130.
Pilot: KLM 867 we have flame out all engines and we are descending now!
Anchorage Center: KLM 867 heavy, Anchorage?
Pilot: KLM 867 heavy, we are descending now: we are in a fall!
Pilot: KLM 867, we need all the assistance you have, sir. Give us radar vectors please!
Recovery and aftermath
The cockpit crew inspects the damage caused to PH-BFC by the ash cloud in Anchorage the day after the incident.
After descending more than 14,000 ft (4250 m), the crew restarted the engines and safely landed the plane. In this case, the ash caused more than US$80 million in damage to the aircraft, requiring all four engines to be replaced, but there were no human deaths and no one was injured.[2][5] A shipment of 25 African birds, two genets, and 25 tortoises aboard the plane was diverted to an Anchorage warehouse, where eight birds and three tortoises died before the mislabeled shipment was discovered.[6]
KLM continues to operate the Amsterdam-Tokyo route, but as Flight 861, and it is now a nonstop eastbound flight using a Boeing 787. Flight 867 is now used for flights between Amsterdam and Osaka.
The aircraft, PH-BFC, remained in service with KLM until its retirement from the fleet on 14 March 2018.[7] It joined the KLM Asia fleet upon the subsidiary's establishment in 1995, until it was returned to KLM in 2012 and repainted in the standard KLM livery after a maintenance check.[8]
^"Airfleets summary for Boeing 747 MSN 23982". Airfleets.net. 30 June 1989. Retrieved 22 April 2016.
^ abWitkin, Richard (16 December 1989). "Jet Lands Safely After Engines Stop in Flight Through Volcanic Ash". New York Times. Retrieved 2 February 2009.
^. Heraldnet.com. 18 April 2010. Archived from the original on 3 March 2016. Retrieved 22 April 2016.
^Neal, Christina; Casadevall, Thomas J.; Miller, Thomas P.; Hendley II, James W.; Stauffer, Peter H. (1997). "Volcanic Ash–Danger to Aircraft in the North Pacific" (PDF). U.S. Geological Survey Fact Sheet 030-97. United States Geological Survey. Retrieved 2 February 2009.{{cite web}}: CS1 maint: url-status (link)
^Mauer, Richard (14 January 1990). "Government looks into animals mishap". Anchorage Daily News.
^"Deze mega Boeing zien we nooit meer terug". Telegraaf. 14 March 2018. Retrieved 14 March 2018.
^"PH-BFC pictures on". Airliners.net. 23 April 2016. Retrieved 13 May 2016.
External links
Airliners.Net – Picture of the plane that carried KLM Flight 867
flight, december, 1989, route, from, amsterdam, narita, international, airport, tokyo, forced, make, emergency, landing, anchorage, international, airport, alaska, when, four, engines, failed, boeing, less, than, months, time, flew, through, thick, cloud, volc. On 15 December 1989 KLM Flight 867 en route from Amsterdam to Narita International Airport Tokyo was forced to make an emergency landing at Anchorage International Airport Alaska when all four engines failed The Boeing 747 400 less than six months old at the time 1 flew through a thick cloud of volcanic ash from Mount Redoubt 2 which had erupted the day before KLM Flight 867PH BFC the aircraft involved in the incident seen in 2014IncidentDate15 December 1989 1989 12 15 SummaryQuadruple engine failure due to blockage by volcanic ashSiteRedoubt Volcano Anchorage AlaskaAircraftAircraft typeBoeing 747 406MAircraft nameCity of CalgaryOperatorKLMRegistrationPH BFCFlight originAmsterdam Airport Schiphol Amsterdam NetherlandsStopoverAnchorage International Airport Anchorage Alaska United StatesDestinationNarita International Airport Tokyo JapanOccupants245Passengers231Crew14Fatalities0Injuries0Survivors245 Contents 1 Engine failure 1 1 Transcript 2 Recovery and aftermath 3 See also 4 References 5 External linksEngine failure EditAll four engines failed leaving only critical systems on backup electrical power One report assigned the engine shutdown to the conversion of the ash into a glass coating inside the engines that fooled the engine temperature sensors and led to an auto shutdown of all four engines 3 When all four main generators shut off due to the failure of all the engines a momentary power interruption occurred when the flight instruments transferred to standby power Standby power on the 747 400 is provided by two batteries and inverters The captain performed the engine restart procedure which failed on the first few attempts and repeated it until restart was achieved On some of the attempts as one or more but not all engines started to operate the main generator switched back on This switching on and off caused repeated power transfer interruptions to the flight instruments The temporary blanking of the instruments gave the appearance that standby power had failed These power transfers were later verified from the flight data recorder citation needed Transcript Edit The following edited transmissions took place between Anchorage Center the air traffic control facility for that region and KLM 867 4 Pilot KLM 867 heavy is reaching level 250 heading 140 Anchorage Center Okay Do you have good sight on the ash plume at this time Pilot Yea it s just cloudy it could be ashes It s just a little browner than the normal cloud Pilot We have to go left now it s smoky in the cockpit at the moment sir Anchorage Center KLM 867 heavy roger left at your discretion Pilot Climbing to level 390 we re in a black cloud heading 130 Pilot KLM 867 we have flame out all engines and we are descending now Anchorage Center KLM 867 heavy Anchorage Pilot KLM 867 heavy we are descending now we are in a fall Pilot KLM 867 we need all the assistance you have sir Give us radar vectors please Recovery and aftermath Edit The cockpit crew inspects the damage caused to PH BFC by the ash cloud in Anchorage the day after the incident After descending more than 14 000 ft 4250 m the crew restarted the engines and safely landed the plane In this case the ash caused more than US 80 million in damage to the aircraft requiring all four engines to be replaced but there were no human deaths and no one was injured 2 5 A shipment of 25 African birds two genets and 25 tortoises aboard the plane was diverted to an Anchorage warehouse where eight birds and three tortoises died before the mislabeled shipment was discovered 6 KLM continues to operate the Amsterdam Tokyo route but as Flight 861 and it is now a nonstop eastbound flight using a Boeing 787 Flight 867 is now used for flights between Amsterdam and Osaka The aircraft PH BFC remained in service with KLM until its retirement from the fleet on 14 March 2018 7 It joined the KLM Asia fleet upon the subsidiary s establishment in 1995 until it was returned to KLM in 2012 and repainted in the standard KLM livery after a maintenance check 8 See also Edit Alaska portal Netherlands portal Aviation portal 1980s portalBritish Airways Flight 009 List of airline flights that required gliding Ring of Fire Volcanic ash and aviation safetyReferences Edit Airfleets summary for Boeing 747 MSN 23982 Airfleets net 30 June 1989 Retrieved 22 April 2016 a b Witkin Richard 16 December 1989 Jet Lands Safely After Engines Stop in Flight Through Volcanic Ash New York Times Retrieved 2 February 2009 A look back at Alaska volcano s near downing of a 747 Heraldnet com 18 April 2010 Archived from the original on 3 March 2016 Retrieved 22 April 2016 VOLCANIC HAZARDS IMPACTS ON AVIATION U S Senate Commerce Committee hearing in 2006 Neal Christina Casadevall Thomas J Miller Thomas P Hendley II James W Stauffer Peter H 1997 Volcanic Ash Danger to Aircraft in the North Pacific PDF U S Geological Survey Fact Sheet 030 97 United States Geological Survey Retrieved 2 February 2009 a href Template Cite web html title Template Cite web cite web a CS1 maint url status link Mauer Richard 14 January 1990 Government looks into animals mishap Anchorage Daily News Deze mega Boeing zien we nooit meer terug Telegraaf 14 March 2018 Retrieved 14 March 2018 PH BFC pictures on Airliners net 23 April 2016 Retrieved 13 May 2016 External links EditAirliners Net Picture of the plane that carried KLM Flight 867 Accident description at the Aviation Safety Network NTSB Identification ANC90FA020 National Transportation Safety Board Record of the incident Photo PH BFC KLM Royal Dutch Airlines Boeing 747 406 M 14 October 1989 U S Department of the Interior U S Geological Survey Flightglobal 9 January 1990 Volcano Flames Out KLM 747 Volcanic Hazards Impacts on Aviation U S Senate Commerce Committee Cockpit audio recording via phys org Coordinates 61 10 18 N 149 59 12 W 61 1717 N 149 9867 W 61 1717 149 9867 Retrieved from https en wikipedia org w index php title KLM Flight 867 amp oldid 1123859749, wikipedia, wiki, book, books, library,
