|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Locale Reference||airport : zzz.airport|
|Altitude||msl single value : 36000|
|Controlling Facilities||artcc : zzz.artcc|
|Operator||common carrier : air carrier|
|Make Model Name||A320|
|Operating Under FAR Part||Part 121|
|Affiliation||company : air carrier|
|Function||flight crew : captain|
oversight : pic
|Experience||flight time last 90 days : 240|
flight time total : 23000
flight time type : 6500
|Affiliation||company : air carrier|
|Function||flight crew : first officer|
|Experience||flight time last 90 days : 230|
flight time total : 5500
flight time type : 3000
|Anomaly||aircraft equipment problem : critical|
|Independent Detector||aircraft equipment other aircraft equipment : ecam|
other flight crewa
other flight crewb
|Resolutory Action||controller : issued new clearance|
flight crew : diverted to another airport
flight crew : landed in emergency condition
flight crew : declared emergency
We were established in cruise approximately 80 mi west of ZZZ when we experienced a muffled bang with associated yaw. We realized we had a compressor stall on #2 engine with an engine stall ECAM. EPR decreased and returned to normal. Approximately 10 seconds later received engine #2 oil filter clog on ECAM. Flight attendants called from cabin with concerns of loud noise and associated smell and haze in cabin. We then reduced #2 engine to idle; shut off engine #2 bleed; xbleed valve open; recirculation fans off with associated pack high flow. Requested first officer to do ECAM while I flew plane and took care of radio work. He did engine stall and engine oil filter clog ECAM with reference to flight manual. Declared emergency and asked for clearance to ZZZ. This was most suitable airport in point of time. Maintained #2 engine at idle thrust as all parameters were normal; engine #2 oil filter clog stayed on continuously. Advised dispatch of emergency and checked with flight attendant that cabin air quality was now normal and it was. Planned cabin advisory and indicated we had 20 mins to touchdown. Then made announcement to passenger of our problem and plan. Proceeded to ZZZ and made normal approach and landing. Shut down #2 engine after departing arrival runway. Emergency equipment inspected engine and indicated smoke from engine as we turned off runway. Dissipated quickly after engine shut down. Taxied to gate to deplaned passenger. All indications normal as we taxied back to gate. Callback conversation with reporter revealed the following information: post flight inspection by maintenance revealed that the oil filter was clogged with metal fragments although the engine continued to run after landing and rotate freely after shut down. Exactly how the compressor stall and the metal fragments are related is unknown. The V2500 engine was replaced before the aircraft was released for flight.
Original NASA ASRS Text
Title: A320 FLT CREW REPORTS COMPRESSOR STALL AT FL360 FOLLOWED SHORTLY BY ENG OIL FILTER CLOG ECAM. EMERGENCY IS DECLARED AND FLIGHT DIVERTS TO NEAREST SUITABLE ARPT WITH ENGINE AT IDLE.
Narrative: WE WERE ESTABLISHED IN CRUISE APPROX 80 MI W OF ZZZ WHEN WE EXPERIENCED A MUFFLED BANG WITH ASSOCIATED YAW. WE REALIZED WE HAD A COMPRESSOR STALL ON #2 ENG WITH AN ENG STALL ECAM. EPR DECREASED AND RETURNED TO NORMAL. APPROX 10 SECONDS LATER RECEIVED ENG #2 OIL FILTER CLOG ON ECAM. FLT ATTENDANTS CALLED FROM CABIN WITH CONCERNS OF LOUD NOISE AND ASSOCIATED SMELL AND HAZE IN CABIN. WE THEN REDUCED #2 ENG TO IDLE; SHUT OFF ENG #2 BLEED; XBLEED VALVE OPEN; RECIRCULATION FANS OFF WITH ASSOCIATED PACK HIGH FLOW. REQUESTED FO TO DO ECAM WHILE I FLEW PLANE AND TOOK CARE OF RADIO WORK. HE DID ENG STALL AND ENG OIL FILTER CLOG ECAM WITH REF TO FLT MANUAL. DECLARED EMER AND ASKED FOR CLRNC TO ZZZ. THIS WAS MOST SUITABLE ARPT IN POINT OF TIME. MAINTAINED #2 ENG AT IDLE THRUST AS ALL PARAMETERS WERE NORMAL; ENG #2 OIL FILTER CLOG STAYED ON CONTINUOUSLY. ADVISED DISPATCH OF EMER AND CHKED WITH FLT ATTENDANT THAT CABIN AIR QUALITY WAS NOW NORMAL AND IT WAS. PLANNED CABIN ADVISORY AND INDICATED WE HAD 20 MINS TO TOUCHDOWN. THEN MADE ANNOUNCEMENT TO PAX OF OUR PROB AND PLAN. PROCEEDED TO ZZZ AND MADE NORMAL APCH AND LNDG. SHUT DOWN #2 ENG AFTER DEPARTING ARR RWY. EMER EQUIP INSPECTED ENG AND INDICATED SMOKE FROM ENG AS WE TURNED OFF RWY. DISSIPATED QUICKLY AFTER ENG SHUT DOWN. TAXIED TO GATE TO DEPLANED PAX. ALL INDICATIONS NORMAL AS WE TAXIED BACK TO GATE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: POST FLIGHT INSPECTION BY MAINTENANCE REVEALED THAT THE OIL FILTER WAS CLOGGED WITH METAL FRAGMENTS ALTHOUGH THE ENGINE CONTINUED TO RUN AFTER LANDING AND ROTATE FREELY AFTER SHUT DOWN. EXACTLY HOW THE COMPRESSOR STALL AND THE METAL FRAGMENTS ARE RELATED IS UNKNOWN. THE V2500 ENGINE WAS REPLACED BEFORE THE ACFT WAS RELEASED FOR FLIGHT.
Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.