A320 crew had #1 engine failure in ZID class a airspace.

Attributes
ACN	551343
Time
Date	200206
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ind.airport
State Reference	IN
Altitude	msl single value : 31000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid.artcc
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : level
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time type : 362
ASRS Report	551343
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time type : 296
ASRS Report	551344
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : epr indication other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : declared emergency flight crew : landed in emergency condition flight crew : diverted to another airport
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

At FL310, #1 engine started vibrating with loud bangs. #1 EPR started fluctuating with all other indications being normal. Turned the autoplt off. Pulled the throttle back to idle. Engine recovered. No ECAM at this time. Tried pushing the throttle up and conditions returned. Decided to operate the engine in degraded mode. After accomplishing driftdown checklist, captain notified ATC and dispatch. Declared emergency and notified ATC about diversion. After a call to dispatch and air carrier maintenance control, flight crew used best judgement and decided to divert to ind, which was the nearest suitable airport in point of time to make a safe landing. First officer handled the ATC while captain briefed the flight attendants and passenger. Captain issued a cabin advisory to purser and confirmed ground equipment would be there on arrival. When captain became the PF, briefed the approach and landing to runway 23L in ind. Landing was uneventful, exited the runway, shut down the #1 engine and taxied to the ramp.

Original NASA ASRS Text

Title: A320 CREW HAD #1 ENG FAILURE IN ZID CLASS A AIRSPACE.

Narrative: AT FL310, #1 ENG STARTED VIBRATING WITH LOUD BANGS. #1 EPR STARTED FLUCTUATING WITH ALL OTHER INDICATIONS BEING NORMAL. TURNED THE AUTOPLT OFF. PULLED THE THROTTLE BACK TO IDLE. ENG RECOVERED. NO ECAM AT THIS TIME. TRIED PUSHING THE THROTTLE UP AND CONDITIONS RETURNED. DECIDED TO OPERATE THE ENG IN DEGRADED MODE. AFTER ACCOMPLISHING DRIFTDOWN CHKLIST, CAPT NOTIFIED ATC AND DISPATCH. DECLARED EMER AND NOTIFIED ATC ABOUT DIVERSION. AFTER A CALL TO DISPATCH AND ACR MAINT CTL, FLC USED BEST JUDGEMENT AND DECIDED TO DIVERT TO IND, WHICH WAS THE NEAREST SUITABLE ARPT IN POINT OF TIME TO MAKE A SAFE LNDG. FO HANDLED THE ATC WHILE CAPT BRIEFED THE FLT ATTENDANTS AND PAX. CAPT ISSUED A CABIN ADVISORY TO PURSER AND CONFIRMED GND EQUIP WOULD BE THERE ON ARR. WHEN CAPT BECAME THE PF, BRIEFED THE APCH AND LNDG TO RWY 23L IN IND. LNDG WAS UNEVENTFUL, EXITED THE RWY, SHUT DOWN THE #1 ENG AND TAXIED TO THE RAMP.

Data retrieved from NASA's ASRS site as of July 2007 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.