An air carrier flight crew diverted to cyqx when the right engine failed in the mid atlantic.

Narrative:

We were flying on track bravo at 0.81M; FL340 and were just east of 50W when we experienced what we interpreted as a compressor stall on the right engine. It was self clearing and no parameters were exceeded. The captain was on break and was called back to the flight deck. We then called maintenance control through dispatch who advised the right engine was replaced five days before but no issues had been noted since then. We were told to write it up and there was nothing else to be done at this point. After monitoring the engine for about 15 minutes; it looked like it had been an isolated incident and the captain went back on his break. About ten minutes later there was a light bang and we lost the right engine. At this point I was on the controls and the relief pilot was setting me up for a 15 NM left offset. Once we got headed over we decided to start a driftdown down to FL200 per the engine out cruise page. At this point the captain came back to the cockpit and took his seat. I kept flying while the captain and the relief pilot analyzed and secured the right engine and then worked the associated checklists. The relief pilot also helped with the radios and declared an emergency. We were considering diverting to cyqx or cyyr but decided to go to gander because it was closer and the weather was good. At this point we got clearance to gander and descended below the tracks so we could go direct. The aircraft was flying fine in the driftdown and was holding altitude at around FL250 at a speed of 260KIAS. The weather was VFR at gander and we elected to land on the longest runway there; runway 21. The captain elected to land the aircraft and flew a single engine visual approach with autobrakes selected at level three. He made a very nice approach and landing. The fire trucks said there were no problems noted as we taxied to the ramp.

Original NASA ASRS Text

Title: An air carrier flight crew diverted to CYQX when the right engine failed in the mid Atlantic.

Narrative: We were flying on Track Bravo at 0.81M; FL340 and were just East of 50W when we experienced what we interpreted as a compressor stall on the right engine. It was self clearing and no parameters were exceeded. The Captain was on break and was called back to the flight deck. We then called Maintenance Control through Dispatch who advised the right engine was replaced five days before but no issues had been noted since then. We were told to write it up and there was nothing else to be done at this point. After monitoring the engine for about 15 minutes; it looked like it had been an isolated incident and the Captain went back on his break. About ten minutes later there was a light bang and we lost the right engine. At this point I was on the controls and the Relief Pilot was setting me up for a 15 NM left offset. Once we got headed over we decided to start a driftdown down to FL200 per the Engine Out cruise page. At this point the Captain came back to the cockpit and took his seat. I kept flying while the Captain and the Relief Pilot analyzed and secured the right engine and then worked the associated checklists. The Relief Pilot also helped with the radios and declared an emergency. We were considering diverting to CYQX or CYYR but decided to go to Gander because it was closer and the weather was good. At this point we got clearance to Gander and descended below the tracks so we could go direct. The aircraft was flying fine in the driftdown and was holding altitude at around FL250 at a speed of 260KIAS. The weather was VFR at Gander and we elected to land on the longest runway there; Runway 21. The Captain elected to land the aircraft and flew a single engine visual approach with autobrakes selected at level three. He made a very nice approach and landing. The fire trucks said there were no problems noted as we taxied to the ramp.

Data retrieved from NASA's ASRS site as of July 2013 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.

Attributes
ACN	1048851
Time
Date	201211
Local Time Of Day	0601-1200
Place
Locale Reference	CZQX.ARTCC
State Reference	NF
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Commercial fixed wing
Operating Under FAR Part	Part 121
Route In Use	Direct Visual Approach
Flight Plan	IFR
Component
Aircraft Component	Turbine Engine
Person 1
Function	Pilot Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 210 Flight Crew Total 15600 Flight Crew Type 7600
Person 2
Function	Pilot Not Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 165 Flight Crew Total 23000 Flight Crew Type 5600
Events
Anomaly	Aircraft Equipment Problem Critical