Alerted by severe vibration; loud popping and a flight attendant's report of fire from the right eng...

Narrative:

The first officer was flying. At 11;000 ft with ap/at/LNAV engaged; we began to experience a severe vibration and popping noise. Neither of us had experienced this before. No cockpit indications of a problem. The first officer turned off the ap/at and reduced power and the vibration and popping began to stop. The lead flight attendant called and said that there were flames coming out of the right side of the aircraft. At the same time the airspeed began to decrease so the first officer added power and it started all over again shaking and popping. A company mechanic was on board and called and said that flames were coming out of the #2 engine and it was a possible compressor stall. The first officer increased the #1 thrust lever and it operated normally. I used the engine shut down memory items and we declared an emergency. I made a PA to the passengers and flight attendants. We ran the engine shutdown checklist followed by the single engine landing checklist. At 2;000 ft I took the controls and the first officer completed the landing computations. We landed safely; then pulled off the runway and talked to crash fire rescue equipment and the passengers. We taxied to the jetway. No injuries were involved. A logbook entry was made.

Original NASA ASRS Text

Title: Alerted by severe vibration; loud popping and a Flight Attendant's report of fire from the right engine; the flight crew of a B737-700 descending for landing shut down the engine; declared an emergency and landed at their destination airport.

Narrative: The First Officer was flying. At 11;000 FT with AP/AT/LNAV engaged; we began to experience a severe vibration and popping noise. Neither of us had experienced this before. No cockpit indications of a problem. The First Officer turned off the AP/AT and reduced power and the vibration and popping began to stop. The Lead Flight Attendant called and said that there were flames coming out of the right side of the aircraft. At the same time the airspeed began to decrease so the First Officer added power and it started all over again shaking and popping. A Company Mechanic was on board and called and said that flames were coming out of the #2 engine and it was a possible compressor stall. The First Officer increased the #1 thrust lever and it operated normally. I used the engine shut down memory items and we declared an emergency. I made a PA to the passengers and flight attendants. We ran the Engine Shutdown checklist followed by the Single Engine Landing checklist. At 2;000 FT I took the controls and the First Officer completed the landing computations. We landed safely; then pulled off the runway and talked to CFR and the passengers. We taxied to the jetway. No injuries were involved. A logbook entry was made.

Data retrieved from NASA's ASRS site as of April 2012 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	868347
Time
Date	201001
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	Turbine Engine
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 274 Flight Crew Type 9000
Person 2
Function	Pilot Flying First Officer
Experience	Flight Crew Last 90 Days 304 Flight Crew Type 5500
Events
Anomaly	Aircraft Equipment Problem Critical

Alerted by severe vibration; loud popping and a flight attendant's report of fire from the right engine; the flight crew of a B737-700 descending for landing shut down the engine; declared an emergency and landed at their destination airport.