Air carrier medium large transport engine failure during climb through 10000' return land.

Attributes
ACN	161891
Time
Date	199010
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	msl bound lower : 11000 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zla tracon : lax
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 160 flight time total : 3700 flight time type : 200
ASRS Report	161891
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : overcame equipment problem flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

We were climbing through 10000' when there was a series of loud banging sounds and a slight, ctlable yawing. The aircraft (an medium large transport) was leveled off at 11000'. The captain brought the #1 engine to flight idle, which seemed to make the banging stop. Both the captain and I felt that sounds were compressor stalls. The captain declared an emergency, elected to keep the #1 engine running, and a return to lax was started. The captain assigned me to fly the aircraft while he handled all the PNF duties. To my knowledge all checklists were complied with and no far's were violated! All ATC instructions were complied with in light of the emergency. An uneventful landing on runway 24L was made. As we cleared the runway, the #1 engine was shutdown and a single taxi made to the gate. The cause of the engine failure was found to be a bearing failure. My thanks to the captain for a job well done from the left seat.

Original NASA ASRS Text

Title: ACR MLG ENGINE FAILURE DURING CLIMB THROUGH 10000' RETURN LAND.

Narrative: WE WERE CLBING THROUGH 10000' WHEN THERE WAS A SERIES OF LOUD BANGING SOUNDS AND A SLIGHT, CTLABLE YAWING. THE ACFT (AN MLG) WAS LEVELED OFF AT 11000'. THE CAPT BROUGHT THE #1 ENG TO FLT IDLE, WHICH SEEMED TO MAKE THE BANGING STOP. BOTH THE CAPT AND I FELT THAT SOUNDS WERE COMPRESSOR STALLS. THE CAPT DECLARED AN EMER, ELECTED TO KEEP THE #1 ENG RUNNING, AND A RETURN TO LAX WAS STARTED. THE CAPT ASSIGNED ME TO FLY THE ACFT WHILE HE HANDLED ALL THE PNF DUTIES. TO MY KNOWLEDGE ALL CHKLISTS WERE COMPLIED WITH AND NO FAR'S WERE VIOLATED! ALL ATC INSTRUCTIONS WERE COMPLIED WITH IN LIGHT OF THE EMER. AN UNEVENTFUL LNDG ON RWY 24L WAS MADE. AS WE CLRED THE RWY, THE #1 ENG WAS SHUTDOWN AND A SINGLE TAXI MADE TO THE GATE. THE CAUSE OF THE ENG FAILURE WAS FOUND TO BE A BEARING FAILURE. MY THANKS TO THE CAPT FOR A JOB WELL DONE FROM THE LEFT SEAT.

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.