Return land in large transport after an in-flight engine shutdown performed.

Attributes
ACN	229636
Time
Date	199212
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ord
State Reference	IL
Altitude	msl bound lower : 15000 msl bound upper : 15000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zau artcc : zdv
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : intermediate altitude landing other other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : flight engineer pilot : instrument pilot : atp
Experience	flight time last 90 days : 210 flight time total : 8700 flight time type : 2000
ASRS Report	229636
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	other Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Climbing out of 15000 ft we suddenly heard a loud noise, followed by airframe vibration. Found that #1 engine was the source of the vibration and had lost partial power. We shut down #1 engine and returned to ord for a normal landing. We did not declare an emergency as the aircraft was performing flawlessly, ord WX was excellent, and no other problems occurred.

Original NASA ASRS Text

Title: RETURN LAND IN LGT AFTER AN INFLT ENG SHUTDOWN PERFORMED.

Narrative: CLBING OUT OF 15000 FT WE SUDDENLY HEARD A LOUD NOISE, FOLLOWED BY AIRFRAME VIBRATION. FOUND THAT #1 ENG WAS THE SOURCE OF THE VIBRATION AND HAD LOST PARTIAL PWR. WE SHUT DOWN #1 ENG AND RETURNED TO ORD FOR A NORMAL LNDG. WE DID NOT DECLARE AN EMER AS THE ACFT WAS PERFORMING FLAWLESSLY, ORD WX WAS EXCELLENT, AND NO OTHER PROBS OCCURRED.

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.