EA319 crew had engine vibration.

Attributes
ACN	447311
Time
Date	199908
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : ord.ils
State Reference	IL
Altitude	agl bound lower : 39 agl bound upper : 39000 agl single value : 50
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid.artcc
Operator	common carrier : air carrier
Make Model Name	A319
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 180 flight time total : 10100 flight time type : 360
ASRS Report	447311
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : diverted to another airport flight crew : landed as precaution flight crew : overcame equipment problem
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Vibration began in #1 engine. Did some minor diagnostics. Only way to stop it was to reduce thrust slightly (1-2%). Diverted to pit without incident. Vibration stopped after leaving cruise altitude. The entire operation went without any problems, in my opinion because of repeated crew resource management training. All crew members conducted themselves within the guidelines of this training which made for a non eventful diversion, approach, and landing.

Original NASA ASRS Text

Title: EA319 CREW HAD ENG VIBRATION.

Narrative: VIBRATION BEGAN IN #1 ENG. DID SOME MINOR DIAGNOSTICS. ONLY WAY TO STOP IT WAS TO REDUCE THRUST SLIGHTLY (1-2%). DIVERTED TO PIT WITHOUT INCIDENT. VIBRATION STOPPED AFTER LEAVING CRUISE ALT. THE ENTIRE OP WENT WITHOUT ANY PROBS, IN MY OPINION BECAUSE OF REPEATED CREW RESOURCE MGMNT TRAINING. ALL CREW MEMBERS CONDUCTED THEMSELVES WITHIN THE GUIDELINES OF THIS TRAINING WHICH MADE FOR A NON EVENTFUL DIVERSION, APCH, AND LNDG.

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.