Engine shutdown on large transport account vibration.

Attributes
ACN	121174
Time
Date	198908
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : grw airport : dfw
State Reference	MS
Altitude	msl bound lower : 26000 msl bound upper : 35000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zfw
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other descent other landing other
Route In Use	arrival other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 100 flight time total : 17000 flight time type : 1200
ASRS Report	121174
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : commercial pilot : instrument
Experience	flight time last 90 days : 160 flight time total : 5000 flight time type : 170
ASRS Report	120996
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

#3 engine vibration warning followed periods of sensed vibration. Engine shutdown completed, and drift down to FL280 begun. Subsequently descended to FL260. Requested quiet/discrete frequency. A couple were given, but several further frequency changes made. Landing was made at dfw west/O incident, runway 17L. A single quiet frequency could have prevented a lot of interruptions during checklist and engine review, as well as in event of further emergencys. After considering WX and flight conditions, emergency was not declared.

Original NASA ASRS Text

Title: ENGINE SHUTDOWN ON LGT ACCOUNT VIBRATION.

Narrative: #3 ENG VIBRATION WARNING FOLLOWED PERIODS OF SENSED VIBRATION. ENG SHUTDOWN COMPLETED, AND DRIFT DOWN TO FL280 BEGUN. SUBSEQUENTLY DSNDED TO FL260. REQUESTED QUIET/DISCRETE FREQ. A COUPLE WERE GIVEN, BUT SEVERAL FURTHER FREQ CHANGES MADE. LNDG WAS MADE AT DFW W/O INCIDENT, RWY 17L. A SINGLE QUIET FREQ COULD HAVE PREVENTED A LOT OF INTERRUPTIONS DURING CHKLIST AND ENG REVIEW, AS WELL AS IN EVENT OF FURTHER EMERS. AFTER CONSIDERING WX AND FLT CONDITIONS, EMER WAS NOT DECLARED.

Data retrieved from NASA's ASRS site as of August 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.