Aircraft equipment problem malfunction creates need for diversion to altitude airport.

Attributes
ACN	296340
Time
Date	199502
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : jax
State Reference	FL
Altitude	msl bound lower : 31000 msl bound upper : 31000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zjx tower : lit
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise other other other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi pilot : commercial pilot : instrument
Experience	flight time total : 5500
ASRS Report	296340
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Situations
Airport	procedure or policy : unspecified

Narrative:

During level cruise flight at FL310 felt in a vibration and observed left EPR gauge fluctuating, N1, N2 winding down. Perform engine failure emergency checklist. Secured left engine. Captain, PNF requested a lower altitude and declared an emergency, then requested vectors to jax. Landing was uneventful. Cockpit resource management and simulator emergency training is very effective only unusual event -- local jacksonville police treated event as an accident. Requesting pilots license and medicals.

Original NASA ASRS Text

Title: ACFT EQUIP PROB MALFUNCTION CREATES NEED FOR DIVERSION TO ALT ARPT.

Narrative: DURING LEVEL CRUISE FLT AT FL310 FELT IN A VIBRATION AND OBSERVED L EPR GAUGE FLUCTUATING, N1, N2 WINDING DOWN. PERFORM ENG FAILURE EMER CHKLIST. SECURED L ENG. CAPT, PNF REQUESTED A LOWER ALT AND DECLARED AN EMER, THEN REQUESTED VECTORS TO JAX. LNDG WAS UNEVENTFUL. COCKPIT RESOURCE MGMNT AND SIMULATOR EMER TRAINING IS VERY EFFECTIVE ONLY UNUSUAL EVENT -- LCL JACKSONVILLE POLICE TREATED EVENT AS AN ACCIDENT. REQUESTING PLTS LICENSE AND MEDICALS.

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.