An air carrier mdt landed en route with 1 engine out.

Attributes
ACN	259809
Time
Date	199312
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : pmm airport : grr
State Reference	MI
Altitude	msl bound lower : 12000 msl bound upper : 12000
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Controlling Facilities	artcc : birk
Operator	common carrier : air carrier
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Navigation In Use	Other Other
Flight Phase	cruise other other other
Route In Use	enroute airway : zau
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 240 flight time total : 4500 flight time type : 2600
ASRS Report	259809
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	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

I noticed a low oil pressure light flicking with the associated oil pressure needle erratic and decreasing in value. The captain decided where we would direct to as the aural alert for the low oil pressure was sounding. He coordinated with ATC as he was completing all emergency and normal checklists. Performed a single engine ILS to a landing without incident. Maintenance performed the night before at a maintenance base was the cause. Callback conversation with reporter revealed the following information: the reporter could not amplify on his statement that 'maintenance was the cause' except to say that he had heard that there was a wrong part installed or possibly a line was not properly tightened. The crew declared an emergency and landed en route at grr.

Original NASA ASRS Text

Title: AN ACR MDT LANDED ENRTE WITH 1 ENG OUT.

Narrative: I NOTICED A LOW OIL PRESSURE LIGHT FLICKING WITH THE ASSOCIATED OIL PRESSURE NEEDLE ERRATIC AND DECREASING IN VALUE. THE CAPT DECIDED WHERE WE WOULD DIRECT TO AS THE AURAL ALERT FOR THE LOW OIL PRESSURE WAS SOUNDING. HE COORDINATED WITH ATC AS HE WAS COMPLETING ALL EMER AND NORMAL CHKLISTS. PERFORMED A SINGLE ENG ILS TO A LNDG WITHOUT INCIDENT. MAINT PERFORMED THE NIGHT BEFORE AT A MAINT BASE WAS THE CAUSE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR COULD NOT AMPLIFY ON HIS STATEMENT THAT 'MAINT WAS THE CAUSE' EXCEPT TO SAY THAT HE HAD HEARD THAT THERE WAS A WRONG PART INSTALLED OR POSSIBLY A LINE WAS NOT PROPERLY TIGHTENED. THE CREW DECLARED AN EMER AND LANDED ENRTE AT GRR.

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.