Medium large transport has engine oil pressure loss on #2 engine. Shut down, divert.

Attributes
ACN	262103
Time
Date	199401
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : cmh
State Reference	OH
Altitude	msl bound lower : 23000 msl bound upper : 23000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute : on vectors
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 : 200 flight time total : 11000 flight time type : 2000
ASRS Report	262103
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 7000 flight time type : 2000
ASRS Report	262098
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

While cruising at FL230, we experienced a loss of engine oil pressure on our #2 engine. After shutting down the affected engine as per procedure, we declared an emergency and landed at the nearest suitable airport, in this case kcmh. The aircraft logbook records showed that company maintenance personnel had installed new oil pressure sending units on both engines during the night right.O.north. Of the aircraft. Following our arrival in cmh, inspection of the #2 engine showed that the probable culprit was a defective mounting gasket for the sending unit, which caused both a loss of pressure and quantity. The most difficult part of dealing with this emergency was the high workload, being hindered by radio calls from ATC and company wanting information.

Original NASA ASRS Text

Title: MLG HAS ENG OIL PRESSURE LOSS ON #2 ENG. SHUT DOWN, DIVERT.

Narrative: WHILE CRUISING AT FL230, WE EXPERIENCED A LOSS OF ENG OIL PRESSURE ON OUR #2 ENG. AFTER SHUTTING DOWN THE AFFECTED ENG AS PER PROC, WE DECLARED AN EMER AND LANDED AT THE NEAREST SUITABLE ARPT, IN THIS CASE KCMH. THE ACFT LOGBOOK RECORDS SHOWED THAT COMPANY MAINT PERSONNEL HAD INSTALLED NEW OIL PRESSURE SENDING UNITS ON BOTH ENGS DURING THE NIGHT R.O.N. OF THE ACFT. FOLLOWING OUR ARR IN CMH, INSPECTION OF THE #2 ENG SHOWED THAT THE PROBABLE CULPRIT WAS A DEFECTIVE MOUNTING GASKET FOR THE SENDING UNIT, WHICH CAUSED BOTH A LOSS OF PRESSURE AND QUANTITY. THE MOST DIFFICULT PART OF DEALING WITH THIS EMER WAS THE HIGH WORKLOAD, BEING HINDERED BY RADIO CALLS FROM ATC AND COMPANY WANTING INFO.

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.