Air carrier has oil quantity then oil pressure diminish in cruise. Diverts to suitable airport.

Attributes
ACN	202768
Time
Date	199202
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : elp
State Reference	TX
Altitude	msl bound lower : 23000 msl bound upper : 35000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute airway : mmty
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 17000 flight time type : 2000
ASRS Report	202768
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

Approximately 60 DME north of cuu VOR, oil quantity slowly went to O. Followed company procedures in abnormal section. 10 min later oil pressure went to '0' psi. Secured engine as per fcom. Advised monterey center and started drift down. Landed elp without incident. Flight was from mexico to san in cruise north of durango mexico, we noticed oil quantity gauge on left side acting erratically. As a precaution changed destination to elp. This routing put us closer to suitable airports in case the oil quantity gauge was in fact working properly.

Original NASA ASRS Text

Title: ACR HAS OIL QUANTITY THEN OIL PRESSURE DIMINISH IN CRUISE. DIVERTS TO SUITABLE ARPT.

Narrative: APPROX 60 DME N OF CUU VOR, OIL QUANTITY SLOWLY WENT TO O. FOLLOWED COMPANY PROCS IN ABNORMAL SECTION. 10 MIN LATER OIL PRESSURE WENT TO '0' PSI. SECURED ENG AS PER FCOM. ADVISED MONTEREY CTR AND STARTED DRIFT DOWN. LANDED ELP WITHOUT INCIDENT. FLT WAS FROM MEXICO TO SAN IN CRUISE N OF DURANGO MEXICO, WE NOTICED OIL QUANTITY GAUGE ON L SIDE ACTING ERRATICALLY. AS A PRECAUTION CHANGED DEST TO ELP. THIS RTING PUT US CLOSER TO SUITABLE ARPTS IN CASE THE OIL QUANTITY GAUGE WAS IN FACT WORKING PROPERLY.

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.