Air carrier jet crew had oil quantity loss to zero.

Attributes
ACN	553226
Time
Date	200207
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : gjt.airport
State Reference	CO
Altitude	msl single value : 31000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdv.artcc
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 16000 flight time type : 11000
ASRS Report	553226
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : oil quantity indicator other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : diverted to another airport flight crew : declared emergency flight crew : landed in emergency condition
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Noticed decreasing oil quantity in left engine. Oil pressure and temperature remained normal throughout flight. Oil quantity decreased to zero. Approach and landing uneventful. We declared emergency and diverted to slc (planned destination was lax).

Original NASA ASRS Text

Title: ACR JET CREW HAD OIL QUANTITY LOSS TO ZERO.

Narrative: NOTICED DECREASING OIL QUANTITY IN L ENG. OIL PRESSURE AND TEMP REMAINED NORMAL THROUGHOUT FLT. OIL QUANTITY DECREASED TO ZERO. APCH AND LNDG UNEVENTFUL. WE DECLARED EMER AND DIVERTED TO SLC (PLANNED DEST WAS LAX).

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.