L1011 flight crew shuts down number 1 engine and returns to departure airport due to oil filter/low ...

Attributes
ACN	755174
Time
Date	200709
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 33000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	common carrier : air carrier
Make Model Name	L-1011 Tri-Star All Series
Operating Under FAR Part	Part 91
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 : 50 flight time total : 25000 flight time type : 7700
ASRS Report	755174
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : oil filter/press light
Resolutory Action	flight crew : declared emergency flight crew : overcame equipment problem other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

In oceanic airspace at FL330; we requested a turn back to ZZZ and FL250 because the #1 engine 'filter oil pressure' light illuminated and oil pressure dropped. Awaiting clearance the engine reached critical parameters necessitating shutdown. We declared an emergency and deviated from our clearance by descending out of FL330 being unable to maintain altitude on 2 engines. We received clearance for lower altitude and return to ZZZ. In contact with center radar we cancelled the emergency and landed without incident.

Original NASA ASRS Text

Title: L1011 FLT CREW SHUTS DOWN NUMBER 1 ENGINE AND RETURNS TO DEP ARPT DUE TO OIL FILTER/LOW PRESSURE WARNING.

Narrative: IN OCEANIC AIRSPACE AT FL330; WE REQUESTED A TURN BACK TO ZZZ AND FL250 BECAUSE THE #1 ENG 'FILTER OIL PRESSURE' LIGHT ILLUMINATED AND OIL PRESSURE DROPPED. AWAITING CLRNC THE ENG REACHED CRITICAL PARAMETERS NECESSITATING SHUTDOWN. WE DECLARED AN EMER AND DEVIATED FROM OUR CLRNC BY DSNDING OUT OF FL330 BEING UNABLE TO MAINTAIN ALT ON 2 ENGS. WE RECEIVED CLRNC FOR LOWER ALT AND RETURN TO ZZZ. IN CONTACT WITH CTR RADAR WE CANCELLED THE EMER AND LANDED WITHOUT INCIDENT.

Data retrieved from NASA's ASRS site as of January 2009 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.

L1011 flight crew shuts down number 1 engine and returns to departure airport due to oil filter/low pressure warning.