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L1011 flight crew shuts down an engine for oil filter bypass warning. Flight crew elects to return to departure airport where parts are available for repairs.
| Attributes | |
| ACN | 755821 |
| 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 | IMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Make Model Name | L-1011 Tri-Star All Series |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : multi engine pilot : atp pilot : flight engineer pilot : cfi |
| Experience | flight time last 90 days : 10 flight time total : 12000 flight time type : 5000 |
| ASRS Report | 755821 |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude |
| Independent Detector | aircraft equipment other aircraft equipment : filter bypass other flight crewa |
| Resolutory Action | flight crew : declared emergency other |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
Just 30 mins flight time at FL330; we were ferrying an L1011. We got a caution warning light for #1 engine oil filter bypass light on which in flight requires a shutdown. We also needed a drift down from FL330 to FL250 to maintain safe speed and flight envelope. We advised center. After several mins of no clearance down; we declared an emergency and started to FL250. Once we declared emergency we were then able to get clearance to ZZZ1 where maintenance and parts to repair this fault were readily available. Landing in ZZZ would have done no good; as spare parts we needed were in the onboard fly-a-way kit. With 2 remaining good engines and an APU running; ZZZ1 was the suitable airfield of choice for landing. All emergency/abnormal/additional procedures per flight manual were performed. Return leg to ZZZ1 and landing were uneventful.
Original NASA ASRS Text
Title: L1011 FLT CREW SHUTS DOWN AN ENGINE FOR OIL FILTER BYPASS WARNING. FLT CREW ELECTS TO RETURN TO DEPARTURE ARPT WHERE PARTS ARE AVAILABLE FOR REPAIRS.
Narrative: JUST 30 MINS FLT TIME AT FL330; WE WERE FERRYING AN L1011. WE GOT A CAUTION WARNING LIGHT FOR #1 ENG OIL FILTER BYPASS LIGHT ON WHICH IN FLT REQUIRES A SHUTDOWN. WE ALSO NEEDED A DRIFT DOWN FROM FL330 TO FL250 TO MAINTAIN SAFE SPD AND FLT ENVELOPE. WE ADVISED CTR. AFTER SEVERAL MINS OF NO CLRNC DOWN; WE DECLARED AN EMER AND STARTED TO FL250. ONCE WE DECLARED EMER WE WERE THEN ABLE TO GET CLRNC TO ZZZ1 WHERE MAINT AND PARTS TO REPAIR THIS FAULT WERE READILY AVAILABLE. LNDG IN ZZZ WOULD HAVE DONE NO GOOD; AS SPARE PARTS WE NEEDED WERE IN THE ONBOARD FLY-A-WAY KIT. WITH 2 REMAINING GOOD ENGS AND AN APU RUNNING; ZZZ1 WAS THE SUITABLE AIRFIELD OF CHOICE FOR LNDG. ALL EMER/ABNORMAL/ADDITIONAL PROCS PER FLT MANUAL WERE PERFORMED. RETURN LEG TO ZZZ1 AND LNDG WERE UNEVENTFUL.
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.