While diverting to einn with an engine oil leak and on the ILS runway 6; air carrier flight crew cap...

Attributes
ACN	1332368
Time
Date	201602
Local Time Of Day	0601-1200
Place
Locale Reference	EINN.Airport
State Reference	FO
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Widebody Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Cruise Final Approach
Route In Use	STAR LUPOR 2E
Flight Plan	IFR
Component
Aircraft Component	Lubrication Oil
Person 1
Function	Pilot Not Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 116 Flight Crew Total 16010 Flight Crew Type 822
Person 2
Function	Pilot Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 98
Events
Anomaly	Deviation - Procedural Clearance Deviation - Track / Heading All Types Inflight Event / Encounter CFTT / CFIT

Narrative:

Oil leak on left engine. At 30 west I noticed oil was down to 3qts. Monitored and just past our second critical point oil went down to 0 qts. Oil pressure stayed ok for about 40 minutes and then started going down from 60 psi to 35 psi. Ran engine at idle during last 30 minutes and made it to snn airport with both engines running. While diverting into einn the first officer was flying and we were cleared for the approach ILS 06 outside of elpom at 3;000 feet. Approach mode was armed and we got a localizer capture but it was a couple miles left of the magenta line. I was trying to figure out why we were left of course on the localizer but not on the extended centerline. The glide slope captured and the first officer followed it down to about 2;000 feet and I didn't notice. We received a terrain warning. We immediately climbed back to 3;000. ATC also advised us of the low altitude. Rejoined the real localizer and followed it to a landing that I landed. I believe we captured a false localizer and glide slope for some reason. Maintenance had just fixed a leak in houston before flight. 21 quarts added.

Original NASA ASRS Text

Title: While diverting to EINN with an engine oil leak and on the ILS Runway 6; air carrier flight crew captured a false ILS signal; descended on the glide slope; and received a terrain warning.

Narrative: Oil leak on left engine. At 30 west I noticed oil was down to 3qts. Monitored and just past our second critical point oil went down to 0 qts. Oil pressure stayed ok for about 40 minutes and then started going down from 60 psi to 35 psi. Ran engine at idle during last 30 minutes and made it to SNN airport with both engines running. While diverting into EINN the FO was flying and we were cleared for the approach ILS 06 outside of Elpom at 3;000 feet. Approach mode was armed and we got a LOC capture but it was a couple miles left of the magenta line. I was trying to figure out why we were left of course on the localizer but not on the extended centerline. The glide slope captured and the FO followed it down to about 2;000 feet and I didn't notice. We received a terrain warning. We immediately climbed back to 3;000. ATC also advised us of the low altitude. Rejoined the real localizer and followed it to a landing that I landed. I believe we captured a false localizer and glide slope for some reason. Maintenance had just fixed a leak in Houston before flight. 21 quarts added.

Data retrieved from NASA's ASRS site 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.

While diverting to einn with an engine oil leak and on the ILS runway 6; air carrier flight crew captured a false ILS signal; descended on the glide slope; and received a terrain warning.