B777 captain reported possible GPS jamming.

Attributes
ACN	1697483
Time
Date	201911
Aircraft 1
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Route In Use	Direct
Flight Plan	IFR
Component
Aircraft Component	GPS & Other Satellite Navigation
Person 1
Function	Captain
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 206.33 Flight Crew Total 15694.87 Flight Crew Type 8626.42
Events
Anomaly	Aircraft Equipment Problem Less Severe Inflight Event / Encounter Other / Unknown

Narrative:

Approximately 80 NM from the tlv fir while in the nicosia fir; we lost our GPS. I believe it was because it was being jammed. We turned on 'radio updating' and advised ATC. Approaching the airport; we regained the use of the GPS system. This is the second time my GPS has been jammed since the ops alert dealing with GPS jamming in the tlv fir was rescinded.

Original NASA ASRS Text

Title: B777 Captain reported possible GPS jamming.

Narrative: Approximately 80 NM from the TLV FIR while in the Nicosia FIR; we lost our GPS. I believe it was because it was being jammed. We turned on 'Radio Updating' and advised ATC. Approaching the airport; we regained the use of the GPS system. This is the second time my GPS has been jammed since the Ops Alert dealing with GPS jamming in the TLV FIR was rescinded.

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.