B-777 captain reported experiencing GPS jamming multiple times during approach to tel aviv airport.

Attributes
ACN	1683313
Time
Date	201909
Place
Locale Reference	LLLL.ARTCC
State Reference	FO
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Descent
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 176 Flight Crew Total 22000 Flight Crew Type 8499
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

I was surprised to read the tlv GPS ops alert (rescinding the 'GPS updating off procedures' ops alert) saying; 'tlv authorities have reported that GPS signals are no longer compromised' prior to departing for tlv. On the numerous trips I have flown there since last year; the GPS has been jammed on every trip. As we approached the tlv fir; we got the ads-B EICAS; status; and ads-B checklist prompt. At the same time; at the bottom of the nd; we went from GPS to inertial--exactly as it has happened on all the other tlv arrivals I've flown since last year. After completing the checklist; (switching transponder from left to right); we were no longer jammed and the EICAS message went away and the airplane switched back to GPS updating. A few minutes later; the exact same scenario happened again. Finally; as we approached the shoreline; it happened for a third time.

Original NASA ASRS Text

Title: B-777 Captain reported experiencing GPS jamming multiple times during approach to Tel Aviv airport.

Narrative: I was surprised to read the TLV GPS Ops Alert (rescinding the 'GPS Updating OFF Procedures' Ops Alert) saying; 'TLV authorities have reported that GPS signals are no longer compromised' prior to departing for TLV. On the numerous trips I have flown there since last year; the GPS has been jammed on EVERY trip. As we approached the TLV FIR; we got the ADS-B EICAS; STATUS; and ADS-B checklist prompt. At the same time; at the bottom of the ND; we went from GPS to inertial--exactly as it has happened on all the other TLV arrivals I've flown since last year. After completing the checklist; (switching transponder from L to R); we were no longer jammed and the EICAS message went away and the airplane switched back to GPS updating. A few minutes later; the exact same scenario happened again. Finally; as we approached the shoreline; it happened for a third time.

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.