Heavy transport aircraft first officer reported GPS failures on the approach at this foreign interna...

Attributes
ACN	1656920
Time
Date	201906
Local Time Of Day	1801-2400
Place
Locale Reference	LLLL.ARTCC
State Reference	FO
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Heavy Transport
Operating Under FAR Part	Part 121
Flight Phase	Final Approach Initial Approach
Route In Use	STAR GEFEN1C RNAV
Flight Plan	IFR
Component
Aircraft Component	GPS & Other Satellite Navigation
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 200.68 Flight Crew Total 11974.58 Flight Crew Type 2899.70
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

On downwind descent to 5;000 feet into tlv on the GEFEN1C RNAV arrival; RNAV rnp accuracy degraded below the required 1.0 NM; showing possible 1.5 NM error. Got a number of EICAS messages including GPS-right inop and ads-B updating; unable rnp; etc. Pilot monitoring called ATC and requested radar vectors to final on ILS26 and ATC complied. Simultaneously; an [aircraft] also reported nav issues and requested vectors. We had been briefed by the other relief pilot that this might happen because he had had the same thing happen; plus a map shift; last week when he flew to tlv; so we were prepared for the eventuality and pilot flying intercepted the ILS26 and landed with no further complications. The aircraft automatically wrote up the EICAS messages and we debriefed with the maintenance guys after arrival. The repeated EICAS messages at low altitude were a distraction.

Original NASA ASRS Text

Title: Heavy transport aircraft First Officer reported GPS failures on the approach at this foreign international airport.

Narrative: On downwind descent to 5;000 feet into TLV on the GEFEN1C RNAV Arrival; RNAV RNP accuracy degraded below the required 1.0 NM; showing possible 1.5 NM error. Got a number of EICAS Messages including GPS-R inop and ADS-B updating; Unable RNP; etc. Pilot Monitoring called ATC and requested radar vectors to final on ILS26 and ATC complied. Simultaneously; an [aircraft] also reported nav issues and requested vectors. We had been briefed by the other Relief Pilot that this might happen because he had had the same thing happen; plus a map shift; last week when he flew to TLV; so we were prepared for the eventuality and Pilot Flying intercepted the ILS26 and landed with no further complications. The aircraft automatically wrote up the EICAS messages and we debriefed with the maintenance guys after arrival. The repeated EICAS messages at low altitude were a distraction.

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.

Heavy transport aircraft first officer reported GPS failures on the approach at this foreign international airport.