A330 first officer reported a loss of both navigation systems during the arrival.

Attributes
ACN	1451428
Time
Date	201705
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	A330
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	Navigational Equipment and Processing
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

While level at 14;000 ft inbound to [destination]; we experienced a dual nav failure. The only EICAS message was a press fault due to the fact that the system did not have a destination for landing. We then decided to [advise ATC] and get radar vectors to the ILS. The captain flew the approach and landed the plane without further incident. Caused by a failure of both navigation systems.

Original NASA ASRS Text

Title: A330 First Officer reported a loss of both navigation systems during the arrival.

Narrative: While level at 14;000 ft inbound to [destination]; we experienced a dual nav failure. The only EICAS message was a Press fault due to the fact that the system did not have a destination for landing. We then decided to [advise ATC] and get radar vectors to the ILS. The Captain flew the approach and landed the plane without further incident. Caused by a failure of both navigation systems.

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.