Crj-200 flight crew reports accepting an aircraft with the FMC on MEL for not auto tuning VOR's. Enr...

Attributes
ACN	1200377
Time
Date	201409
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet 200 ER/LR (CRJ200)
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Route In Use	Visual Approach
Flight Plan	IFR
Component
Aircraft Component	ILS/VOR
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Track / Heading All Types

Narrative:

In flight; while using VOR navigation we began to have erroneous signals from both Nav1 and Nav2 about 50 miles north of ZZZ [VOR.] ATC was notified and we received radar vectors/direct ZZZ1 [VOR] when able. We assumed at this point based on the indications; it was an issue with the VOR. I was able to positively identification ZZZ1 [VOR] and we began to navigate on our own. ATC cleared us to descend; and as we descended we entered IMC and ice. It was around that time we lost identification on the station and again received unreliable signals from both VOR receivers. We again notified ATC and requested vectors for the remainder of the flight. We descended via radar vectors to the visual without incident. Prior to conducting a visual approach and in visual conditions; the navigation radio was tuned to the localizer frequency and appeared to be receiving accurate signals. This type of incident could possibly be avoided with further troubleshooting involving MEL with issues concerning VHF navigation. Furthermore the threat could be mitigated with an additional source of navigation.

Original NASA ASRS Text

Title: CRJ-200 flight crew reports accepting an aircraft with the FMC on MEL for not auto tuning VOR's. Enroute it is determined that the VOR's themselves may be the issue and radar vectors are requested to complete the flight.

Narrative: In flight; while using VOR navigation we began to have erroneous signals from both Nav1 and Nav2 about 50 miles north of ZZZ [VOR.] ATC was notified and we received radar vectors/direct ZZZ1 [VOR] when able. We assumed at this point based on the indications; it was an issue with the VOR. I was able to positively ID ZZZ1 [VOR] and we began to navigate on our own. ATC cleared us to descend; and as we descended we entered IMC and ice. It was around that time we lost ID on the station and again received unreliable signals from both VOR receivers. We again notified ATC and requested vectors for the remainder of the flight. We descended via radar vectors to the Visual without incident. Prior to conducting a Visual Approach and in visual conditions; the NAV Radio was tuned to the localizer frequency and appeared to be receiving accurate signals. This type of incident could possibly be avoided with further troubleshooting involving MEL with issues concerning VHF navigation. Furthermore the threat could be mitigated with an additional source of navigation.

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.

Crj-200 flight crew reports accepting an aircraft with the FMC on MEL for not auto tuning VOR's. Enroute it is determined that the VOR's themselves may be the issue and radar vectors are requested to complete the flight.