Crj-700 first officer reported problems associated with GPS navigation.

Attributes
ACN	1653656
Time
Date	201906
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet 700 ER/LR (CRJ700)
Operating Under FAR Part	Part 121
Flight Phase	Climb
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
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance Deviation - Track / Heading All Types

Narrative:

Delays were taken to assess and troubleshoot ongoing navigation issues specific to crj aircraft. Flight departed to ZZZ. On takeoff; it became evident a discrepancy between mfd map and VOR green needles was occurring although corrective action to prevent this issue was taken while on the ground during delay. Mfd map placed aircraft very far from actual location. Pilot flying was operating in white needles with auto tune on. Pilot monitoring switched from whites needles to green needles to verify VOR signal. Upon recognition of navigational discrepancy; ATC queried our heading then assigned vectors. Radar vectors requested the rest of flight. Issues with navigation satellites specific to crj aircraft. Aircraft had difficulty establishing its location in auto tune mode. Instruction on the use of auto tune and verification of accuracy on ground prior to departure.

Original NASA ASRS Text

Title: CRJ-700 First Officer reported problems associated with GPS navigation.

Narrative: Delays were taken to assess and troubleshoot ongoing navigation issues specific to CRJ aircraft. Flight departed to ZZZ. On takeoff; it became evident a discrepancy between MFD Map and VOR green needles was occurring although corrective action to prevent this issue was taken while on the ground during delay. MFD Map placed aircraft very far from actual location. Pilot Flying was operating in white needles with auto tune on. Pilot Monitoring switched from whites needles to green needles to verify VOR signal. Upon recognition of navigational discrepancy; ATC queried our heading then assigned vectors. Radar vectors requested the rest of flight. Issues with navigation satellites specific to CRJ aircraft. Aircraft had difficulty establishing its location in auto tune mode. Instruction on the use of auto tune and verification of accuracy on ground prior to departure.

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.