Be-55 pilot reported that while flying in clear weather conditions; the ads-B display showed a line ...

Attributes
ACN	1760243
Time
Date	202009
Local Time Of Day	0601-1200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Baron 55/Cochise
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Direct
Flight Plan	None
Component
Aircraft Component	PFD
Person 1
Function	Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Private
Experience	Flight Crew Last 90 Days 18 Flight Crew Total 1200 Flight Crew Type 250
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

Weather was clear; light winds; no turbulence. Xm weather on 530W and portable garmin 696 indicated no precipitation at all. Ads-B system showed a line of magenta with red and yellow levels of intensity at our location. This indication was completely inaccurate; as there was no precipitation. Two other aircraft in our group reported the same inaccurate display. We were midway between jwn and M93 in cavu conditions.was the ads-B system hacked? How can the system present such misinformation? I now have no confidence in ads-B weather depiction. If it can report significant fronts that do not exist; can it report clear conditions when there is bad weather?also; hours after the flight; I called the flight up on flightaware and it showed weather that did not exist. I presume that flightaware uses the same data that ads-B is using.

Original NASA ASRS Text

Title: BE-55 pilot reported that while flying in clear weather conditions; the ADS-B display showed a line of heavy precipitation that did not exist at the current aircraft position.

Narrative: Weather was clear; light winds; no turbulence. XM weather on 530W and portable Garmin 696 indicated no precipitation at all. ADS-B system showed a line of magenta with red and yellow levels of intensity at our location. This indication was completely inaccurate; as there was no precipitation. Two other aircraft in our group reported the same inaccurate display. We were midway between JWN and M93 in CAVU conditions.Was the ADS-B system hacked? How can the system present such misinformation? I now have no confidence in ADS-B weather depiction. If it can report significant fronts that do not exist; can it report clear conditions when there is bad weather?Also; hours after the flight; I called the flight up on FlightAware and it showed weather that did not exist. I presume that FlightAware uses the same data that ADS-B is using.

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.

Be-55 pilot reported that while flying in clear weather conditions; the ads-B display showed a line of heavy precipitation that did not exist at the current aircraft position.