Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 20; Flight Crew Total 6760; Flight Crew Type 800
Aircraft Equipment Problem Less Severe
General None Reported / Taken
Aircraft; Environment - Non Weather Related
[I] was navigating around the Class B airspace near Philadelphia near South Jersey Regional Airport when the GPS signal intermittently stopped. When the signal returned the aircraft appeared right on the airspace boundary; however; according to the visual reference; should have been clear of the airspace. This happened again near Tangier Island; R-6609. The GPS signal stopped operation on both the Garmin 430 and Garmin 396 and they receive signals independently.
C177 pilot experiences loss of GPS signal two times during a flight near PHL Class B airspace on two seperate GPS receivers.