Helicopter
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 60; Flight Crew Type 4700
Confusion
Aircraft Equipment Problem Less Severe; Airspace Violation All Types; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Company Policy; Human Factors
I had to ferry a helicopter to ZZZ. While en-route; I noticed the iPad my company uses for navigation had lost signal; therefore the sectional map underlay was not loading properly. There was an area on the digital sectional that was not loading; but I could still follow my navigational route displayed on the iPad. When the iPad finally got service; I could see the navigational line took me right through a Class D airspace. I was unaware of the Class D airspace on my route; as I could not see it previously. I was unable to contact ATC at the airport at that time because I was already well past the airport and out of range. I should have a backup GPS in the aircraft with me at all times and will begin to do so in case the in aircraft GPS loses signal again. I will also be reviewing every route prior to departing to ensure there is no controlled airspace or any other obstructions in my path.
Pilot reported loss of navigational display on the Electronic Flight Bag (iPad) due to GPS signal loss.