Narrative:

I was flying with another airplane westbound north of ontario class C with a final destination to the southwest. I split with the other aircraft and was going to fly southeast under the ZZZ1 class B. I confused ZZZ2 with ZZZ and was further east than I thought. I was previously using an ipad with moving map software to identify my position but this system quit working (GPS receiver went dead even though it was connected with ship power. This unit has failed). My main concern was to stay away from ZZZ1 class B and so I went further east to make sure I was well clear. I realized that I had entered the class C and I was not talking to anyone. I exited class C as quickly as possible. I am in the habit of talking to enroute controllers for advisories. I was not doing so because I had been flying with another aircraft and had not yet called in. Additionally; I was counting on a portable display that quit working. I should have flight planned better; and entered waypoints into the aircraft's panel GPS to maintain situational awareness.

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Original NASA ASRS Text

Title: A pilot flying under LAX Class B entered ONT Class C at 4000' after his iPad failed and he lost situational awareness.

Narrative: I was flying with another airplane westbound north of Ontario Class C with a final destination to the southwest. I split with the other aircraft and was going to fly southeast under the ZZZ1 Class B. I confused ZZZ2 with ZZZ and was further east than I thought. I was previously using an iPad with moving map software to identify my position but this system quit working (GPS receiver went dead even though it was connected with ship power. This unit has failed). My main concern was to stay away from ZZZ1 Class B and so I went further east to make sure I was well clear. I realized that I had entered the Class C and I was not talking to anyone. I exited Class C as quickly as possible. I am in the habit of talking to enroute controllers for advisories. I was not doing so because I had been flying with another aircraft and had not yet called in. Additionally; I was counting on a portable display that quit working. I should have flight planned better; and entered waypoints into the aircraft's panel GPS to maintain situational awareness.

Data retrieved from NASA's ASRS site as of April 2012 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.