Flight Crew Last 90 Days 12; Flight Crew Total 240; Flight Crew Type 190
Airspace Violation All Types; Deviation / Discrepancy - Procedural Published Material / Policy
Forgot to turn on transponder while within the 30 mile radius around Phoenix. Turned on transponder when I noticed it was off.
A small aircraft pilot forgot to turn on their transponder while flying within a 30 mile radius of PHX Class B airspace.