Skyhawk 172/Cutlass 172
Flight Crew Air Transport Pilot (ATP); Flight Crew Flight Instructor
Flight Crew Last 90 Days 10; Flight Crew Total 10000; Flight Crew Type 3000
No Specific Anomaly Occurred All Types
Training flight from Class D airport beneath Class B (PHX). Flew to A39 to practice takeoff and landings. As we were returning over CHD at 2;700 FT MSL we ended up further west than we intended. We were also about 2;700 MSL when Falcon Tower told us that we were about ready to penetrate the floor of the PHX Class B. We did a quick right turn and descended to avoid Class B airspace.
A C172 instructor reported narrowly missing PHX Class B airspace thanks to a warning from FFZ Tower.