Cessna 180 Skywagon
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Commercial; Flight Crew Flight Engineer; Flight Crew Flight Instructor
Flight Crew Last 90 Days 190; Flight Crew Total 25000; Flight Crew Type 300
Airspace Violation All Types
I was on a VFR flight to Falcon Field (FFZ); enroute at 3;200 FT MSL to overfly Chandler Class D Airspace. I had IAW tuned into GPS to avoid IAW Class D Airspace. I had the second channel on GPS tuned into PXR VOR to avoid PHX Class B Airspace.I was also monitoring CHD Tower on the Number 1 Comm for traffic information on overflight. I was constantly switching GPS to check distance from IAW; CHD; PXR VOR; and FFZ. At approximately 9 miles south of FFZ I called to let them know I was inbound for landing. Tower responded by asking me to ident and to enter left downwind for [Runway] 22L. They later said they did not observe my ident; but to enter left downwind. Thinking something was wrong with my transponder I said of and asked if I could ident again. After some confusion I realized that I had not switched from CHD Tower frequency to FFZ Tower frequency. Thinking that I had been with Falcon Tower I had entered their airspace without clearance.I turned away from Falcon traffic pattern called in and was cleared to enter a left downwind for [Runway] 22L. Rest of flight was uneventful and there was no traffic conflict with Falcon Field.Bottom line; after checking and double checking my position in the airspace I failed to double check my Comm frequency.
A C180 pilot; after Tower informed them they were not receiving the transponder ident; realized that they had not switched to FFZ Tower frequency and entered FFZ Class D airspace without clearance.