After departing sql; a C172 instructor pilot was informed by hwd tower that he had entered hwd class...

Attributes
ACN	1314307
Time
Date	201512
Local Time Of Day	1201-1800
Place
Locale Reference	HWD.Airport
State Reference	CA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Visual Approach
Flight Plan	None
Person 1
Function	Instructor Pilot Not Flying
Qualification	Flight Crew Flight Instructor Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 150 Flight Crew Total 4800 Flight Crew Type 800
Events
Anomaly	ATC Issue All Types Airspace Violation All Types Deviation - Procedural FAR

Narrative:

While flying VFR from san carlos airport south of the dumbarton bridge; I was navigating via a tac sfo area current chart while transitioning from easterly to a southerly heading. I selected the tower freq of hayward to have awareness of any possible airplanes in my vicinity. While listening on the tower freq; I got a blind call out from the tower on my position in relation to hayward airport; so I responded and was advised I had entered class D without permission and I idented my position as asked by the tower and exited southward along the waterline. I had established two way communications with them; and they asked me to file a pilot deviation form via a phone call in which I did after the flight review I was conducting. I was constantly aware of my position; and according to my navigation; did not enter the airspace in question; but am able to apply my situation to all future students and pilots requiring a flight review in the future.

Original NASA ASRS Text

Title: After departing SQL; a C172 instructor pilot was informed by HWD Tower that he had entered HWD Class D without a clearance. The Instructor was using a SFO TAC for navigation and disputes the claim that he was in Class D.

Narrative: While flying VFR from San Carlos Airport south of the Dumbarton Bridge; I was navigating via a TAC SFO area current chart while transitioning from easterly to a southerly heading. I selected the Tower freq of Hayward to have awareness of any possible airplanes in my vicinity. While listening on the Tower freq; I got a blind call out from the tower on my position in relation to Hayward airport; so I responded and was advised I had entered class D without permission and I Idented my position as asked by the Tower and exited southward along the waterline. I had established two way communications with them; and they asked me to file a pilot deviation form via a phone call in which I did after the flight review I was conducting. I was constantly aware of my position; and according to my navigation; did not enter the airspace in question; but am able to apply my situation to all future students and pilots requiring a flight review in the future.

Data retrieved from NASA's ASRS site 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.

After departing sql; a C172 instructor pilot was informed by hwd tower that he had entered hwd class D without a clearance. The instructor was using a sfo tac for navigation and disputes the claim that he was in class D.