Narrative:

VFR flight following to hio; after handoff from portland approach; was told to contact hillsboro tower. Numerous calls to tower went unanswered. I could clearly hear tower controller talking to other pilots and became exasperated being ignored. I finally got the controller's attention by stating; 'hillsboro tower XXX; this is my fourth (or fifth) call; how do you hear me!!'?? The controller told me to call the tower after landing for a possible deviation. Called tower and explained that I was a VFR radar handoff from portland approach. He said he could see where there would be a problem in this case but the rules state you must have clearance before entered their airspace. I felt we were cleared in by portland radar approach.lesson learned: what I thought was a handoff from portland approach to hillsboro tower was apparently not a handoff. I was on my own and didn't realize it. I penetrated hillsboro class D without receiving prior approval. This will not happen again.

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Original NASA ASRS Text

Title: A VFR pilot with flight following was handed off from PDX TRACON to HIO Tower but was unable to establish communications and; thinking he had clearance entered HIO airspace; but was later advised he had violated Class D.

Narrative: VFR flight following to HIO; after handoff from Portland Approach; was told to contact Hillsboro Tower. Numerous calls to Tower went unanswered. I could clearly hear Tower Controller talking to other pilots and became exasperated being ignored. I finally got the Controller's attention by stating; 'Hillsboro Tower XXX; this is my fourth (or fifth) call; how do you hear me!!'?? The Controller told me to call the Tower after landing for a possible deviation. Called Tower and explained that I was a VFR radar handoff from Portland Approach. He said he could see where there would be a problem in this case but the rules state you must have clearance before entered their airspace. I felt we were cleared in by Portland Radar Approach.Lesson learned: What I thought was a handoff from Portland Approach to Hillsboro Tower was apparently not a handoff. I was on my own and didn't realize it. I penetrated Hillsboro Class D without receiving prior approval. This will not happen again.

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.