Narrative:

Dtw city airport tower reported my position to dtw metropolitan approach as being in their TCA. My indicated altitude was 3800 ft MSL with current altimeter set in from the ATIS at city. After takeoff from city, tower reported my altitude to metropolitan at 4000 ft MSL. I was told to identify twice. After second time, I was told to contact dtw metropolitan approach on the ground by phone. I did. He said that there was not a problem but city reported my altitude to him at 4000 ft MSL (in the TCA). This whole problem could have been avoided if dtw city controller would have just asked me my altitude to check it with my mode C. I still do not know if the mode C is reading correctly. But, with a little bit of courtesy by the city tower, the problem never would have been reported by asking my altitude to xchk it with my mode C.

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Original NASA ASRS Text

Title: TWR CTLR RPTED TO AN ADJACENT TRACON. THE RPTR'S SMA WAS AT 4000 FT IN THE TCA VICE 3800 FT, BELOW THE TCA.

Narrative: DTW CITY ARPT TWR RPTED MY POS TO DTW METRO APCH AS BEING IN THEIR TCA. MY INDICATED ALT WAS 3800 FT MSL WITH CURRENT ALTIMETER SET IN FROM THE ATIS AT CITY. AFTER TKOF FROM CITY, TWR RPTED MY ALT TO METRO AT 4000 FT MSL. I WAS TOLD TO IDENT TWICE. AFTER SECOND TIME, I WAS TOLD TO CONTACT DTW METRO APCH ON THE GND BY PHONE. I DID. HE SAID THAT THERE WAS NOT A PROBLEM BUT CITY RPTED MY ALT TO HIM AT 4000 FT MSL (IN THE TCA). THIS WHOLE PROBLEM COULD HAVE BEEN AVOIDED IF DTW CITY CTLR WOULD HAVE JUST ASKED ME MY ALT TO CHK IT WITH MY MODE C. I STILL DO NOT KNOW IF THE MODE C IS READING CORRECTLY. BUT, WITH A LITTLE BIT OF COURTESY BY THE CITY TWR, THE PROBLEM NEVER WOULD HAVE BEEN RPTED BY ASKING MY ALT TO XCHK IT WITH MY MODE C.

Data retrieved from NASA's ASRS site as of July 2007 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.