Narrative:

Telephoned la coast TRACON for IFR clearance to long beach airport from meadowlark airport (private uncontrolled) 10 miles away. TRACON gave takeoff window from xx:40 to xx:45, and issued clearance at xx:25. I did not check my watch at that point. After takeoff ATC gave me vectors for the approach and chastised me for taking off early. They said supervisor wanted a time check, but I didn't hear anymore about it. Later I checked watch against clock at FBO and it was fast.

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Original NASA ASRS Text

Title: TKOF PRIOR TO IFR RELEASE TIME.

Narrative: TELEPHONED LA COAST TRACON FOR IFR CLRNC TO LONG BEACH ARPT FROM MEADOWLARK ARPT (PRIVATE UNCTLED) 10 MILES AWAY. TRACON GAVE TKOF WINDOW FROM XX:40 TO XX:45, AND ISSUED CLRNC AT XX:25. I DID NOT CHK MY WATCH AT THAT POINT. AFTER TKOF ATC GAVE ME VECTORS FOR THE APCH AND CHASTISED ME FOR TAKING OFF EARLY. THEY SAID SUPVR WANTED A TIME CHK, BUT I DIDN'T HEAR ANYMORE ABOUT IT. LATER I CHKED WATCH AGAINST CLOCK AT FBO AND IT WAS FAST.

Data retrieved from NASA's ASRS site as of August 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.