Narrative:

When I departed iwa for flg. I forgot to turn the transponder from standby to altitude reporting. I flew under class B airspace for approximately 5 mins until I realized my problem and turned on the transponder. I should put 'turn on transponder' on the runup checklist.

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Original NASA ASRS Text

Title: PLT OF AN SMA SEL FAILED TO TURN ON THE XPONDER DURING CRUISE UNDER CLASS B AIRSPACE.

Narrative: WHEN I DEPARTED IWA FOR FLG. I FORGOT TO TURN THE XPONDER FROM STANDBY TO ALT RPTING. I FLEW UNDER CLASS B AIRSPACE FOR APPROX 5 MINS UNTIL I REALIZED MY PROB AND TURNED ON THE XPONDER. I SHOULD PUT 'TURN ON XPONDER' ON THE RUNUP CHKLIST.

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.