Narrative:

Answered 2 radio calls incorrectly due to fatigue (human factors). Flts xyb and xyb (out and back same flight) changing part 135 work rules would help correct the problem.

Google
 

Original NASA ASRS Text

Title: AN LTT CREWMAN ANSWERED TO THE WRONG CALL SIGNS ON 2 LEGS THE SAME DAY. HE COMPLAINS OF FATIGUE.

Narrative: ANSWERED 2 RADIO CALLS INCORRECTLY DUE TO FATIGUE (HUMAN FACTORS). FLTS XYB AND XYB (OUT AND BACK SAME FLT) CHANGING PART 135 WORK RULES WOULD HELP CORRECT THE PROBLEM.

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.