Narrative:

Part 121 operations. I had an equipment problem. Trouble starting engine #1 of a 2-ENG aircraft. First officer and I correctly idented the problem. I misinterpreted our company MEL and dispatched with the inoperative part. Flight was uneventful, but I subsequently discovered that item in question was not dispatchable after all. I have had this same problem before in the dispatchable confign, which led me to not take a close enough look at our MEL. I also think that fatigue played a part. We were at the end of a long duty day (7 hours and 30 mins of flying on 5 legs, with numerous small delays).

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Original NASA ASRS Text

Title: B737 CREW HAD TROUBLE STARTING #1 ENG.

Narrative: PART 121 OPS. I HAD AN EQUIP PROB. TROUBLE STARTING ENG #1 OF A 2-ENG ACFT. FO AND I CORRECTLY IDENTED THE PROB. I MISINTERPRETED OUR COMPANY MEL AND DISPATCHED WITH THE INOP PART. FLT WAS UNEVENTFUL, BUT I SUBSEQUENTLY DISCOVERED THAT ITEM IN QUESTION WAS NOT DISPATCHABLE AFTER ALL. I HAVE HAD THIS SAME PROB BEFORE IN THE DISPATCHABLE CONFIGN, WHICH LED ME TO NOT TAKE A CLOSE ENOUGH LOOK AT OUR MEL. I ALSO THINK THAT FATIGUE PLAYED A PART. WE WERE AT THE END OF A LONG DUTY DAY (7 HRS AND 30 MINS OF FLYING ON 5 LEGS, WITH NUMEROUS SMALL DELAYS).

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.