Narrative:

The route was entered into the FMS (normal company routing). However, due to a line of thunderstorms along our route, a different route was filed by our dispatch. Because of unusual circumstances surrounding our preflight preparation, the routing was not verified by the crew members involved. Once airborne, ATC inquired to verify our route. We read back the company routing from the dispatch release. The mistake was made because the original route was typed into the FMS.

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Original NASA ASRS Text

Title: ACR FLC DOES NOT RE-ENTER NEW COMPANY DISPATCH FLT PLAN AND FLC FLY OLD FILED RTE. ATC CHALLENGES PIC AND INCORRECT FLOWN RTE IS RECOGNIZED.

Narrative: THE RTE WAS ENTERED INTO THE FMS (NORMAL COMPANY ROUTING). HOWEVER, DUE TO A LINE OF TSTMS ALONG OUR RTE, A DIFFERENT RTE WAS FILED BY OUR DISPATCH. BECAUSE OF UNUSUAL CIRCUMSTANCES SURROUNDING OUR PREFLT PREPARATION, THE ROUTING WAS NOT VERIFIED BY THE CREW MEMBERS INVOLVED. ONCE AIRBORNE, ATC INQUIRED TO VERIFY OUR RTE. WE READ BACK THE COMPANY ROUTING FROM THE DISPATCH RELEASE. THE MISTAKE WAS MADE BECAUSE THE ORIGINAL RTE WAS TYPED INTO THE FMS.

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.