Narrative:

Smoke in cockpit. Performed all checklists. Found smoke coming from flight engineer's seat. Removed power, declared emergency, diverted to slc. Uneventful landing. Callback conversation with reporter revealed the following information: the seat had been installed 2 days previously. It had been involved in a previous incident of smoke when it was installed on a different aircraft. Initially, the fault was thought to be in the control switch, but that was found to be ok. The second suspected problem was the motor. At this point the seat has been removed for further investigation.

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Original NASA ASRS Text

Title: SMOKE IN THE COCKPIT COMING FROM THE FE'S SEAT.

Narrative: SMOKE IN COCKPIT. PERFORMED ALL CHKLISTS. FOUND SMOKE COMING FROM FE'S SEAT. REMOVED PWR, DECLARED EMER, DIVERTED TO SLC. UNEVENTFUL LNDG. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE SEAT HAD BEEN INSTALLED 2 DAYS PREVIOUSLY. IT HAD BEEN INVOLVED IN A PREVIOUS INCIDENT OF SMOKE WHEN IT WAS INSTALLED ON A DIFFERENT ACFT. INITIALLY, THE FAULT WAS THOUGHT TO BE IN THE CTL SWITCH, BUT THAT WAS FOUND TO BE OK. THE SECOND SUSPECTED PROB WAS THE MOTOR. AT THIS POINT THE SEAT HAS BEEN REMOVED FOR FURTHER INVESTIGATION.

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.