Narrative:

Shortly after departure, 2 flight attendants reported a strange smell. 1 flight attendant reported it was causing him and a couple of passenger in the area to feel sick. As a precaution, I elected to return to the airport. Due to non radar and uncertainty of problem, I elected to declare an emergency to insure priority handling back to position. An uneventful landing was made. The aircraft was inspected, and returned to service. Callback conversation with reporter revealed the following information: the captain could not explain what actions, if any, that maintenance had taken to solve this problem. He stated that the 2 flight attendants had reported the aroma as akin to an 'electrical odor' so the PIC felt he had to go back and land. He further stated that sometimes the B757/767 produces an aroma parallel to a sour smell, a moisture like smell. Maintenance inspected the rear set of recirculation fans near the mid galley area and had the crew do a run-up prior to the subsequent takeoff to check for smells. Nothing was reported by the flight attendants. Flight attendants did not feel ill on the second try.

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Original NASA ASRS Text

Title: A B757 PIC ELECTS TO RETURN LAND WHEN 2 FLT ATTENDANTS RPT FUMES OF AN ELECTRICAL NATURE THAT MADE THEM FEEL ILL AFTER TKOF FROM TTPP, FO.

Narrative: SHORTLY AFTER DEP, 2 FLT ATTENDANTS RPTED A STRANGE SMELL. 1 FLT ATTENDANT RPTED IT WAS CAUSING HIM AND A COUPLE OF PAX IN THE AREA TO FEEL SICK. AS A PRECAUTION, I ELECTED TO RETURN TO THE ARPT. DUE TO NON RADAR AND UNCERTAINTY OF PROB, I ELECTED TO DECLARE AN EMER TO INSURE PRIORITY HANDLING BACK TO POS. AN UNEVENTFUL LNDG WAS MADE. THE ACFT WAS INSPECTED, AND RETURNED TO SVC. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE CAPT COULD NOT EXPLAIN WHAT ACTIONS, IF ANY, THAT MAINT HAD TAKEN TO SOLVE THIS PROB. HE STATED THAT THE 2 FLT ATTENDANTS HAD RPTED THE AROMA AS AKIN TO AN 'ELECTRICAL ODOR' SO THE PIC FELT HE HAD TO GO BACK AND LAND. HE FURTHER STATED THAT SOMETIMES THE B757/767 PRODUCES AN AROMA PARALLEL TO A SOUR SMELL, A MOISTURE LIKE SMELL. MAINT INSPECTED THE REAR SET OF RECIRCULATION FANS NEAR THE MID GALLEY AREA AND HAD THE CREW DO A RUN-UP PRIOR TO THE SUBSEQUENT TKOF TO CHK FOR SMELLS. NOTHING WAS RPTED BY THE FLT ATTENDANTS. FLT ATTENDANTS DID NOT FEEL ILL ON THE SECOND TRY.

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.