Narrative:

Just at rotation, noticed acrid smoke odor. Flight attendants notified. They also smelled some 'sewage type' odor. Returned for immediate visual landing/overweight at 110000 pounds. No fuel jettison available on B737. Brake application at 90 KTS. Suspect other inbound flight crew on prior flight had bird strike. Possible remaining carcass still in pneumatic areas. Callback conversation with reporter revealed the following information: reporter had initially, at about 145 KTS, turned off the galley power on the first takeoff roll since he had a previous experience with a cabin attendant's purse being in a galley oven and creating an acrid condition. He felt that to abort at that high speed was more dangerous than continuing. Upon return to the ramp, the air carrier maintenance ground crew did an engine check, runup and wrote off the logbook entry as, 'unable to duplicate.' the PIC said he was not going to accept the aircraft. After he then told the ground crew that the aircraft had suffered a bird strike (in the logbook). They took it out again, isolating the air conditioning packs during the engine check. The odor was found again. They found roasted bird parts in parts of the pneumatic system. Meanwhile, the reporter had been given another aircraft and, after a 2 hour delay, the flight was on its way again. He said he wasn't about to have passenger on a 'test flight.' that original aircraft suffered returns in the next 2 days following this event because of acrid odors.

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Original NASA ASRS Text

Title: B737-200 RETURNS FOR AN OVERWT LNDG AFTER SMOKE AND AN ACRID ODOR IS DETECTED THROUGHOUT THE ACFT. PIC REMARKS ABOUT THE LACK OF FUEL DUMP CAPABILITY IN THIS TYPE ACFT.

Narrative: JUST AT ROTATION, NOTICED ACRID SMOKE ODOR. FLT ATTENDANTS NOTIFIED. THEY ALSO SMELLED SOME 'SEWAGE TYPE' ODOR. RETURNED FOR IMMEDIATE VISUAL LNDG/OVERWT AT 110000 LBS. NO FUEL JETTISON AVAILABLE ON B737. BRAKE APPLICATION AT 90 KTS. SUSPECT OTHER INBOUND FLC ON PRIOR FLT HAD BIRD STRIKE. POSSIBLE REMAINING CARCASS STILL IN PNEUMATIC AREAS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR HAD INITIALLY, AT ABOUT 145 KTS, TURNED OFF THE GALLEY PWR ON THE FIRST TKOF ROLL SINCE HE HAD A PREVIOUS EXPERIENCE WITH A CABIN ATTENDANT'S PURSE BEING IN A GALLEY OVEN AND CREATING AN ACRID CONDITION. HE FELT THAT TO ABORT AT THAT HIGH SPD WAS MORE DANGEROUS THAN CONTINUING. UPON RETURN TO THE RAMP, THE ACR MAINT GND CREW DID AN ENG CHK, RUNUP AND WROTE OFF THE LOGBOOK ENTRY AS, 'UNABLE TO DUPLICATE.' THE PIC SAID HE WAS NOT GOING TO ACCEPT THE ACFT. AFTER HE THEN TOLD THE GND CREW THAT THE ACFT HAD SUFFERED A BIRD STRIKE (IN THE LOGBOOK). THEY TOOK IT OUT AGAIN, ISOLATING THE AIR CONDITIONING PACKS DURING THE ENG CHK. THE ODOR WAS FOUND AGAIN. THEY FOUND ROASTED BIRD PARTS IN PARTS OF THE PNEUMATIC SYS. MEANWHILE, THE RPTR HAD BEEN GIVEN ANOTHER ACFT AND, AFTER A 2 HR DELAY, THE FLT WAS ON ITS WAY AGAIN. HE SAID HE WASN'T ABOUT TO HAVE PAX ON A 'TEST FLT.' THAT ORIGINAL ACFT SUFFERED RETURNS IN THE NEXT 2 DAYS FOLLOWING THIS EVENT BECAUSE OF ACRID ODORS.

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.