Narrative:

During initial climb out from runway 4 at lga (right after gear retraction) we experienced a loud bang and a momentary yaw. Initial impression for both pilots was that something had hit the left side of the aircraft. Within seconds of the bang, the cockpit filled with smoke. We declared an emergency with new york departure control and requested vector to jfk for immediate landing. Flight attendants called and reported smoke in the cabin also. Source of smoke was not known at the time. Landed on runway 13R at jfk, stopped on runway and initiated evacuate/evacuation. Evacuate/evacuation proceeded smoothly with no injuries. Callback conversation with reporter revealed the following information: the first officer stated that the company later said it was the 6TH stage of the compressor that failed, blowing an oil seal that produced the smoke in the aircraft.

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Original NASA ASRS Text

Title: A B757-200 DIVERTS TO JFK AFTER LOSING AN ENG ON TKOF FROM LGA. SMOKE WAS IN THE COCKPIT AND CABIN. ACFT EVACED AT JFK.

Narrative: DURING INITIAL CLBOUT FROM RWY 4 AT LGA (RIGHT AFTER GEAR RETRACTION) WE EXPERIENCED A LOUD BANG AND A MOMENTARY YAW. INITIAL IMPRESSION FOR BOTH PLTS WAS THAT SOMETHING HAD HIT THE L SIDE OF THE ACFT. WITHIN SECONDS OF THE BANG, THE COCKPIT FILLED WITH SMOKE. WE DECLARED AN EMER WITH NEW YORK DEP CTL AND REQUESTED VECTOR TO JFK FOR IMMEDIATE LNDG. FLT ATTENDANTS CALLED AND RPTED SMOKE IN THE CABIN ALSO. SOURCE OF SMOKE WAS NOT KNOWN AT THE TIME. LANDED ON RWY 13R AT JFK, STOPPED ON RWY AND INITIATED EVAC. EVAC PROCEEDED SMOOTHLY WITH NO INJURIES. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE FO STATED THAT THE COMPANY LATER SAID IT WAS THE 6TH STAGE OF THE COMPRESSOR THAT FAILED, BLOWING AN OIL SEAL THAT PRODUCED THE SMOKE IN THE ACFT.

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.