Narrative:

After takeoff, notified by departure control that something had fallen from aircraft on takeoff. Further investigation confirmed, 3 rubber chocks had fallen from aircraft. I suspect they were left on the gear doors and when gear was raised, the chocks fell off the doors when they opened to receive the gear. As I personally did the walkaround, I can conceive of no other explanation.

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Original NASA ASRS Text

Title: B757 CREW HAD WHEEL CHOCKS FALL FROM THE ACFT ON DEP FROM RWY 25R IN LAX.

Narrative: AFTER TKOF, NOTIFIED BY DEP CTL THAT SOMETHING HAD FALLEN FROM ACFT ON TKOF. FURTHER INVESTIGATION CONFIRMED, 3 RUBBER CHOCKS HAD FALLEN FROM ACFT. I SUSPECT THEY WERE LEFT ON THE GEAR DOORS AND WHEN GEAR WAS RAISED, THE CHOCKS FELL OFF THE DOORS WHEN THEY OPENED TO RECEIVE THE GEAR. AS I PERSONALLY DID THE WALKAROUND, I CAN CONCEIVE OF NO OTHER EXPLANATION.

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.