American B738 at Boston on May 18th 2014, smoked bread crumbs

An American Airlines Boeing 737-800, registration N840NN performing flight AA-1532 from Boston,MA to Miami,FL (USA) with 160 people on board, was climbing out of Boston when passengers noticed a smell of smoke prompting the crew to return to Boston for a safe landing about 25 minutes after departure.

The aircraft was able to depart again about 80 minutes after landing and reached Miami with a delay of 75 minutes.

The airline reported the source of the smell was identified to be bread crumbs in a galley oven. The oven was cleaned and the aircraft departed again.