The pilot of Delta flight 415 , which was headed to JFK International , reported to the control tower there was a mechanical problem with the Boeing jet and requested to return to the airport . El Pais flight 415 returned to New York shortly after takeoff ; no injuries reported . Airline says return was `` precautionary , '' while airport reports mechanical problem . Spanish newspaper Delta says problem was related to hydraulic system .
El Pais flight 415 returned to New York shortly after takeoff ; no injuries reported . Airline says return was `` precautionary , '' while airport reports mechanical problem . Spanish newspaper Delta says problem was related to hydraulic system .