A LATAM Boeing 787-8, registration CC-BBI performing flight LA-603 from Los Angeles,CA (USA) to Santiago de Chile (Chile), was climbing out of Los Angeles’ runway 25R when ATC cleared the crew to climb to FL230 and maintain 280 KIAS or greater. The crew requested to level off at FL230 confirming this would be their final level. ATC queried whether everything was okay, the crew hesitated a moment then said yes. The crew subsequently requested to lower their speed to 250 KIAS. Upon second query by the controller the crew stated: “we have Romea Alpha Tango allotted” (we have the RAT deployed). Upon further query by ATC whether they wanted to return the crew indicated a return to Los Angeles. The aircraft dumped fuel and returned to Los Angeles for an ILS approach to and safe landing on runway 25L about 75 minutes after departure. After landing the crew advised they did not need any assistance and wanted to taxi to their gate.

Passengers reported the engines were fine, but the RAT was super loud. The crew announced “eletronics problems”.

The aircraft remained on the ground for about 22.5 hours, then performed the next day’s flight LA-603.

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