Narita has a procedure for reporting Parts Departing Aircraft (PDA) reports.
"In order to secure the safety of aircraft operations and to rectify the issues of objects falling from aircraft operating in the vicinity of Narita Intl Airport, airline operators are required to notify the NAA Ramp Control Office of any "PARTS DEPARTING AIRCRAFT" from flights to/from Narita Intl Airport, without delay. This information will be shared by relevant parties in order to prevent recurrence of such."