Narrative:

Aircraft X was on a sct north sector data block and was on a visual approach while aircraft Y was on sct east sector data block on an RNAV approach; sct did not coordinate with myf tower to provide visual separation with these two aircraft. I was training a student on local. We were already in communication with aircraft Y when aircraft X checked in; and I asked our local assist if sct had coordinated with us to provide visual separation. Local assist responded negative. I immediately notified the os [operational supervisor] of the situation and told him there was going to be a loss [loss of standard separation] very soon. Aircraft X made it to the runway 28R final approach course about 1 mile in front of aircraft Y at approximately same altitude. After prb [position relief briefing]; I asked the os [operational supervisor] if he had the info he needed for the report. He seemed reluctant to file a report; and I was interviewed by the atm [air traffic manager] shortly after. The atm [air traffic manager] stated that since I had observed the aircraft [and] was providing visual separation; no loss had occurred. I disagree with this assessment since it is sct's job to provide separation between IFR aircraft and they did not properly apply visual separation. The myf atm [air traffic manager] directed the os not to file a report.north and east sectors need to improve their required coordination.

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Original NASA ASRS Text

Title: MYF Tower Controller reported an unsafe operation by the overlying TRACON not asking Tower to provide visual separation.

Narrative: Aircraft X was on a SCT North Sector data block and was on a visual approach while Aircraft Y was on SCT East Sector data block on an RNAV approach; SCT did not coordinate with MYF Tower to provide visual separation with these two aircraft. I was training a student on Local. We were already in communication with Aircraft Y when Aircraft X checked in; and I asked our Local Assist if SCT had coordinated with us to provide visual separation. Local Assist responded negative. I immediately notified the OS [Operational Supervisor] of the situation and told him there was going to be a LoSS [Loss of Standard Separation] very soon. Aircraft X made it to the Runway 28R final approach course about 1 mile in front of Aircraft Y at approximately same altitude. After PRB [Position Relief Briefing]; I asked the OS [Operational Supervisor] if he had the info he needed for the report. He seemed reluctant to file a report; and I was interviewed by the ATM [Air Traffic Manager] shortly after. The ATM [Air Traffic Manager] stated that since I had observed the aircraft [and] was providing visual separation; no loss had occurred. I disagree with this assessment since it is SCT's job to provide separation between IFR aircraft and they did not properly apply visual separation. The MYF ATM [Air Traffic Manager] directed the OS not to file a report.North and East sectors need to improve their required coordination.

Data retrieved from NASA's ASRS site 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.