Small Aircraft
Air Traffic Control Fully Certified
Air Traffic Control Radar 13; Air Traffic Control Time Certified In Pos 1 (yrs) 13
Communication Breakdown; Distraction; Workload
ATC Issue All Types; Deviation - Altitude Excursion From Assigned Altitude; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Inflight Event / Encounter CFTT / CFIT; Inflight Event / Encounter Weather / Turbulence
Air Traffic Control Issued Advisory / Alert
Human Factors; Weather; Staffing
Aircraft X was landing HHR on an IFR flight plan. There were multiple weather cells in the airspace and LAX Aircraft were deviating around the final to the north. I had DYNR/EAFR combined and was quite busy handling the coordination for the deviations with STAR/ZUMR and figuring out the sequence for dependent simultaneous ILS's. I advised Aircraft X of some weather; but did not issue a heavy precipitation on the route to HHR. I asked Aircraft X if they could advise HHR in sight because the HHR weather was reporting BKN045 and LAX Aircraft could not get the visual. We also did not have staffing available in the facility to open up parallel monitors for independent simultaneous approaches. Aircraft X responded HHR in sight and I cleared them for the visual approach. Traffic for LAX was increasing and frequency congestion was becoming a problem. Aircraft x did have delays with their read backs/understanding as well. Aircraft X went down to 1100 ft. in a 2000 ft. MVA and I issued a low altitude alert. Aircraft X responded with; 'correcting'. Then Aircraft X kept heading toward the LAX finals and I asked them once or twice if they still see HHR. Then the HHR weather deteriorated to IFR and I advised Aircraft X that they'd need the localizer approach. I told the CIC (Controller in Charge) to open up monitors; they were trying to find staffing at the time already. I then got Aircraft X above the MVA and vectored them for the approach while continuing to deal with LAX deviations. After clearing Aircraft X for the localizer runway 25; I switched them to HHR tower; monitors had opened at this time. Aircraft X then proceeded to do a left turn southbound on about a 7 mile final without notification to me from HHR tower. Monitor 1 then called HHR and asked what was going on. Aircraft X then checked back on frequency with me heading 160; no coordination. I climbed Aircraft X above the MVA and vectored them for another approach. I also asked the pilot if he could accept the approach and they agreed they could. I was then relieved.[We need] staffing. We have more than enough people on a shift to facilitate monitors being open. So many coworkers are worried about their long breaks and getting done early that we are leaving the operational floor short between shifts.
SCT Approach Controller reported inability to manage aircraft due to staffing issues.