Commercial Fixed Wing
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 1
Situational Awareness; Time Pressure; Confusion
ATC Issue All Types; Airspace Violation All Types; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Issued New Clearance; Flight Crew Exited Penetrated Airspace
Airspace Structure; Chart Or Publication; Human Factors; Procedure
I observed an aircraft within the confines of Restricted Airspace R2501. The airspace was hot up to 28;000 feet. I gave the pilot a descent to 29;000 feet which he read back as confirmed by falcon replay. I then noticed the pilot had busted his altitude descent restriction. I noticed at around 25;200 feet and gave him an immediate climb to 29;000 feet to remove himself from the airspace before I made any more inquiries. I attempted to call the BEARMAT (R2501 controlling facility) however they observed the beacon code and called me. I informed them that the pilot deviated and is removing himself immediately. They informed me there was 'nothing going on in there'. After the pilot reached 29;000 feet I asked what his clearance was according to him. He stated descend via the ANJLL Arrival now to 29;000 feet then descend via or something to the likes of this. The pilot was given the brasher phone number so we could figure it out via the front desk and falcon replay.  If the arrival into Los Angeles had a restriction at SALYY like the east arrival does these events would be significantly less than they currently are. It is not relevant to this event but I have been on a D Side calling BEARMAT when an aircraft went within the confines; and on that phone call I was told; 'Well they are shooting missiles off in there so.' The airspace dilemma that stands with R2501 already is no excuse for there not to be a restriction for the moments at least the airspace is released at FL290.
A Center Controller reported an aircraft descended below its assigned altitude and into a Restricted Area. The reporter has witnessed this occurring at other times and suggested a fix with an altitude restriction above the Restricted Airspace as is done on other routes.