Narrative:

Aircraft X and aircraft Y were restricted area participants operating VFR see and avoid. They were issued a clearance allowing them to operate up to FL500 in the work area (atcaa) and only FL290 another work area (atcaa). Aircraft X and aircraft Y climbed above their clearance without authorization to FL294 when I attempted to tell them to descend immediately. They were on a mission frequency; so I un-keyed and enabled my communication on the mission frequency and told them to descend below FL290 immediately and they were only operating on a (specified) clearance and repeated 'descend immediately.' I transmitted this at FL298 and the aircraft did not respond. Aircraft Z was westbound from ZZZ intersection to YYY VORTAC at FL320. Aircraft X and aircraft Y reached FL304 before starting their descent over the course of 1-2 seconds. Aircraft Z reported TCAS RA climb and ascended above FL340. I said; 'roger' and then informed him of the traffic off his four o'clock position descending. I read aircraft X and aircraft Y flight the brasher notification. Aircraft Z returned to FL320.due to the climb performance of aircraft X and aircraft Y; I don't think the level of traffic or workload was too extreme as I caught the pilot deviation immediately. We are trained to watch closely as these type of aircraft get closer to their clearance limits for instances like this. I could have possibly reminded them they are only operating on a (specified) clearance; but seeing the aircraft X and Y above FL280 is a common occurrence. I believe in addition to instructing the aircraft X and Y aircraft to descend immediately; I should have also included a traffic alert for both the X and Y aircraft and aircraft Z.

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Original NASA ASRS Text

Title: E10 TRACON Controller stated two aircraft operating in a Restricted Area busted their altitude assignment causing a third aircraft to climb due to RA.

Narrative: Aircraft X and Aircraft Y were Restricted Area participants operating VFR see and avoid. They were issued a clearance allowing them to operate up to FL500 in the work area (ATCAA) and only FL290 another work area (ATCAA). Aircraft X and Aircraft Y climbed above their clearance without authorization to FL294 when I attempted to tell them to descend immediately. They were on a mission frequency; so I un-keyed and enabled my communication on the mission frequency and told them to descend below FL290 immediately and they were only operating on a (specified) clearance and repeated 'Descend Immediately.' I transmitted this at FL298 and the aircraft did not respond. Aircraft Z was westbound from ZZZ intersection to YYY VORTAC at FL320. Aircraft X and Aircraft Y reached FL304 before starting their descent over the course of 1-2 seconds. Aircraft Z reported TCAS RA climb and ascended above FL340. I said; 'Roger' and then informed him of the traffic off his four o'clock position descending. I read Aircraft X and Aircraft Y flight the brasher notification. Aircraft Z returned to FL320.Due to the climb performance of Aircraft X and Aircraft Y; I don't think the level of traffic or workload was too extreme as I caught the pilot deviation immediately. We are trained to watch closely as these type of aircraft get closer to their clearance limits for instances like this. I could have possibly reminded them they are only operating on a (specified) clearance; but seeing the Aircraft X and Y above FL280 is a common occurrence. I believe in addition to instructing the Aircraft X and Y aircraft to descend immediately; I should have also included a traffic alert for both the X and Y aircraft and Aircraft Z.

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.