Narrative:

Restricted area was active 28;000 feet and below. Aircraft X was in sector 37 and he had not checked on yet. As I saw his altitude descending; since he hadn't checked on yet; I asked sector 37 why aircraft was descending; and did he still have aircraft? Sector 37 had already shipped him; so I checked to see if he was on my frequency; and told aircraft to climb and maintain 29;000 feet for restricted airspace. He responded; and then I asked him what his previous clearance was. He stated it was 'to cross salyy at FL290; then descend via the anjll 1 arrival.' he stated his FMS did not work properly. This seems to be an ongoing FMS issue with pilots on the descent via on the ANJll1. They are not following our instructions to keep them clear of military airspace because of their FMS issue. They even have trouble checking on with the verbiage to cross salyy at FL290 then descend via. This is very dangerous and it is a problem that needs to be fixed.I would recommend for this restriction to cross salyy at or above FL290 be on the STAR and have sector 37 have them maintain the top of the restricted airspace which today would be FL290. Then once they pass restricted airspace; give the aircraft the 'descend via'. It is better for the pilots and the controllers to not have to repeat the salyy restriction to them a million times because it is time consuming. You can get extremely busy with all the repetition; and is obviously a pilot FMS issue as well. It needs to be fixed as soon as possible before another incident occurs. It happened yesterday as well with another controller and pilot.

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Original NASA ASRS Text

Title: A center controller and flight crew reported an aircraft did not comply with a crossing restriction and descended into restricted airspace.

Narrative: Restricted area was active 28;000 feet and below. Aircraft X was in Sector 37 and he had not checked on yet. As I saw his altitude descending; since he hadn't checked on yet; I asked Sector 37 why aircraft was descending; and did he still have aircraft? Sector 37 had already shipped him; so I checked to see if he was on my frequency; and told aircraft to climb and maintain 29;000 feet for restricted airspace. He responded; and then I asked him what his previous clearance was. He stated it was 'to cross SALYY at FL290; then descend via the ANJLL 1 arrival.' He stated his FMS did not work properly. This seems to be an ongoing FMS issue with pilots on the descent via on the ANJll1. They are not following our instructions to keep them clear of military airspace because of their FMS issue. They even have trouble checking on with the verbiage to cross SALYY at FL290 then descend via. This is very dangerous and it is a problem that needs to be fixed.I would recommend for this restriction to cross SALYY at or above FL290 be on the STAR and have Sector 37 have them maintain the top of the restricted airspace which today would be FL290. Then once they pass restricted airspace; give the aircraft the 'descend via'. It is better for the pilots and the controllers to not have to repeat the SALYY restriction to them a million times because it is time consuming. You can get extremely busy with all the repetition; and is obviously a pilot FMS issue as well. It needs to be fixed ASAP before another incident occurs. It happened yesterday as well with another controller and pilot.

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.