Narrative:

I was working east radar; with all radar functions combined to east radar; and there was a controller in charge in the TRACON. Aircraft X was handed off to me from ZJX. The ZJX controller told me they wanted to work gamecock charlie; and rob roy moas. After initial call from aircraft X; I cleared them into gamecock charlie aob 10;000; and rob roy aob FL220. The pilot read back the clearance saying he was cleared into gamecock bravo & charlie moas. I corrected the pilot; reissuing the clearance into gamecock charlie and rob roy. This time the pilot read it back correctly.we assign aircraft to squawk XXXX while operating in our moas; (we are the controlling agency for gamecock charlie and rob roy). Approximately 10 minutes after being cleared into the moas; I noticed an aircraft squawking XXXX riding the eastern border of rob roy; and eventually turn left; exiting the airspace. I broadcast on the MOA frequency; 'aircraft X; check spill-out; east of rob roy.' this aircraft remained about 5 miles east (outside) of the rob roy MOA; for almost 10 miles of flight; before returning to the confines of rob roy. (This area east of rob roy; is part of gamecock bravo; which can only be activated with 30 days advance notice.) about a minute after I made the 'check spill-out' broadcast; a ZJX controller told me that aircraft X was outside of the MOA. ZJX had reason to be concerned; as a chs RNAV arrival route is just east of the rob roy MOA.1. We have a LOA with the air force base. This LOA defines the gamecock moas; (alpha; bravo; charlie; and delta; and rob roy airspace); and covers responsibility for controllers and pilots. The fighter wing consists of 3 squadrons. We have no issues with the fighter wing; as they have complete knowledge and understanding of these special use airspaces. We do; however; often have problems when other military flights come to use these moas. My guess is; over the last 10 years; we see them once every few months. And more often than not; they spill out of their assigned airspace.2. As I said earlier; this happens all too frequently with these flights. It is unsafe; and my wish is to prevent something tragic from occurring. Since the aircraft are not a signatory to our LOA; I suggest we not issue them clearance into the moas; until they are a signatory to our LOA. Then we could assume that their flight crews are properly briefed on the special use airspace(s).

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Original NASA ASRS Text

Title: MYR Approach Controller reports of a spill out close to an RNAV Arrival.

Narrative: I was working East Radar; with all Radar functions combined to East Radar; and there was a CIC in the TRACON. Aircraft X was handed off to me from ZJX. The ZJX Controller told me they wanted to work Gamecock Charlie; and Rob Roy MOAs. After initial call from Aircraft X; I cleared them into Gamecock Charlie AOB 10;000; and Rob Roy AOB FL220. The pilot read back the clearance saying he was cleared into Gamecock Bravo & Charlie MOAs. I corrected the pilot; reissuing the clearance into Gamecock Charlie and Rob Roy. This time the pilot read it back correctly.We assign aircraft to squawk XXXX while operating in our MOAs; (we are the controlling agency for Gamecock Charlie and Rob Roy). Approximately 10 minutes after being cleared into the MOAs; I noticed an aircraft squawking XXXX riding the eastern border of Rob Roy; and eventually turn left; exiting the airspace. I broadcast on the MOA frequency; 'Aircraft X; check spill-out; east of Rob Roy.' This aircraft remained about 5 miles east (outside) of the Rob Roy MOA; for almost 10 miles of flight; before returning to the confines of Rob Roy. (This area east of Rob Roy; is part of Gamecock Bravo; which can only be activated with 30 days advance notice.) About a minute after I made the 'Check spill-out' broadcast; a ZJX Controller told me that Aircraft X was outside of the MOA. ZJX had reason to be concerned; as a CHS RNAV Arrival route is just east of the Rob Roy MOA.1. We have a LOA with the Air Force Base. This LOA defines the Gamecock MOAs; (Alpha; Bravo; Charlie; and Delta; and Rob Roy airspace); and covers responsibility for controllers and pilots. The Fighter Wing consists of 3 squadrons. We have no issues with the Fighter Wing; as they have complete knowledge and understanding of these Special Use Airspaces. We do; however; often have problems when other military flights come to use these MOAs. My guess is; over the last 10 years; we see them once every few months. And more often than not; they spill out of their assigned airspace.2. As I said earlier; this happens all too frequently with these flights. It is unsafe; and my wish is to prevent something tragic from occurring. Since the aircraft are not a signatory to our LOA; I suggest we not issue them clearance into the MOAs; until they are a signatory to our LOA. Then we could assume that their flight crews are properly briefed on the Special Use Airspace(s).

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.