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Bmb was inadvertently given a descent to an altitude into a restricted area. The problem was compounded when the bmb descended below the assigned altitude.
| Attributes | |
| ACN | 116532 |
| Time | |
| Date | 198907 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : gyg |
| State Reference | MI |
| Altitude | msl bound lower : 16500 msl bound upper : 23000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zmp |
| Operator | other |
| Make Model Name | Military Transport |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller non radar : 5 controller radar : 4 flight time last 90 days : 300 flight time total : 1500 |
| ASRS Report | 116532 |
| Person 2 | |
| Affiliation | government : military |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : military |
| Events | |
| Anomaly | non adherence : published procedure non adherence : clearance other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Pilot Deviation Operational Deviation |
Narrative:
Bmb X was descending into osc AFB requesting en route descent to 13,000'. I advised him I would need to hold him up to clear active military airspace (R4201). I stood up and checked the sheets on military airspace to confirm it was active, but in error, checked R6904 which was active at and below 17,000'. I cleared bmb X to maintain FL180, when in reality R4201 was hot at and below FL230. As bmb X entered R4201 he continued his descent thru FL180. I noticed his altitude as he came thru approximately 17,000', and I instructed him to turn to heading 180 degree and climb back to FL180. I notified the supervisor that I had a pilot deviation and I realized at the same time that I was using the wrong altitude for R4201.
Original NASA ASRS Text
Title: BMB WAS INADVERTENTLY GIVEN A DESCENT TO AN ALT INTO A RESTRICTED AREA. THE PROBLEM WAS COMPOUNDED WHEN THE BMB DESCENDED BELOW THE ASSIGNED ALT.
Narrative: BMB X WAS DESCENDING INTO OSC AFB REQUESTING ENRTE DSCNT TO 13,000'. I ADVISED HIM I WOULD NEED TO HOLD HIM UP TO CLEAR ACTIVE MIL AIRSPACE (R4201). I STOOD UP AND CHECKED THE SHEETS ON MIL AIRSPACE TO CONFIRM IT WAS ACTIVE, BUT IN ERROR, CHECKED R6904 WHICH WAS ACTIVE AT AND BELOW 17,000'. I CLRED BMB X TO MAINTAIN FL180, WHEN IN REALITY R4201 WAS HOT AT AND BELOW FL230. AS BMB X ENTERED R4201 HE CONTINUED HIS DSCNT THRU FL180. I NOTICED HIS ALT AS HE CAME THRU APPROX 17,000', AND I INSTRUCTED HIM TO TURN TO HDG 180 DEG AND CLIMB BACK TO FL180. I NOTIFIED THE SUPVR THAT I HAD A PLT DEVIATION AND I REALIZED AT THE SAME TIME THAT I WAS USING THE WRONG ALT FOR R4201.
Data retrieved from NASA's ASRS site as of August 2007 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.