Narrative:

I am writing this report to inform you of a situation I became aware of after the completion of a military sortie which originated and terminated at NAS dallas on jul/93. Upon our return to the squadron I was told by a squadron mate that an official at ZFW had telephoned the squadron. An air carrier flight, a commuter, saw an fgt pass by them inverted at a distance of 200 ft. I was also told the event took place approximately 20 mi south of the scurry VOR and that air carrier had informed ZFW. Finally, I was told that ZFW was not overly concerned with the report by air carrier, was not going to initiate formal procedures unless air carrier filed a near midair collision report, and the phone call was to inform the squadron. To the best of my knowledge, the sortie had been accomplished without incident plus we were never told about any conflicting traffic nor did we see any aircraft of any kind on our initial IFR leg. As of this writing, I do not even know if an official report was ever filed by air carrier. However, once I was told of the event, I felt I should file this report. We departed on an IFR/VFR/IFR flight plan from NAS dallas to vr-188 low level navigation route and return. The stereo route clearance was a troubl 1, vr-188, troubl 1R, 15000 ft MSL was the filed altitude. After takeoff we navigated to rainy intersection (SCY215025) then to the scy 119021 which was the beginning point of our low level. Approximately 5 NM east of rainy intersection ZFW (287.9) asked us a series of questions in rapid succession. Center had some confusion on our routing, asked us when we wanted to proceed VFR and if we wanted TA's. Because of the speed and intensity of his questioning we knew he was extremely busy. While still at cruise altitude center never advised us of any traffic leading us to believe that there was no imminent conflicts between our position and the starting point of our low level. Having the routing and descent questions cleared up we proceeded directly to point 'a' which was visible to us (10-12 NM visibility). He then cleared us to descend VFR and off of center frequency and made no mention of any imminent traffic conflicts in our vicinity. We declined his offer for TA's due to the superior VFR conditions and his intense workload. We began our descent but never left his frequency and as always, continually monitored guard. At 10000 ft MSL I began to reduce the airspeed from 325 KIAS to 250 KIAS, using the spdbrake. At 10000 ft MSL, less then 3 mins after being cleared for the descent, I rolled inverted momentarily to clear the airspace below me of traffic. We saw no one and continued our descent at 250 KIAS to point 'a.' I also performed some clearing turns during the remainder of the descent . At no time did we ever see any other aircraft nor were we inverted at any other time in the flight. Since I am not certain of the orientation of the air carrier aircraft, I cannot begin to assume at what point he saw us or if his distances are accurate. As I mentioned earlier, we were inverted only momentarily while at 10000 ft MSL.

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Original NASA ASRS Text

Title: FGT GOES INVERTED AND HAS NMAC WITH ACR COMMUTER.

Narrative: I AM WRITING THIS RPT TO INFORM YOU OF A SIT I BECAME AWARE OF AFTER THE COMPLETION OF A MIL SORTIE WHICH ORIGINATED AND TERMINATED AT NAS DALLAS ON JUL/93. UPON OUR RETURN TO THE SQUADRON I WAS TOLD BY A SQUADRON MATE THAT AN OFFICIAL AT ZFW HAD TELEPHONED THE SQUADRON. AN ACR FLT, A COMMUTER, SAW AN FGT PASS BY THEM INVERTED AT A DISTANCE OF 200 FT. I WAS ALSO TOLD THE EVENT TOOK PLACE APPROX 20 MI S OF THE SCURRY VOR AND THAT ACR HAD INFORMED ZFW. FINALLY, I WAS TOLD THAT ZFW WAS NOT OVERLY CONCERNED WITH THE RPT BY ACR, WAS NOT GOING TO INITIATE FORMAL PROCS UNLESS ACR FILED A NMAC RPT, AND THE PHONE CALL WAS TO INFORM THE SQUADRON. TO THE BEST OF MY KNOWLEDGE, THE SORTIE HAD BEEN ACCOMPLISHED WITHOUT INCIDENT PLUS WE WERE NEVER TOLD ABOUT ANY CONFLICTING TFC NOR DID WE SEE ANY ACFT OF ANY KIND ON OUR INITIAL IFR LEG. AS OF THIS WRITING, I DO NOT EVEN KNOW IF AN OFFICIAL RPT WAS EVER FILED BY ACR. HOWEVER, ONCE I WAS TOLD OF THE EVENT, I FELT I SHOULD FILE THIS RPT. WE DEPARTED ON AN IFR/VFR/IFR FLT PLAN FROM NAS DALLAS TO VR-188 LOW LEVEL NAV RTE AND RETURN. THE STEREO RTE CLRNC WAS A TROUBL 1, VR-188, TROUBL 1R, 15000 FT MSL WAS THE FILED ALT. AFTER TKOF WE NAVIGATED TO RAINY INTXN (SCY215025) THEN TO THE SCY 119021 WHICH WAS THE BEGINNING POINT OF OUR LOW LEVEL. APPROX 5 NM E OF RAINY INTXN ZFW (287.9) ASKED US A SERIES OF QUESTIONS IN RAPID SUCCESSION. CTR HAD SOME CONFUSION ON OUR ROUTING, ASKED US WHEN WE WANTED TO PROCEED VFR AND IF WE WANTED TA'S. BECAUSE OF THE SPD AND INTENSITY OF HIS QUESTIONING WE KNEW HE WAS EXTREMELY BUSY. WHILE STILL AT CRUISE ALT CTR NEVER ADVISED US OF ANY TFC LEADING US TO BELIEVE THAT THERE WAS NO IMMINENT CONFLICTS BTWN OUR POS AND THE STARTING POINT OF OUR LOW LEVEL. HAVING THE ROUTING AND DSCNT QUESTIONS CLRED UP WE PROCEEDED DIRECTLY TO POINT 'A' WHICH WAS VISIBLE TO US (10-12 NM VISIBILITY). HE THEN CLRED US TO DSND VFR AND OFF OF CTR FREQ AND MADE NO MENTION OF ANY IMMINENT TFC CONFLICTS IN OUR VICINITY. WE DECLINED HIS OFFER FOR TA'S DUE TO THE SUPERIOR VFR CONDITIONS AND HIS INTENSE WORKLOAD. WE BEGAN OUR DSCNT BUT NEVER LEFT HIS FREQ AND AS ALWAYS, CONTINUALLY MONITORED GUARD. AT 10000 FT MSL I BEGAN TO REDUCE THE AIRSPD FROM 325 KIAS TO 250 KIAS, USING THE SPDBRAKE. AT 10000 FT MSL, LESS THEN 3 MINS AFTER BEING CLRED FOR THE DSCNT, I ROLLED INVERTED MOMENTARILY TO CLR THE AIRSPACE BELOW ME OF TFC. WE SAW NO ONE AND CONTINUED OUR DSCNT AT 250 KIAS TO POINT 'A.' I ALSO PERFORMED SOME CLRING TURNS DURING THE REMAINDER OF THE DSCNT . AT NO TIME DID WE EVER SEE ANY OTHER ACFT NOR WERE WE INVERTED AT ANY OTHER TIME IN THE FLT. SINCE I AM NOT CERTAIN OF THE ORIENTATION OF THE ACR ACFT, I CANNOT BEGIN TO ASSUME AT WHAT POINT HE SAW US OR IF HIS DISTANCES ARE ACCURATE. AS I MENTIONED EARLIER, WE WERE INVERTED ONLY MOMENTARILY WHILE AT 10000 FT MSL.

Data retrieved from NASA's ASRS site as of July 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.