Narrative:

We departed ash late at PM30. I had been at work for an early AM00 flight so this was turning into a long day. The student had significant problems navigating and we wound up about 20 mi off course. It took him 1.6 hours to complete the flight from ash to baf, a trip that should have been done in 1 hour at the most. We were behind schedule and tired at this point. We stopped to use the restroom and while we were on the ground the tower closed for the night. I had been to baf before, but never had to taxi around the airport. I took out an airport diagram and gave the student taxi instructions to reach the active runway 20. This route took us onto taxiway G. As we traveled down the taxiway I noticed the A10's parked on the ramp and it occurred to me that we may not be allowed in the area we were in. I verbalized this to the student who said to me that 'tower G is closed.' I knew he meant taxiway, so I stopped the aircraft and asked him to show me. I then saw in the AFD under airport remarks where it said 'taxiway G closed to civilian operations.' I looked around and noticed 2 vehicles moving in our general direction. They did not appear to be coming at great speed and there were no flashing lights, so I turned the aircraft around and left the area the way we had come. We departed baf without further incident. Fatigue was definitely a contributing factor to this incident. I did not look in the AFD and the plate I was using had the restr written on it, but in the poorly lit C152 cockpit I failed to notice it. I did not notice any markings on the airport about the restr. I have seen a red line on the airport surface at other airports and I know you are not supposed to cross it. I did not see anything like that at baf. It may have been there, but I did not see it in the dark. While I certainly recognize that I should have seen the notes on my plate saying I wasn't supposed to be there, clrer airport markings would also make these areas easier to avoid.

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Original NASA ASRS Text

Title: A C152 CFI AND STUDENT FIND THEMSELVES ON 'MIL ONLY' TXWY DURING A NIGHT OP AT BAF, MA.

Narrative: WE DEPARTED ASH LATE AT PM30. I HAD BEEN AT WORK FOR AN EARLY AM00 FLT SO THIS WAS TURNING INTO A LONG DAY. THE STUDENT HAD SIGNIFICANT PROBS NAVING AND WE WOUND UP ABOUT 20 MI OFF COURSE. IT TOOK HIM 1.6 HRS TO COMPLETE THE FLT FROM ASH TO BAF, A TRIP THAT SHOULD HAVE BEEN DONE IN 1 HR AT THE MOST. WE WERE BEHIND SCHEDULE AND TIRED AT THIS POINT. WE STOPPED TO USE THE RESTROOM AND WHILE WE WERE ON THE GND THE TWR CLOSED FOR THE NIGHT. I HAD BEEN TO BAF BEFORE, BUT NEVER HAD TO TAXI AROUND THE ARPT. I TOOK OUT AN ARPT DIAGRAM AND GAVE THE STUDENT TAXI INSTRUCTIONS TO REACH THE ACTIVE RWY 20. THIS RTE TOOK US ONTO TXWY G. AS WE TRAVELED DOWN THE TXWY I NOTICED THE A10'S PARKED ON THE RAMP AND IT OCCURRED TO ME THAT WE MAY NOT BE ALLOWED IN THE AREA WE WERE IN. I VERBALIZED THIS TO THE STUDENT WHO SAID TO ME THAT 'TWR G IS CLOSED.' I KNEW HE MEANT TXWY, SO I STOPPED THE ACFT AND ASKED HIM TO SHOW ME. I THEN SAW IN THE AFD UNDER ARPT REMARKS WHERE IT SAID 'TXWY G CLOSED TO CIVILIAN OPS.' I LOOKED AROUND AND NOTICED 2 VEHICLES MOVING IN OUR GENERAL DIRECTION. THEY DID NOT APPEAR TO BE COMING AT GREAT SPD AND THERE WERE NO FLASHING LIGHTS, SO I TURNED THE ACFT AROUND AND LEFT THE AREA THE WAY WE HAD COME. WE DEPARTED BAF WITHOUT FURTHER INCIDENT. FATIGUE WAS DEFINITELY A CONTRIBUTING FACTOR TO THIS INCIDENT. I DID NOT LOOK IN THE AFD AND THE PLATE I WAS USING HAD THE RESTR WRITTEN ON IT, BUT IN THE POORLY LIT C152 COCKPIT I FAILED TO NOTICE IT. I DID NOT NOTICE ANY MARKINGS ON THE ARPT ABOUT THE RESTR. I HAVE SEEN A RED LINE ON THE ARPT SURFACE AT OTHER ARPTS AND I KNOW YOU ARE NOT SUPPOSED TO CROSS IT. I DID NOT SEE ANYTHING LIKE THAT AT BAF. IT MAY HAVE BEEN THERE, BUT I DID NOT SEE IT IN THE DARK. WHILE I CERTAINLY RECOGNIZE THAT I SHOULD HAVE SEEN THE NOTES ON MY PLATE SAYING I WASN'T SUPPOSED TO BE THERE, CLRER ARPT MARKINGS WOULD ALSO MAKE THESE AREAS EASIER TO AVOID.

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.