INSTRUCTOR AND STUDENT PLT OF C150 RETURN TO 7S5 TO DISCOVER PLT CTLED RWY LIGHTS WILL NOT ACTIVATE. MAKE CAUTIOUS AND SAFE APCH AND LNDG.

Narrative

I WAS GIVING DUAL INSTRUCTION AT NIGHT WITH A STUDENT; WHO IS WORKING ON THEIR PVT PLT LICENSE. WE HAD DEPARTED AT DUSK; JUST PRIOR TO SUNSET; FROM 7S5 (INDEPENDENCE; OR). AT THE TIME OF DEP THE RWY LIGHTS WERE NOT ON AND WERE NOT REQUIRED TO BE SO. WE FLEW TO S12 (ALBANY; OR) AND DID SEVERAL NIGHT TKOFS AND LNDGS; COMPLETING THE NIGHT REQUIREMENT FOR THE STUDENT'S PPL NIGHT PRIVILEGES. ALBANY IS APPROX 20 NM FROM 7S5. WE COMPLETED OUR WORK AT APPROX XA30 HRS AND DEPARTED S12 FOR 7S5. THE FLT TOOK APPROX 15 MINS. UPON ARRIVING AT 7S5; I GAVE THE STUDENT INSTRUCTION ON HOW TO TURN ON THE RWY LIGHTS; WHICH ARE PLT CTLED. AFTER THE FIRST TRY; THE LIGHTS DIDN'T COME ON. I TRIED THEN; UNSUCCESSFULLY; TO GET THE LIGHTS TO COME UP. THEY WOULDN'T RESPOND. I TOOK CTL AND OVERFLEW THE ARPT AND TRIED WITH NO SUCCESS AGAIN TO GET THE LIGHTS TO COME ON. I OVERFLEW AGAIN; AND MADE THE DECISION TO LAND; AFTER I HAD REVIEWED THE ARPT ENVIRONMENT WITH A FLY-OVER. I ENTERED THE PATTERN FOR RWY 34; WITH A HIGHER ALT THAN NORMAL; TURNED DOWNWIND; BASE AND FINAL. THE ACFT LNDG LIGHT ILLUMINATED THE RWY 34 AND I MADE A NORMAL LNDG; TURNING OFF ON THE FIRST TXWY ABOUT 1500 FT FROM THE APCH END. THERE WAS NO PROB FINDING THE RWY; OR LNDG. AFTER SECURING THE ACFT; I PHONED MCMINNVILLE FSS TO RPT THE ARPT LIGHTING PROB. THEY HAD NOT RECEIVED ANY INFO CONCERNING 7S5; SO IT WAS TIMELY FOR THEM ALSO. I DECIDED TO FILE THIS RPT AS I AM UNAWARE OF ANY REGS THAT PERTAIN TO THIS SIT; BUT TO BE SAFE; I FELT IT WAS NECESSARY; AS THERE WAS NO INTENT ON MY PART TO VIOLATE ANY FAR'S. I DEBRIEFED WITH MY STUDENT ABOUT THE SIT; AND DISCUSSED SAFETY CONCERNS; AND OPTIONS. THE STUDENT FELT IT WAS A GOOD LESSON; AS THINGS DO NOT ALWAYS GO AS PLANNED.