A B727 MAKES A NIGHT VISUAL APCH TO THE WRONG ARPT NEAR TUS; AZ.

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ON A CLR NIGHT APCH INTO TUS ARPT (FROM DENVER); WE WERE GIVEN CLRNC FOR A VISUAL TO RWY 29R. AS PF; I'D BRIEFED THE VISUAL TO RWY 29R BACKED UP BY THE LOC DME (BACK COURSE) RWY 29R APCH. I HAD THE LOC FREQ DIALED IN; AS WELL AS THE FRONT COURSE ON THE HSI. COMING OVER THE LAST FEW HILLS (FROM THE E); ABOUT 18 MI FROM THE ARPT; I STARTED ASKING THE OTHER CREW MEMBERS IF THEY SAW THE ARPT. THE CAPT SAID HE DID. I DID NOT; EVEN THOUGH I KEPT QUERYING HIM 'WHERE IS IT?' I KEPT TO A 3:1 GS BASED ON THE DME; AND BEGAN CONFIGURING THE ACFT BASED ON DISTANCE/ALT. THE CAPT ACCEPTED A VISUAL APCH EVEN THOUGH I'D SAID I DIDN'T SEE THE RWY OR ARPT; YET. HE SAID 'YOU'RE LOOKING GOOD' AND POINTED OUT A RWY AT MY 10 O'CLOCK. IT WAS NOT IN THE LOCATION I'D THOUGHT IT WOULD BE; BUT I LOOKED AT THE LOC GUIDANCE AND IT BEGAN TO CTR; SO I TURNED TO INTERCEPT FINAL. THE VASI WAS NOT THE LIGHTING I'D REMEMBERED; NOR WERE THE APCH LIGHTS OR RWY LIGHTS. AND NORMALLY; RWY 29L IS ALSO ILLUMINATED (IT WAS NOT). 'SOMETHING ISN'T RIGHT' WAS SAID AT THE SAME TIME THE CAPT ASKED 'IS YOUR LOC CTRED?' IT WAS SWINGING L TO R AND I SAID 'NO.' 'THIS ISN'T RIGHT.' I SAID ONE FINAL TIME BEFORE I SAID 'I'M GOING AROUND.' WE WERE AT ABOUT 2000 FT AGL. I INITIATED A GAR AND THE CAPT MADE A VHF XMISSION TO THAT EFFECT WHEN THE SO AND I HEARD TWR (WE BELIEVED IT WAS ON VHF) SAY; 'IT'S STRAIGHT AHEAD.' I WAVERED; MENTALLY; FOR A MOMENT ON MY GAR DECISION; BUT CONTINUED. THEN THE CAPT SPOTTED THE REAL RWY 29 AT OUR 9 O'CLOCK POS. HE SAID I COULD JUST ENTER A R DOWNWIND (TWR OK'D THIS) AND I DID. AN UNEVENTFUL LNDG FOLLOWED. WE'D MADE A NICE VISUAL APCH TO DAVIS-MONTHAN AFB! WE SELF-CRITIQUED AFTERWARDS AND THE CAPT GRACIOUSLY TOOK THE BLAME FOR FIXATING ON THE WRONG ARPT. BUT; THE SO HAD AGREED WITH HIM; SO THE SAVING GRACE WAS LIGHTING DIFFERENCES AND NAVAID BACKUP. BARELY! A REAL HUMBLING EXPERIENCE. (NEVER ACCEPT A VISUAL APCH IF: AS THE PF YOU DON'T SEE IT! AND; IF THERE'S AN ADJACENT ARPT WITH SIMILAR RWYS!) I ALSO; LEARNED THAT; DESPITE KNOWING THE AFB WAS THERE; NO ONE THOUGHT TO CHK OUT THE GREEN/WHITE/WHITE TWR LIGHT.