Narrative:

WX: scattered clouds, 10 mi visibility. Captain was the PF for the leg. We had briefed the approach, had finished all descent checks, and the appropriate items of the before landing checklist. We had received several vectors/dscnts from phl approach and were about 10 mi to the southeast of the field, when given a heading 290 degrees and asked to report field in sight. In the turn, captain said he had field in sight, and we continued to assigned heading. Approach then cleared us for 'visual approach runway 27R, contact tower.' traffic ahead of us had also been cleared for visual approachs. After setting tower and ground frequencys, I saw full scale localizer deflection, and captain and I discussed that it appeared localizer was OTS. Navigation display showed aircraft on course and heading for runway 27R. I confirmed visual line-up by noting runway/approach lights for a runway straight ahead and another ahead and to the left (which I assumed was runway 27L. After landing, we realized that we had misidented runway 26 and runway 27R. Supplemental information from acn 506637: briefed approach before descent. Approach called field location and asked us to report in sight. Did not see any localizer guidance while maneuvering, clearing and changing radios. Localizer seemed to not be working.

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Original NASA ASRS Text

Title: ON A NIGHT OP, A B737 FLC LANDS ON THE WRONG RWY, A SHORTER THAN REQUIRED GA RWY AT PHL, PA.

Narrative: WX: SCATTERED CLOUDS, 10 MI VISIBILITY. CAPT WAS THE PF FOR THE LEG. WE HAD BRIEFED THE APCH, HAD FINISHED ALL DSCNT CHKS, AND THE APPROPRIATE ITEMS OF THE BEFORE LNDG CHKLIST. WE HAD RECEIVED SEVERAL VECTORS/DSCNTS FROM PHL APCH AND WERE ABOUT 10 MI TO THE SE OF THE FIELD, WHEN GIVEN A HDG 290 DEGS AND ASKED TO RPT FIELD IN SIGHT. IN THE TURN, CAPT SAID HE HAD FIELD IN SIGHT, AND WE CONTINUED TO ASSIGNED HDG. APCH THEN CLRED US FOR 'VISUAL APCH RWY 27R, CONTACT TWR.' TFC AHEAD OF US HAD ALSO BEEN CLRED FOR VISUAL APCHS. AFTER SETTING TWR AND GND FREQS, I SAW FULL SCALE LOC DEFLECTION, AND CAPT AND I DISCUSSED THAT IT APPEARED LOC WAS OTS. NAV DISPLAY SHOWED ACFT ON COURSE AND HDG FOR RWY 27R. I CONFIRMED VISUAL LINE-UP BY NOTING RWY/APCH LIGHTS FOR A RWY STRAIGHT AHEAD AND ANOTHER AHEAD AND TO THE L (WHICH I ASSUMED WAS RWY 27L. AFTER LNDG, WE REALIZED THAT WE HAD MISIDENTED RWY 26 AND RWY 27R. SUPPLEMENTAL INFO FROM ACN 506637: BRIEFED APCH BEFORE DSCNT. APCH CALLED FIELD LOCATION AND ASKED US TO RPT IN SIGHT. DID NOT SEE ANY LOC GUIDANCE WHILE MANEUVERING, CLRING AND CHANGING RADIOS. LOC SEEMED TO NOT BE WORKING.

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.