Narrative:

We were approaching enid, ok, from ponca city, ok, on a normal route at 6000 ft in VMC. ZKC advised us to descend to 3400 ft MSL and report wdg (enid, ok) in sight, and to expect the visual. After I received the current WX from our company, with first officer flying the leg from pnc to wdg, we commenced our descent and our descent/approach checklists. ZKC advised us that the airport (wdg) was at our 12 O'clock and 8 mi. With the setting sun and haze the airport was not visible. I advised ZKC that we would probably pick up the woodring airport in the next couple of mi. Within approximately 5 NM, we advised ZKC of the airport in sight. ZKC cleared us for the visual approach and change to advisory frequency was approved and report cancellation in the air or on the ground. The first officer and I agreed we had the airport in sight and we could cancel. ZKC acknowledged our cancellation and we changed to 118.1. We broadcasted our intentions and no traffic was observed in the area. After a normal landing was made and a shutdown checklist was run, the first officer and I realized that wdg tower was open and that we had used the wrong frequency 118.1 as opposed to 118.9 the correct frequency. No separation conflicts were advised by wdg tower upon our flight termination. Cause: 1) crew using the incorrect frequency 118.1 for 118.9. 2) ZKC's phraseology with respect to clearing our flight for the visual approach and not stating to contact the tower. When we changed to 118.1 and broadcasted in the blind, we were not surprised not to hear wdg tower. 3) the flight's late departure from dfw, crew's reassignment to the flight, and 7 1/2 hour flight day, 10+ hour duty day, and 6TH leg. Corrective action: ZKC and inbound aircraft on IFR plans need more coordination during visual and approachs. Visual approachs are IFR clrncs and there needs to be more coordination between aircraft, ZKC, and wdg tower.

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Original NASA ASRS Text

Title: ACR CREW, ASSUMING TWR IS CLOSED, LANDS AT WDG WITHOUT CLRNC.

Narrative: WE WERE APCHING ENID, OK, FROM PONCA CITY, OK, ON A NORMAL RTE AT 6000 FT IN VMC. ZKC ADVISED US TO DSND TO 3400 FT MSL AND RPT WDG (ENID, OK) IN SIGHT, AND TO EXPECT THE VISUAL. AFTER I RECEIVED THE CURRENT WX FROM OUR COMPANY, WITH FO FLYING THE LEG FROM PNC TO WDG, WE COMMENCED OUR DSCNT AND OUR DSCNT/APCH CHKLISTS. ZKC ADVISED US THAT THE ARPT (WDG) WAS AT OUR 12 O'CLOCK AND 8 MI. WITH THE SETTING SUN AND HAZE THE ARPT WAS NOT VISIBLE. I ADVISED ZKC THAT WE WOULD PROBABLY PICK UP THE WOODRING ARPT IN THE NEXT COUPLE OF MI. WITHIN APPROX 5 NM, WE ADVISED ZKC OF THE ARPT IN SIGHT. ZKC CLRED US FOR THE VISUAL APCH AND CHANGE TO ADVISORY FREQ WAS APPROVED AND RPT CANCELLATION IN THE AIR OR ON THE GND. THE FO AND I AGREED WE HAD THE ARPT IN SIGHT AND WE COULD CANCEL. ZKC ACKNOWLEDGED OUR CANCELLATION AND WE CHANGED TO 118.1. WE BROADCASTED OUR INTENTIONS AND NO TFC WAS OBSERVED IN THE AREA. AFTER A NORMAL LNDG WAS MADE AND A SHUTDOWN CHKLIST WAS RUN, THE FO AND I REALIZED THAT WDG TWR WAS OPEN AND THAT WE HAD USED THE WRONG FREQ 118.1 AS OPPOSED TO 118.9 THE CORRECT FREQ. NO SEPARATION CONFLICTS WERE ADVISED BY WDG TWR UPON OUR FLT TERMINATION. CAUSE: 1) CREW USING THE INCORRECT FREQ 118.1 FOR 118.9. 2) ZKC'S PHRASEOLOGY WITH RESPECT TO CLRING OUR FLT FOR THE VISUAL APCH AND NOT STATING TO CONTACT THE TWR. WHEN WE CHANGED TO 118.1 AND BROADCASTED IN THE BLIND, WE WERE NOT SURPRISED NOT TO HEAR WDG TWR. 3) THE FLT'S LATE DEP FROM DFW, CREW'S REASSIGNMENT TO THE FLT, AND 7 1/2 HR FLT DAY, 10+ HR DUTY DAY, AND 6TH LEG. CORRECTIVE ACTION: ZKC AND INBOUND ACFT ON IFR PLANS NEED MORE COORD DURING VISUAL AND APCHS. VISUAL APCHS ARE IFR CLRNCS AND THERE NEEDS TO BE MORE COORD BTWN ACFT, ZKC, AND WDG TWR.

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.