Narrative:

We were cleared by approach control to descend to 3000' and intercept the 13R ILS. Clearance was also given to contact tower. The frequency tuned into the VHF communication was 127.75. The approach was continued and the crew attempted to contact tower for landing clearance. When radio contact could not be established on 127.75, the frequency for west tower on approach plate 61-7, 124.15 was dialed into the VHF communication. Several attempts were made to contact tower, but due to extreme congestion on this frequency no landing clearance was obtained. The decision was made by the crew to continue the approach down to 200' and if landing clearance was not received by this time, that a missed approach would be initiated. Additionally, the nose wheel landing light was flashed several times in an attempt to get tower's attention. The crew started a go around and made the call on 124.15. At this time the crew was informed that we had been cleared to land on frequency 124.75. Missed approach instructions were issued and a non-eventful missed approach and VFR pattern and landing were completed. Contributing factors: 1) frequency 127.75 in a departure frequency at dfw and this frequency could have been transmitted or received in error. 2) frequency 124.75 is not listed on approach plate 61-8 as an alternate tower frequency. 3) ATIS did not carry any NOTAM about a change of tower frequency for runway 13R. 4) frequency 124.15 was so congested that no aircraft could transmit on this frequency. The only xmissions were directions from tower and acknowledgements by aircraft. Corrective actions: print 124.75 as an alternate frequency for runway 13L. NOTAM frequency 124.75 as an alternate frequency on ATIS decrease congestion of tower frequency.

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Original NASA ASRS Text

Title: FLT CREW OF MLG CLEARED RWY 13R AT DFW AND CLEARED TO TWR. UNABLE TO CONTACT TWR. DID MISSED APCH AND THEN WAS ABLE TO CONTACT TWR ON ANOTHER FREQ FOR NORMAL APCH AND LNDG.

Narrative: WE WERE CLRED BY APCH CTL TO DSND TO 3000' AND INTERCEPT THE 13R ILS. CLRNC WAS ALSO GIVEN TO CONTACT TWR. THE FREQ TUNED INTO THE VHF COM WAS 127.75. THE APCH WAS CONTINUED AND THE CREW ATTEMPTED TO CONTACT TWR FOR LNDG CLRNC. WHEN RADIO CONTACT COULD NOT BE ESTABLISHED ON 127.75, THE FREQ FOR W TWR ON APCH PLATE 61-7, 124.15 WAS DIALED INTO THE VHF COM. SEVERAL ATTEMPTS WERE MADE TO CONTACT TWR, BUT DUE TO EXTREME CONGESTION ON THIS FREQ NO LNDG CLRNC WAS OBTAINED. THE DECISION WAS MADE BY THE CREW TO CONTINUE THE APCH DOWN TO 200' AND IF LNDG CLRNC WAS NOT RECEIVED BY THIS TIME, THAT A MISSED APCH WOULD BE INITIATED. ADDITIONALLY, THE NOSE WHEEL LNDG LIGHT WAS FLASHED SEVERAL TIMES IN AN ATTEMPT TO GET TWR'S ATTN. THE CREW STARTED A GAR AND MADE THE CALL ON 124.15. AT THIS TIME THE CREW WAS INFORMED THAT WE HAD BEEN CLRED TO LAND ON FREQ 124.75. MISSED APCH INSTRUCTIONS WERE ISSUED AND A NON-EVENTFUL MISSED APCH AND VFR PATTERN AND LNDG WERE COMPLETED. CONTRIBUTING FACTORS: 1) FREQ 127.75 IN A DEP FREQ AT DFW AND THIS FREQ COULD HAVE BEEN XMITTED OR RECEIVED IN ERROR. 2) FREQ 124.75 IS NOT LISTED ON APCH PLATE 61-8 AS AN ALTERNATE TWR FREQ. 3) ATIS DID NOT CARRY ANY NOTAM ABOUT A CHANGE OF TWR FREQ FOR RWY 13R. 4) FREQ 124.15 WAS SO CONGESTED THAT NO ACFT COULD XMIT ON THIS FREQ. THE ONLY XMISSIONS WERE DIRECTIONS FROM TWR AND ACKNOWLEDGEMENTS BY ACFT. CORRECTIVE ACTIONS: PRINT 124.75 AS AN ALTERNATE FREQ FOR RWY 13L. NOTAM FREQ 124.75 AS AN ALTERNATE FREQ ON ATIS DECREASE CONGESTION OF TWR FREQ.

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.