A pilot found that a temporary tower had been erected upon return to his home base.

Attributes
ACN	267393
Time
Date	199404
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : 49j
State Reference	SC
Altitude	agl bound lower : 0 agl bound upper : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : 49j tower : ojc
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	ground : preflight other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 14 flight time total : 4895
ASRS Report	267393
Person 2
Affiliation	government other
Function	other personnel
Events
Anomaly	non adherence : published procedure other anomaly other other anomaly other
Independent Detector	other other : unspecified
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On descent to hilton head sc airport (49J), I attempted to contact unicom on their published frequency of 123.0 when 10 mi out. Continued calls brought no response. I entered the airport traffic pattern on left downwind to runway 21, announcing my position on downwind, base and final (a total of 3 times) no response was received to any of my calls. When approximately 2 mi on final, I received an announcement on unicom that a temporary tower had been set up to handle traffic for the family cup tennis tournament, and was in use. I immediately announced that I would terminate the approach and began to go around. The voice on the unicom said to continue to land and contact the tower on their frequency. I switched to the temporary tower frequency upon touching down, and was cleared to the ramp. No further communications with the temporary tower was requested or was made. I did not inquire as to whom I spoke on unicom, or why my half dozen or so calls to them went unanswered.

Original NASA ASRS Text

Title: A PLT FOUND THAT A TEMPORARY TWR HAD BEEN ERECTED UPON RETURN TO HIS HOME BASE.

Narrative: ON DSCNT TO HILTON HEAD SC ARPT (49J), I ATTEMPTED TO CONTACT UNICOM ON THEIR PUBLISHED FREQ OF 123.0 WHEN 10 MI OUT. CONTINUED CALLS BROUGHT NO RESPONSE. I ENTERED THE ARPT TFC PATTERN ON L DOWNWIND TO RWY 21, ANNOUNCING MY POS ON DOWNWIND, BASE AND FINAL (A TOTAL OF 3 TIMES) NO RESPONSE WAS RECEIVED TO ANY OF MY CALLS. WHEN APPROX 2 MI ON FINAL, I RECEIVED AN ANNOUNCEMENT ON UNICOM THAT A TEMPORARY TWR HAD BEEN SET UP TO HANDLE TFC FOR THE FAMILY CUP TENNIS TOURNAMENT, AND WAS IN USE. I IMMEDIATELY ANNOUNCED THAT I WOULD TERMINATE THE APCH AND BEGAN TO GAR. THE VOICE ON THE UNICOM SAID TO CONTINUE TO LAND AND CONTACT THE TWR ON THEIR FREQ. I SWITCHED TO THE TEMPORARY TWR FREQ UPON TOUCHING DOWN, AND WAS CLRED TO THE RAMP. NO FURTHER COMS WITH THE TEMPORARY TWR WAS REQUESTED OR WAS MADE. I DID NOT INQUIRE AS TO WHOM I SPOKE ON UNICOM, OR WHY MY HALF DOZEN OR SO CALLS TO THEM WENT UNANSWERED.

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.