A G150 captain taxied out for takeoff at uox after a NOTAM established temporary tower was supposed ...

Attributes
ACN	981360
Time
Date	201111
Local Time Of Day	1801-2400
Place
Locale Reference	UOX.Airport
State Reference	MS
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	Gulfstream G100/G150 (IAI 1125 Astra)
Operating Under FAR Part	Part 91
Flight Phase	Takeoff
Route In Use	Direct
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 150 Flight Crew Total 7500 Flight Crew Type 1000
Events
Anomaly	ATC Issue All Types

Narrative:

After checking the NOTAM's; I disregarded a NOTAM about a temporary tower being active. The NOTAM expired at 0100. Our departure was 0246. I was not expecting the tower to still be open. The CTAF frequency is 123.0. The temporary tower frequency was 119.55. In hindsight we should have monitored both frequencies. The tower controller called us on 123.0 after we announced we were taking the runway for departure. Normally this airport is uncontrolled. There was a temporary tower for an event. We were confused and felt like we were on the wrong frequency. We were glad to have the controller; however we thought the tower was closed. There was no conflict with traffic. After we switched to the tower frequency; we sat on the runway for approximately 30 seconds awaiting another aircraft to clear the runway before being cleared for takeoff. It would be ideal; in my opinion; if the temporary tower frequency and the CTAF could be identical. Also if the AWOS or ASOS could announce that a tower was still active that would help alleviate confusion.

Original NASA ASRS Text

Title: A G150 Captain taxied out for takeoff at UOX after a NOTAM established temporary Tower was supposed to have closed. It has not closed it was discovered when he was contacted by the Tower on the CTAF.

Narrative: After checking the NOTAM's; I disregarded a NOTAM about a temporary Tower being active. The NOTAM expired at 0100. Our departure was 0246. I was not expecting the Tower to still be open. The CTAF frequency is 123.0. The temporary Tower frequency was 119.55. In hindsight we should have monitored both frequencies. The Tower Controller called us on 123.0 after we announced we were taking the runway for departure. Normally this airport is uncontrolled. There was a temporary Tower for an event. We were confused and felt like we were on the wrong frequency. We were glad to have the Controller; however we thought the Tower was closed. There was no conflict with traffic. After we switched to the Tower frequency; we sat on the runway for approximately 30 seconds awaiting another aircraft to clear the runway before being cleared for takeoff. It would be ideal; in my opinion; if the temporary Tower frequency and the CTAF could be identical. Also if the AWOS or ASOS could announce that a Tower was still active that would help alleviate confusion.

Data retrieved from NASA's ASRS site as of April 2012 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.

A G150 captain taxied out for takeoff at uox after a NOTAM established temporary tower was supposed to have closed. It has not closed it was discovered when he was contacted by the tower on the CTAF.