Narrative:

Instrument training flight to paine field for ILS practice approachs. I decided to try a change on the student by giving him an approach at awo, (arlington) (localizer runway 34) on the way to vectors for ILS runway 16 at pae, a typical training route for IFR training. I requested the localizer runway 34 at awo, and was cleared to the airport later for the approach, contacted advisory frequency at awo to announce straight in runway 34 localizer approach. About 2 mi out or so, we noticed a steady green light. I then realized that the temporary tower was in operation at awo for an upcoming special event at awo, and we had not contacted them on the temporary frequency for the low approach. There were no aircraft that we could see in the pattern, and it was about 20 mins before temporary tower closed. We proceeded to miss the approach and continue to pae for the ILS, without incident. The problems that led to this was: 1) not asking for NOTAMS for arlington during the FSS preflight briefing for the flight, 2) mentally slipping a day, thinking it was tuesday instead of wednesday, 3) complacency within the normal training route and routine, and 4) ATC, ZSE, cleared us for an approach that was not (according to information in mail), to be authority/authorized during that period of time, at awo.

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Original NASA ASRS Text

Title: AN SMA ON AN INST TRAINING FLT MAKES AN APCH INTO AWO, WA. INSTRUCTOR FORGOT THERE WAS A TEMPORARY TWR WHICH HE NEVER ASKS FOR CLRNC. HE REALIZES HIS MISTAKE WHEN THE TEMPORARY TWR FLASHES HIM A GREEN LIGHT FOR LNDG.

Narrative: INST TRAINING FLT TO PAINE FIELD FOR ILS PRACTICE APCHS. I DECIDED TO TRY A CHANGE ON THE STUDENT BY GIVING HIM AN APCH AT AWO, (ARLINGTON) (LOC RWY 34) ON THE WAY TO VECTORS FOR ILS RWY 16 AT PAE, A TYPICAL TRAINING RTE FOR IFR TRAINING. I REQUESTED THE LOC RWY 34 AT AWO, AND WAS CLRED TO THE ARPT LATER FOR THE APCH, CONTACTED ADVISORY FREQ AT AWO TO ANNOUNCE STRAIGHT IN RWY 34 LOC APCH. ABOUT 2 MI OUT OR SO, WE NOTICED A STEADY GREEN LIGHT. I THEN REALIZED THAT THE TEMPORARY TWR WAS IN OP AT AWO FOR AN UPCOMING SPECIAL EVENT AT AWO, AND WE HAD NOT CONTACTED THEM ON THE TEMPORARY FREQ FOR THE LOW APCH. THERE WERE NO ACFT THAT WE COULD SEE IN THE PATTERN, AND IT WAS ABOUT 20 MINS BEFORE TEMPORARY TWR CLOSED. WE PROCEEDED TO MISS THE APCH AND CONTINUE TO PAE FOR THE ILS, WITHOUT INCIDENT. THE PROBS THAT LED TO THIS WAS: 1) NOT ASKING FOR NOTAMS FOR ARLINGTON DURING THE FSS PREFLT BRIEFING FOR THE FLT, 2) MENTALLY SLIPPING A DAY, THINKING IT WAS TUESDAY INSTEAD OF WEDNESDAY, 3) COMPLACENCY WITHIN THE NORMAL TRAINING RTE AND ROUTINE, AND 4) ATC, ZSE, CLRED US FOR AN APCH THAT WAS NOT (ACCORDING TO INFO IN MAIL), TO BE AUTH DURING THAT PERIOD OF TIME, AT AWO.

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.