GA small aircraft unauthorized penetration of special interest activity airspace.

Attributes
ACN	181235
Time
Date	199106
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dto
State Reference	TX
Altitude	agl bound lower : 300 agl bound upper : 300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	climbout : takeoff
Flight Plan	VFR
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 2840 flight time type : 250
ASRS Report	181235
Person 2
Affiliation	Other
Function	instruction : trainee
Qualification	pilot : student
Events
Anomaly	non adherence : far other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I knew the meet was this weekend. I thought it was saturday and sunday. Warning flyer states warning will be posted at least 1 week prior. It was not posted at denton until after we returned from this flight. Temporary tower was not operating at time of departure. No other aircraft was running nor moving at this time of departure. Tower did not gave light signals. I had self-briefed WX this morning on tv and radio. I did not know the box was prohibited at the time. After verifying that there was no other traffic in the area, student and I departed through the box at 250' AGL. Returning from the practice area, we crossed midfield at 150 degrees entering a left downwind for 17. There were 2 other aircraft in the pattern. There was no spacing problem. Our small aircraft has not radio. Situation would have been avoided if I had checked for NOTAMS or if warning flyer had been displayed.

Original NASA ASRS Text

Title: GA SMA UNAUTH PENETRATION OF SPECIAL INTEREST ACTIVITY AIRSPACE.

Narrative: I KNEW THE MEET WAS THIS WEEKEND. I THOUGHT IT WAS SATURDAY AND SUNDAY. WARNING FLYER STATES WARNING WILL BE POSTED AT LEAST 1 WK PRIOR. IT WAS NOT POSTED AT DENTON UNTIL AFTER WE RETURNED FROM THIS FLT. TEMPORARY TWR WAS NOT OPERATING AT TIME OF DEP. NO OTHER ACFT WAS RUNNING NOR MOVING AT THIS TIME OF DEP. TWR DID NOT GAVE LIGHT SIGNALS. I HAD SELF-BRIEFED WX THIS MORNING ON TV AND RADIO. I DID NOT KNOW THE BOX WAS PROHIBITED AT THE TIME. AFTER VERIFYING THAT THERE WAS NO OTHER TFC IN THE AREA, STUDENT AND I DEPARTED THROUGH THE BOX AT 250' AGL. RETURNING FROM THE PRACTICE AREA, WE CROSSED MIDFIELD AT 150 DEGS ENTERING A LEFT DOWNWIND FOR 17. THERE WERE 2 OTHER ACFT IN THE PATTERN. THERE WAS NO SPACING PROB. OUR SMA HAS NOT RADIO. SITUATION WOULD HAVE BEEN AVOIDED IF I HAD CHKED FOR NOTAMS OR IF WARNING FLYER HAD BEEN DISPLAYED.

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.