GA small aircraft unauthorized penetration of ads air traffic area.

Attributes
ACN	190168
Time
Date	199109
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : ads airport : f69
State Reference	TX
Altitude	msl bound lower : 1700 msl bound upper : 1700
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	tower : ads
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	climbout : intermediate altitude cruise other other
Flight Plan	None
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : commercial pilot : instrument pilot : cfi
Experience	flight time last 90 days : 70 flight time total : 780 flight time type : 300
ASRS Report	190168
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 none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While conducting a VFR training flight the following situation arose. After departing addison airport, we flew to air park airport, an uncontrolled field 3 NM north of addison airport. This airport is inside the addison air traffic area. We conveyed our intentions to the addison controller and he told us to switch frequencys to the air park CTAF. We made several lndgs at air park and, at dusk, decided to depart air park, eastbound. Flying east from air park, we were monitoring the addison tower frequency. The tower began making calls to the unidented aircraft northeast of addison. We believed that since we were departing an uncontrolled field within another airport's air traffic area, contact with the primary airport was not necessary. We had not, therefore, planned to communication with addison tower. Looking north, we saw another aircraft and believed the tower's transmission was intended for it. We never heard any replies to the tower's broadcasts to the unidented aircraft northeast of addison. Looking back, I believe I should have acknowledged the call, but at the time, I didn't believe it was necessary. We never observed any unusual situations and completed the flight without anything else out of the ordinary occurring. This was a confusing situation where we were in the air traffic area only briefly and were not required to monitor the tower frequency.

Original NASA ASRS Text

Title: GA SMA UNAUTHORIZED PENETRATION OF ADS ATA.

Narrative: WHILE CONDUCTING A VFR TRAINING FLT THE FOLLOWING SITUATION AROSE. AFTER DEPARTING ADDISON ARPT, WE FLEW TO AIR PARK ARPT, AN UNCTLED FIELD 3 NM N OF ADDISON ARPT. THIS ARPT IS INSIDE THE ADDISON ATA. WE CONVEYED OUR INTENTIONS TO THE ADDISON CTLR AND HE TOLD US TO SWITCH FREQS TO THE AIR PARK CTAF. WE MADE SEVERAL LNDGS AT AIR PARK AND, AT DUSK, DECIDED TO DEPART AIR PARK, EBOUND. FLYING E FROM AIR PARK, WE WERE MONITORING THE ADDISON TWR FREQ. THE TWR BEGAN MAKING CALLS TO THE UNIDENTED ACFT NE OF ADDISON. WE BELIEVED THAT SINCE WE WERE DEPARTING AN UNCTLED FIELD WITHIN ANOTHER ARPT'S ATA, CONTACT WITH THE PRIMARY ARPT WAS NOT NECESSARY. WE HAD NOT, THEREFORE, PLANNED TO COM WITH ADDISON TWR. LOOKING N, WE SAW ANOTHER ACFT AND BELIEVED THE TWR'S XMISSION WAS INTENDED FOR IT. WE NEVER HEARD ANY REPLIES TO THE TWR'S BROADCASTS TO THE UNIDENTED ACFT NE OF ADDISON. LOOKING BACK, I BELIEVE I SHOULD HAVE ACKNOWLEDGED THE CALL, BUT AT THE TIME, I DIDN'T BELIEVE IT WAS NECESSARY. WE NEVER OBSERVED ANY UNUSUAL SITUATIONS AND COMPLETED THE FLT WITHOUT ANYTHING ELSE OUT OF THE ORDINARY OCCURRING. THIS WAS A CONFUSING SITUATION WHERE WE WERE IN THE ATA ONLY BRIEFLY AND WERE NOT REQUIRED TO MONITOR THE 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.