Lake la-4 pilot enters stc class D airspace without clearance.

Attributes
ACN	707209
Time
Date	200608
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : stc.airport
State Reference	MN
Altitude	msl single value : 2500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : stc.tower
Operator	general aviation : instructional
Make Model Name	LA-4 A/B Buccaneer
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	cruise : level
Route In Use	enroute other
Flight Plan	None
Person 1
Affiliation	other
Function	instruction : trainee
Qualification	pilot : private
Experience	flight time last 90 days : 33 flight time total : 115 flight time type : 24
ASRS Report	707209
Person 2
Affiliation	other
Function	instruction : instructor oversight : pic
Events
Anomaly	airspace violation : entry non adherence : far
Independent Detector	other controllera
Resolutory Action	controller : issued advisory
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Chart Or Publication Flight Crew Human Performance Airport
Primary Problem	Flight Crew Human Performance

Narrative:

I was being trained to fly a lake amphibian by an instructor who was from a different state. We entered class D airspace that was less than 2 yrs old. I used a unicom channel that was obsolete and didn't discover the correct channel until we were well within class D airspace. I didn't have the sectional in front of me and he didn't know it was class D airspace because he inadvertently grabbed a sectional that was expired although we had a current sectional in the aircraft. The unicom frequency we used was being monitored by the airport FBO but no one called me to let me know I was on the incorrect frequency. The tower was very helpful and understanding as well as courteous to me even as we were in his airspace (st cloud; mn).

Original NASA ASRS Text

Title: LAKE LA-4 PLT ENTERS STC CLASS D AIRSPACE WITHOUT CLRNC.

Narrative: I WAS BEING TRAINED TO FLY A LAKE AMPHIBIAN BY AN INSTRUCTOR WHO WAS FROM A DIFFERENT STATE. WE ENTERED CLASS D AIRSPACE THAT WAS LESS THAN 2 YRS OLD. I USED A UNICOM CHANNEL THAT WAS OBSOLETE AND DIDN'T DISCOVER THE CORRECT CHANNEL UNTIL WE WERE WELL WITHIN CLASS D AIRSPACE. I DIDN'T HAVE THE SECTIONAL IN FRONT OF ME AND HE DIDN'T KNOW IT WAS CLASS D AIRSPACE BECAUSE HE INADVERTENTLY GRABBED A SECTIONAL THAT WAS EXPIRED ALTHOUGH WE HAD A CURRENT SECTIONAL IN THE ACFT. THE UNICOM FREQ WE USED WAS BEING MONITORED BY THE ARPT FBO BUT NO ONE CALLED ME TO LET ME KNOW I WAS ON THE INCORRECT FREQ. THE TWR WAS VERY HELPFUL AND UNDERSTANDING AS WELL AS COURTEOUS TO ME EVEN AS WE WERE IN HIS AIRSPACE (ST CLOUD; MN).

Data retrieved from NASA's ASRS site as of January 2009 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.