Katana DA20 was told to call base but never did. The result was landing without ATC clearance.

Attributes
ACN	364820
Time
Date	199703
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ixd
State Reference	KS
Altitude	msl bound lower : 1000 msl bound upper : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ixd
Operator	general aviation : personal
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 91
Flight Phase	landing other other
Flight Plan	None
Person 1
Affiliation	Other
Function	observation : observer observation : passenger
Qualification	pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 80 flight time total : 1500 flight time type : 25
ASRS Report	364820
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : cfi
Events
Anomaly	incursion : landing without clearance
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were on a routine flight from 9k4 airport to ixd airport. Kansas city approach handed us off to ixd tower, and tower told us to call our left base. At this time, my friend and fellow CFI was flying and working the radios. We were both preoccupied looking for traffic entering on a right base for the same runway. We entered left base and landed uneventfully. After landing, we both realized that we had just landed without clearance. We spoke with the tower and apologized. The WX was clear and the flight was so uneventful that we became focused on looking for the other traffic and we completely forgot to call our base (and subsequently never received landing clearance). Another contributing factor was the fact that we had flown into this airport many times before, and this was another 'routine' flight for us.

Original NASA ASRS Text

Title: KATANA DA20 WAS TOLD TO CALL BASE BUT NEVER DID. THE RESULT WAS LNDG WITHOUT ATC CLRNC.

Narrative: WE WERE ON A ROUTINE FLT FROM 9K4 ARPT TO IXD ARPT. KANSAS CITY APCH HANDED US OFF TO IXD TWR, AND TWR TOLD US TO CALL OUR L BASE. AT THIS TIME, MY FRIEND AND FELLOW CFI WAS FLYING AND WORKING THE RADIOS. WE WERE BOTH PREOCCUPIED LOOKING FOR TFC ENTERING ON A R BASE FOR THE SAME RWY. WE ENTERED L BASE AND LANDED UNEVENTFULLY. AFTER LNDG, WE BOTH REALIZED THAT WE HAD JUST LANDED WITHOUT CLRNC. WE SPOKE WITH THE TWR AND APOLOGIZED. THE WX WAS CLR AND THE FLT WAS SO UNEVENTFUL THAT WE BECAME FOCUSED ON LOOKING FOR THE OTHER TFC AND WE COMPLETELY FORGOT TO CALL OUR BASE (AND SUBSEQUENTLY NEVER RECEIVED LNDG CLRNC). ANOTHER CONTRIBUTING FACTOR WAS THE FACT THAT WE HAD FLOWN INTO THIS ARPT MANY TIMES BEFORE, AND THIS WAS ANOTHER 'ROUTINE' FLT FOR US.

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.