Instructor with student makes approach lined up with taxiway. Go around.

Attributes
ACN	187985
Time
Date	199109
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lvk
State Reference	CA
Altitude	agl bound lower : 250 agl bound upper : 250
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : lvk
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	descent : approach
Flight Plan	VFR
Person 1
Affiliation	Other
Function	instruction : instructor oversight : pic
Qualification	pilot : commercial pilot : instrument pilot : cfi
Experience	flight time last 90 days : 150 flight time total : 1050 flight time type : 800
ASRS Report	187985
Person 2
Affiliation	Other
Function	flight crew : single pilot instruction : trainee
Qualification	pilot : student
Events
Anomaly	non adherence : clearance other anomaly other other spatial deviation
Independent Detector	other controllera
Resolutory Action	flight crew : exited adverse environment other other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was doing a stage check (evaluation) of a student pilot in traffic pattern operations. Student turned onto final and proceeded to line up with taxiway. Tower informed pilot that they thought he was going to land on taxiway. Student missed call. I did not do anything hoping the student would realized his mistake. Just before I was going to break it off, tower informed us to go around. My mistake was that I should not have let it go as long as I did but I wanted to give student benefit of the doubt.

Original NASA ASRS Text

Title: INSTRUCTOR WITH STUDENT MAKES APCH LINED UP WITH TAXIWAY. GAR.

Narrative: I WAS DOING A STAGE CHK (EVALUATION) OF A STUDENT PLT IN TFC PATTERN OPS. STUDENT TURNED ONTO FINAL AND PROCEEDED TO LINE UP WITH TAXIWAY. TWR INFORMED PLT THAT THEY THOUGHT HE WAS GOING TO LAND ON TAXIWAY. STUDENT MISSED CALL. I DID NOT DO ANYTHING HOPING THE STUDENT WOULD REALIZED HIS MISTAKE. JUST BEFORE I WAS GOING TO BREAK IT OFF, TWR INFORMED US TO GAR. MY MISTAKE WAS THAT I SHOULD NOT HAVE LET IT GO AS LONG AS I DID BUT I WANTED TO GIVE STUDENT BENEFIT OF THE DOUBT.

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.