Narrative:

My student and I were en route after practicing some single engine VOR approachs into concord airport. We were flying preparing for his commercial multi-engine chkride. After departing concord, we were flying direct to gnoss field, where I then failed his right engine. After going through single-engine emergency procedures, the student then decided to divert to napa airport, where the runways are larger and longer. He proceeded to receive the napa ATIS followed by an initial callup to napa tower 8 mi south of the airport. At this time, he incorrectly idented his position as being 8 mi southeast of the airport. Napa tower instructed us to enter a right base for runway 36R, report a 2 mi base leg. Since we were south, my student proceeded straight in for 36R. At 4 mi from the approach end to runway 36R, I advised my student to call up the tower informing them of our position. By the time my student called the tower, we were on 2 mi final. After several xmissions between tower and our aircraft, we were verbally scolded for not reporting 'in' on a 2 mi base leg. We were then advised to switch to runway 36L with the chance of a possible go around. Seconds later, we were advised to execute a go around which we complied with. We then requested a left turn out for a VFR departure to gnoss field. Before executing our go around, I ended our single engine approach, allowing my student to bring up the right engine throttle. The entire incident could have been avoided if I would have advised my student of his mistake. Instead, I wanted my student to learn the hard way from experience. My judgement on the decision was based on the fact that the air traffic area was not that busy and I was concerned with his single engine emergency procedures. So the bottom line: 'correct the mistakes when they occur, or else the snowball effect with occur.'

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Original NASA ASRS Text

Title: STUDENT PLT MISSTATED HIS POSITION ON ORIGINAL COM WITH TWR. CONFUSED TWR PLANNING. TWR INSTRUCTED PLT TO GO AROUND. PLT IN TRAINING DEPARTED APC AREA.

Narrative: MY STUDENT AND I WERE ENRTE AFTER PRACTICING SOME SINGLE ENG VOR APCHS INTO CONCORD ARPT. WE WERE FLYING PREPARING FOR HIS COMMERCIAL MULTI-ENG CHKRIDE. AFTER DEPARTING CONCORD, WE WERE FLYING DIRECT TO GNOSS FIELD, WHERE I THEN FAILED HIS RIGHT ENG. AFTER GOING THROUGH SINGLE-ENG EMER PROCS, THE STUDENT THEN DECIDED TO DIVERT TO NAPA ARPT, WHERE THE RWYS ARE LARGER AND LONGER. HE PROCEEDED TO RECEIVE THE NAPA ATIS FOLLOWED BY AN INITIAL CALLUP TO NAPA TWR 8 MI S OF THE ARPT. AT THIS TIME, HE INCORRECTLY IDENTED HIS POS AS BEING 8 MI SE OF THE ARPT. NAPA TWR INSTRUCTED US TO ENTER A RIGHT BASE FOR RWY 36R, RPT A 2 MI BASE LEG. SINCE WE WERE S, MY STUDENT PROCEEDED STRAIGHT IN FOR 36R. AT 4 MI FROM THE APCH END TO RWY 36R, I ADVISED MY STUDENT TO CALL UP THE TWR INFORMING THEM OF OUR POS. BY THE TIME MY STUDENT CALLED THE TWR, WE WERE ON 2 MI FINAL. AFTER SEVERAL XMISSIONS BTWN TWR AND OUR ACFT, WE WERE VERBALLY SCOLDED FOR NOT RPTING 'IN' ON A 2 MI BASE LEG. WE WERE THEN ADVISED TO SWITCH TO RWY 36L WITH THE CHANCE OF A POSSIBLE GAR. SECS LATER, WE WERE ADVISED TO EXECUTE A GAR WHICH WE COMPLIED WITH. WE THEN REQUESTED A LEFT TURN OUT FOR A VFR DEP TO GNOSS FIELD. BEFORE EXECUTING OUR GAR, I ENDED OUR SINGLE ENG APCH, ALLOWING MY STUDENT TO BRING UP THE RIGHT ENG THROTTLE. THE ENTIRE INCIDENT COULD HAVE BEEN AVOIDED IF I WOULD HAVE ADVISED MY STUDENT OF HIS MISTAKE. INSTEAD, I WANTED MY STUDENT TO LEARN THE HARD WAY FROM EXPERIENCE. MY JUDGEMENT ON THE DECISION WAS BASED ON THE FACT THAT THE ATA WAS NOT THAT BUSY AND I WAS CONCERNED WITH HIS SINGLE ENG EMER PROCS. SO THE BOTTOM LINE: 'CORRECT THE MISTAKES WHEN THEY OCCUR, OR ELSE THE SNOWBALL EFFECT WITH OCCUR.'

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.