Narrative:

I was conducting pilot training in the pattern at north las vegas, nv, at approximately XA00 local time. We were in the downwind (left) for runway 7 and had not been sequenced to the airport or told to extend downwind (to my knowledge) and I had not acknowledged any instructions, so we turned a normal left base. Upon turning base my student saw the piper navajo at the same time the tower controller told the navajo to break off the approach. We continued on the approach and did a touch and go and continued in the pattern to a full stop landing. After we exited the runway and contacted ground control we were told to copy a telephone number and call the tower after parking, which I did. The problem arose due to the fact that I did not know that the piper navajo chieftain was on final approach for runway 7. Perhaps it was due to the fact I was giving instruction and did not have a proper level of situational awareness, however I was not sequenced or told to extend downwind (or at least I never acknowledged any such instructions). There are many contributing factors which led to this situation, but I feel the biggest one is how busy this airport has become over the last several yrs -- due to the fact that mccarren international airport has become so busy, which has caused recent changes to the arrival procedures into this airport. These changes have been very disrupting to the traffic flow in and out of this airport. I feel that the situation needs to be looked at before we have a midair collision at this airport.

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Original NASA ASRS Text

Title: INSTRUCTOR PLT OF A C172 TRAINING FLT DIRECTED TRAINEE TO TURN BASE LEG WITHOUT FIRST BEING TOLD TO DO SO BY TWR CAUSING A PIPER NAVAJO, PA31-350, TO BREAK OFF FINAL AT THE DIRECTION OF THE TWR CTLR.

Narrative: I WAS CONDUCTING PLT TRAINING IN THE PATTERN AT NORTH LAS VEGAS, NV, AT APPROX XA00 LCL TIME. WE WERE IN THE DOWNWIND (L) FOR RWY 7 AND HAD NOT BEEN SEQUENCED TO THE ARPT OR TOLD TO EXTEND DOWNWIND (TO MY KNOWLEDGE) AND I HAD NOT ACKNOWLEDGED ANY INSTRUCTIONS, SO WE TURNED A NORMAL L BASE. UPON TURNING BASE MY STUDENT SAW THE PIPER NAVAJO AT THE SAME TIME THE TWR CTLR TOLD THE NAVAJO TO BREAK OFF THE APCH. WE CONTINUED ON THE APCH AND DID A TOUCH AND GO AND CONTINUED IN THE PATTERN TO A FULL STOP LNDG. AFTER WE EXITED THE RWY AND CONTACTED GND CTL WE WERE TOLD TO COPY A TELEPHONE NUMBER AND CALL THE TWR AFTER PARKING, WHICH I DID. THE PROB AROSE DUE TO THE FACT THAT I DID NOT KNOW THAT THE PIPER NAVAJO CHIEFTAIN WAS ON FINAL APCH FOR RWY 7. PERHAPS IT WAS DUE TO THE FACT I WAS GIVING INSTRUCTION AND DID NOT HAVE A PROPER LEVEL OF SITUATIONAL AWARENESS, HOWEVER I WAS NOT SEQUENCED OR TOLD TO EXTEND DOWNWIND (OR AT LEAST I NEVER ACKNOWLEDGED ANY SUCH INSTRUCTIONS). THERE ARE MANY CONTRIBUTING FACTORS WHICH LED TO THIS SIT, BUT I FEEL THE BIGGEST ONE IS HOW BUSY THIS ARPT HAS BECOME OVER THE LAST SEVERAL YRS -- DUE TO THE FACT THAT MCCARREN INTL ARPT HAS BECOME SO BUSY, WHICH HAS CAUSED RECENT CHANGES TO THE ARR PROCS INTO THIS ARPT. THESE CHANGES HAVE BEEN VERY DISRUPTING TO THE TFC FLOW IN AND OUT OF THIS ARPT. I FEEL THAT THE SIT NEEDS TO BE LOOKED AT BEFORE WE HAVE A MIDAIR COLLISION AT THIS ARPT.

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.