Flight instructor of a C172 ordered his student pilot to go around after observing a beech bonanza, ...

Attributes
ACN	484857
Time
Date	200009
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dkb.airport
State Reference	IL
Altitude	agl single value : 350
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	descent : approach
Route In Use	approach : traffic pattern
Flight Plan	None
Aircraft 2
Operator	general aviation : personal
Make Model Name	Bonanza 35
Flight Phase	descent : approach
Route In Use	approach : traffic pattern
Person 1
Affiliation	other
Function	instruction : instructor
Qualification	pilot : commercial pilot : cfi
Experience	flight time last 90 days : 28 flight time total : 398 flight time type : 107
ASRS Report	484857
Person 2
Function	instruction : trainee
Qualification	pilot : student
Events
Anomaly	conflict : airborne critical non adherence : far other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : executed go around flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 1500 vertical : 50
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

This was a dual instructional VFR flight with a student pilot to nearby dkb airport to 'polish up' the student's lndgs. Moderate ssw winds favored runway 20 and CTAF indicated other aircraft in pattern to runway 2. We (aircraft #1) entered left traffic to runway 20 on the 45 degree entry to the downwind, completing several (3) circuits. Traffic was moderately busy with 2-3 aircraft in the pattern, including arrs/departures, and practice instrument approachs. We (aircraft #1) were self-announcing on CTAF and coordinating with other aircraft, especially those on practice approachs. Other pilots were also making good use of CTAF. After turning final to runway 20 during one of our circuits, my student and I simultaneously noticed a v-tail bonanza (in the upper left windshield -- apparent position moving little) on a high and close left base to runway 20. My student initially stated to dive down to resolve the conflict, then I commanded a right turn and go around, with a sidestep to the right of runway 20. I assisted him on the controls for the go around, and announced on CTAF that we were going around sidestepping to the right to avoid the bonanza on left base to final. The bonanza continued to land runway 20 (landed a little long), as we climbed out right of runway 20 on the go around. Both student and instructor were shaken up and student's performance on next circuits slipped, so we went full-stop to debrief the situation and possibly talk to bonanza pilot, who was departing as we reached the ramp, so we weren't able to ask him what was going on -- emergency, etc. We did talk with FBO employee who said bonanza pilot had said that he was not self-announcing. Also, talked with pilots of a piper that was on downwind when this happened and they stated they had not heard CTAF calls from bonanza, felt he cut off both of us, and had noticed somewhat erratic altitude changes by bonanza.

Original NASA ASRS Text

Title: FLT INSTRUCTOR OF A C172 ORDERED HIS STUDENT PLT TO GAR AFTER OBSERVING A BEECH BONANZA, BE35, TURNING BASE LEG IN FRONT OF THEM WHILE THEY WERE ON FINAL TO AN UNCTLED ARPT.

Narrative: THIS WAS A DUAL INSTRUCTIONAL VFR FLT WITH A STUDENT PLT TO NEARBY DKB ARPT TO 'POLISH UP' THE STUDENT'S LNDGS. MODERATE SSW WINDS FAVORED RWY 20 AND CTAF INDICATED OTHER ACFT IN PATTERN TO RWY 2. WE (ACFT #1) ENTERED L TFC TO RWY 20 ON THE 45 DEG ENTRY TO THE DOWNWIND, COMPLETING SEVERAL (3) CIRCUITS. TFC WAS MODERATELY BUSY WITH 2-3 ACFT IN THE PATTERN, INCLUDING ARRS/DEPS, AND PRACTICE INST APCHS. WE (ACFT #1) WERE SELF-ANNOUNCING ON CTAF AND COORDINATING WITH OTHER ACFT, ESPECIALLY THOSE ON PRACTICE APCHS. OTHER PLTS WERE ALSO MAKING GOOD USE OF CTAF. AFTER TURNING FINAL TO RWY 20 DURING ONE OF OUR CIRCUITS, MY STUDENT AND I SIMULTANEOUSLY NOTICED A V-TAIL BONANZA (IN THE UPPER L WINDSHIELD -- APPARENT POS MOVING LITTLE) ON A HIGH AND CLOSE L BASE TO RWY 20. MY STUDENT INITIALLY STATED TO DIVE DOWN TO RESOLVE THE CONFLICT, THEN I COMMANDED A R TURN AND GAR, WITH A SIDESTEP TO THE R OF RWY 20. I ASSISTED HIM ON THE CTLS FOR THE GAR, AND ANNOUNCED ON CTAF THAT WE WERE GOING AROUND SIDESTEPPING TO THE R TO AVOID THE BONANZA ON L BASE TO FINAL. THE BONANZA CONTINUED TO LAND RWY 20 (LANDED A LITTLE LONG), AS WE CLBED OUT R OF RWY 20 ON THE GAR. BOTH STUDENT AND INSTRUCTOR WERE SHAKEN UP AND STUDENT'S PERFORMANCE ON NEXT CIRCUITS SLIPPED, SO WE WENT FULL-STOP TO DEBRIEF THE SIT AND POSSIBLY TALK TO BONANZA PLT, WHO WAS DEPARTING AS WE REACHED THE RAMP, SO WE WEREN'T ABLE TO ASK HIM WHAT WAS GOING ON -- EMER, ETC. WE DID TALK WITH FBO EMPLOYEE WHO SAID BONANZA PLT HAD SAID THAT HE WAS NOT SELF-ANNOUNCING. ALSO, TALKED WITH PLTS OF A PIPER THAT WAS ON DOWNWIND WHEN THIS HAPPENED AND THEY STATED THEY HAD NOT HEARD CTAF CALLS FROM BONANZA, FELT HE CUT OFF BOTH OF US, AND HAD NOTICED SOMEWHAT ERRATIC ALT CHANGES BY BONANZA.

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.

Flight instructor of a C172 ordered his student pilot to go around after observing a beech bonanza, BE35, turning base leg in front of them while they were on final to an uncontrolled airport.