An small aircraft twin flight instructor reports that there may have been a near midair collision, a...

Attributes
ACN	221887
Time
Date	199209
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : bjc
State Reference	CO
Altitude	msl bound lower : 7500 msl bound upper : 7500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : bjc
Operator	general aviation : instructional
Make Model Name	Small Aircraft, Low Wing, 2 Eng, Retractable Gear
Flight Phase	descent : approach landing other other
Flight Plan	None
Aircraft 2
Make Model Name	Small Aircraft
Flight Phase	descent : approach landing other other
Person 1
Affiliation	Other
Function	instruction : instructor oversight : pic
Qualification	pilot : atp pilot : commercial pilot : instrument pilot : cfi
Experience	flight time last 90 days : 100 flight time total : 1800 flight time type : 30
ASRS Report	221887
Person 2
Affiliation	Other
Function	flight crew : single pilot instruction : trainee
Qualification	pilot : instrument pilot : commercial
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

This was a multi-engine training flight. I was in the right seat of an small aircraft and my student was flying under the hood. As we were approaching the jeffco traffic pattern at approximately 7500-7300 ft, I noticed another aircraft right of our aircraft and lower. I determined that, due to our altitude above and offset from the other aircraft, evasive action was not necessary. We were overtaking the aircraft at a high pace. So our present course was the fastest way to avoid. After I reported in to bjc tower for landing, another aircraft asked tower if nx was on frequency. Tower replied affirmative, and the aircraft reported a near miss. On mon, X, mr Y called from the FAA to inquire on this report. He said that the pilot reported a 30 ft near miss. If this is an accurate statement, then I did not ever see the aircraft and therefore could not take evasive action. It is possible that this other aircraft did have a near miss with another light twin and since he heard my numbers on the tower frequency assumed it was me. I do not know what solutions I can offer for this situation because I'm not certain that it was my aircraft that was involved.

Original NASA ASRS Text

Title: AN SMA TWIN FLT INSTRUCTOR RPTS THAT THERE MAY HAVE BEEN A NMAC, AS WELL AS A LESS SEVERE CONFLICT, IN THE BJC TFC PATTERN UNDER TWR CTL.

Narrative: THIS WAS A MULTI-ENG TRAINING FLT. I WAS IN THE R SEAT OF AN SMA AND MY STUDENT WAS FLYING UNDER THE HOOD. AS WE WERE APCHING THE JEFFCO TFC PATTERN AT APPROX 7500-7300 FT, I NOTICED ANOTHER ACFT R OF OUR ACFT AND LOWER. I DETERMINED THAT, DUE TO OUR ALT ABOVE AND OFFSET FROM THE OTHER ACFT, EVASIVE ACTION WAS NOT NECESSARY. WE WERE OVERTAKING THE ACFT AT A HIGH PACE. SO OUR PRESENT COURSE WAS THE FASTEST WAY TO AVOID. AFTER I RPTED IN TO BJC TWR FOR LNDG, ANOTHER ACFT ASKED TWR IF NX WAS ON FREQ. TWR REPLIED AFFIRMATIVE, AND THE ACFT RPTED A NEAR MISS. ON MON, X, MR Y CALLED FROM THE FAA TO INQUIRE ON THIS RPT. HE SAID THAT THE PLT RPTED A 30 FT NEAR MISS. IF THIS IS AN ACCURATE STATEMENT, THEN I DID NOT EVER SEE THE ACFT AND THEREFORE COULD NOT TAKE EVASIVE ACTION. IT IS POSSIBLE THAT THIS OTHER ACFT DID HAVE A NEAR MISS WITH ANOTHER LIGHT TWIN AND SINCE HE HEARD MY NUMBERS ON THE TWR FREQ ASSUMED IT WAS ME. I DO NOT KNOW WHAT SOLUTIONS I CAN OFFER FOR THIS SITUATION BECAUSE I'M NOT CERTAIN THAT IT WAS MY ACFT THAT WAS INVOLVED.

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.

An small aircraft twin flight instructor reports that there may have been a near midair collision, as well as a less severe conflict, in the bjc traffic pattern under tower control.