<< >> NASA ASRS Report 441902, July 1999

A citabria instructor and student pilot climbed above the correct VFR cruising altitude and had a near miss with a gulfstream near apa.

Attributes
ACN	441902
Time
Date	199907
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : apa.airport
State Reference	AB
Altitude	msl bound lower : 7800 msl bound upper : 7900
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Champion Citabria
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	None
Aircraft 2
Controlling Facilities	tracon : d10.tracon
Operator	general aviation : corporate
Make Model Name	Gulfstream III
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Route In Use	departure : on vectors
Flight Plan	IFR
Person 1
Affiliation	other
Function	instruction : instructor
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 120 flight time total : 16200 flight time type : 30
ASRS Report	441902
Person 2
Affiliation	other
Function	instruction : trainee
Qualification	pilot : student
Events
Anomaly	conflict : nmac non adherence : far
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Miss Distance	horizontal : 50 vertical : 150
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was on a training flight southeast of apa airport. The student was maintaining 7500 ft MSL on a southerly heading. The air was unstable and student had difficulty maintaining altitude. The aircraft was drifting up, and I, as instructor, was distraction from altitude control momentarily. As I looked to my right (student called out traffic), a gulfstream heading east, passed over at between 100-200 ft above our altitude. I could not tell if he had begun a climb to avoid, but the last altimeter reading I saw was either 7800 ft or 7900 ft indicated. I don't believe we were actually in the floor of the TCA (class B) airspace, which is 8000 ft in that area.

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Original NASA ASRS Text

Title: A CITABRIA INSTRUCTOR AND STUDENT PLT CLBED ABOVE THE CORRECT VFR CRUISING ALT AND HAD A NEAR MISS WITH A GULFSTREAM NEAR APA.

Narrative: I WAS ON A TRAINING FLT SE OF APA ARPT. THE STUDENT WAS MAINTAINING 7500 FT MSL ON A SOUTHERLY HDG. THE AIR WAS UNSTABLE AND STUDENT HAD DIFFICULTY MAINTAINING ALT. THE ACFT WAS DRIFTING UP, AND I, AS INSTRUCTOR, WAS DISTR FROM ALT CTL MOMENTARILY. AS I LOOKED TO MY R (STUDENT CALLED OUT TFC), A GULFSTREAM HDG E, PASSED OVER AT BTWN 100-200 FT ABOVE OUR ALT. I COULD NOT TELL IF HE HAD BEGUN A CLB TO AVOID, BUT THE LAST ALTIMETER READING I SAW WAS EITHER 7800 FT OR 7900 FT INDICATED. I DON'T BELIEVE WE WERE ACTUALLY IN THE FLOOR OF THE TCA (CLASS B) AIRSPACE, WHICH IS 8000 FT IN THAT AREA.

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.