Close proximity small aircraft on training flight and unknown aircraft in traffic pattern.

Attributes
ACN	133531
Time
Date	199001
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : apa
State Reference	CO
Altitude	msl bound lower : 6700 msl bound upper : 6800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : apa
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	climbout : intermediate altitude
Route In Use	approach : visual
Flight Plan	VFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	other
Flight Plan	VFR
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : commercial pilot : cfi pilot : instrument
Experience	flight time last 90 days : 100 flight time total : 1300 flight time type : 300
ASRS Report	133531
Person 2
Affiliation	Other
Function	instruction : trainee
Events
Anomaly	altitude deviation : overshoot conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Miss Distance	horizontal : 300 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

After departure left turn to heading 100 degree, advised student to climb to 6600 MSL and level out. This was done to stay clear of numerous inbnds for left downwind entry to 17L. Frequency was very congested with traffic and ATC had little or no chance for traffic advisories. Encountered traffic (by above specified separation) realizing aircraft had climbed 100' without student's realizing (my priority was outside vigilance for traffic). Continued en route cross-check.

Original NASA ASRS Text

Title: CLOSE PROX SMA ON TRAINING FLT AND UNKNOWN ACFT IN TRAFFIC PATTERN.

Narrative: AFTER DEP LEFT TURN TO HDG 100 DEG, ADVISED STUDENT TO CLIMB TO 6600 MSL AND LEVEL OUT. THIS WAS DONE TO STAY CLEAR OF NUMEROUS INBNDS FOR LEFT DOWNWIND ENTRY TO 17L. FREQ WAS VERY CONGESTED WITH TFC AND ATC HAD LITTLE OR NO CHANCE FOR TFC ADVISORIES. ENCOUNTERED TFC (BY ABOVE SPECIFIED SEPARATION) REALIZING ACFT HAD CLIMBED 100' WITHOUT STUDENT'S REALIZING (MY PRIORITY WAS OUTSIDE VIGILANCE FOR TFC). CONTINUED ENRTE CROSS-CHECK.

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.