Military-spc and cpr-mdt have close call in traffic pattern.

Attributes
ACN	92438
Time
Date	198806
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : pwk airport : nbu
State Reference	IL
Altitude	msl bound lower : 1400 msl bound upper : 1700
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : nbu
Operator	other
Make Model Name	Experimental
Flight Phase	climbout : initial climbout : takeoff other
Flight Plan	VFR
Aircraft 2
Operator	general aviation : corporate
Make Model Name	Medium Transport
Flight Phase	cruise other
Person 1
Affiliation	government : military
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : military pilot : atp
Experience	flight time last 90 days : 35 flight time total : 1800 flight time type : 35
ASRS Report	92438
Person 2
Affiliation	government : military
Function	controller : local
Qualification	controller : military
Events
Anomaly	conflict : nmac non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action none taken : insufficient time other
Consequence	Other
Miss Distance	horizontal : 0 vertical : 300
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Climbing out southbound after a training touch and go on runway 17, we had been cleared for a left downwind, normal pattern altitude is 1700' MSL. Passing through 1200' MSL, approximately 1/2-1 NM south of runway end, I saw traffic at about 10:30 slightly high, heading wbound. I immediately acted to level off the aircraft forcefully pushing the nose over. At the same time I increased the angle of bank (left) in an attempt to pass the traffic to the north. Just seconds after passing through 1200' MSL, we were directed by glenview tower to immediately level off at 1200'. The aircraft reached approximately 1470' before starting a descent back down to 1200'. It was at this point that the traffic, an mdt, 3 engine corp jet, passed directly overhead. The mdt was on a VFR clearance wbound for palwaukee airport, and had been cleared by glenview tower to remain at least 2 mi south of runway 17, at 1900' MSL. The traffic was never passed to us by the tower.

Original NASA ASRS Text

Title: MIL-SPC AND CPR-MDT HAVE CLOSE CALL IN TRAFFIC PATTERN.

Narrative: CLBING OUT SBND AFTER A TRNING TOUCH AND GO ON RWY 17, WE HAD BEEN CLRED FOR A LEFT DOWNWIND, NORMAL PATTERN ALT IS 1700' MSL. PASSING THROUGH 1200' MSL, APPROX 1/2-1 NM S OF RWY END, I SAW TFC AT ABOUT 10:30 SLIGHTLY HIGH, HDG WBOUND. I IMMEDIATELY ACTED TO LEVEL OFF THE ACFT FORCEFULLY PUSHING THE NOSE OVER. AT THE SAME TIME I INCREASED THE ANGLE OF BANK (LEFT) IN AN ATTEMPT TO PASS THE TFC TO THE N. JUST SECS AFTER PASSING THROUGH 1200' MSL, WE WERE DIRECTED BY GLENVIEW TWR TO IMMEDIATELY LEVEL OFF AT 1200'. THE ACFT REACHED APPROX 1470' BEFORE STARTING A DSCNT BACK DOWN TO 1200'. IT WAS AT THIS POINT THAT THE TFC, AN MDT, 3 ENG CORP JET, PASSED DIRECTLY OVERHEAD. THE MDT WAS ON A VFR CLRNC WBOUND FOR PALWAUKEE ARPT, AND HAD BEEN CLRED BY GLENVIEW TWR TO REMAIN AT LEAST 2 MI S OF RWY 17, AT 1900' MSL. THE TFC WAS NEVER PASSED TO US BY THE TWR.

Data retrieved from NASA's ASRS site as of August 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.