Close proximity GA-small aircraft cpr-small transport near atw.

Attributes
ACN	145234
Time
Date	199005
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : atw
State Reference	WI
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : grb tower : atw
Operator	general aviation : corporate
Make Model Name	Light Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 3000 flight time type : 700
ASRS Report	145234
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 300 vertical : 0
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error Inter Facility Coordination Failure

Narrative:

We were cleared for takeoff on runway 21, cleared on course (direct judas intersection, 170 NM west). As usual we maintained runway heading up to 400' AGL. Tower asked our on course heading. Copilot responded '284'. Tower advised traffic southeast of the airport and advised switch to green bay departure. Copilot reported to green bay 'out of 2000 for 3000 capable of VFR climb.' green bay advised 'right turn heading 360 maintain 3000.' as we turned through 300, we leveled at 3000'. As we were turning through 330 copilot pointed out small aircraft at 1:00 and close. Small aircraft was level and westbound. I steepened the bank to about 50 degree and small aircraft passed on our left side. After conversing with tower it appears that the tower controller was confused by what he perceived as a left bank as we climbed out prompting the question about our on course heading which he thought (correctly) would be a right turn. He interpreted copilot's '284' as 140 and proceeded to issue traffic to the southeast. He also didn't advise green bay of the small aircraft he had just departed to the west since he apparently thought we were going to msp on a 140 degree heading!? Green bay controller didn't hear the copilot's suggestion of VFR climb although tower monitoring the frequency heard it very clearly. Green bay had one controller on 3 frequencys which seems like overload. We could have continued 4000 FPM climb and been through the traffic and into smooth, less congested airspace instead of bumping along at 3000 for 20 mi.

Original NASA ASRS Text

Title: CLOSE PROX GA-SMA CPR-SMT NEAR ATW.

Narrative: WE WERE CLRED FOR TKOF ON RWY 21, CLRED ON COURSE (DIRECT JUDAS INTXN, 170 NM W). AS USUAL WE MAINTAINED RWY HDG UP TO 400' AGL. TWR ASKED OUR ON COURSE HDG. COPLT RESPONDED '284'. TWR ADVISED TFC SE OF THE ARPT AND ADVISED SWITCH TO GREEN BAY DEP. COPLT RPTED TO GREEN BAY 'OUT OF 2000 FOR 3000 CAPABLE OF VFR CLB.' GREEN BAY ADVISED 'RIGHT TURN HDG 360 MAINTAIN 3000.' AS WE TURNED THROUGH 300, WE LEVELED AT 3000'. AS WE WERE TURNING THROUGH 330 COPLT POINTED OUT SMA AT 1:00 AND CLOSE. SMA WAS LEVEL AND WBND. I STEEPENED THE BANK TO ABOUT 50 DEG AND SMA PASSED ON OUR LEFT SIDE. AFTER CONVERSING WITH TWR IT APPEARS THAT THE TWR CTLR WAS CONFUSED BY WHAT HE PERCEIVED AS A LEFT BANK AS WE CLBED OUT PROMPTING THE QUESTION ABOUT OUR ON COURSE HDG WHICH HE THOUGHT (CORRECTLY) WOULD BE A RIGHT TURN. HE INTERPRETED COPLT'S '284' AS 140 AND PROCEEDED TO ISSUE TFC TO THE SE. HE ALSO DIDN'T ADVISE GREEN BAY OF THE SMA HE HAD JUST DEPARTED TO THE W SINCE HE APPARENTLY THOUGHT WE WERE GOING TO MSP ON A 140 DEG HDG!? GREEN BAY CTLR DIDN'T HEAR THE COPLT'S SUGGESTION OF VFR CLB ALTHOUGH TWR MONITORING THE FREQ HEARD IT VERY CLRLY. GREEN BAY HAD ONE CTLR ON 3 FREQS WHICH SEEMS LIKE OVERLOAD. WE COULD HAVE CONTINUED 4000 FPM CLB AND BEEN THROUGH THE TFC AND INTO SMOOTH, LESS CONGESTED AIRSPACE INSTEAD OF BUMPING ALONG AT 3000 FOR 20 MI.

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.