Climbing medium large transport has near midair collision with small transport.

Attributes
ACN	85100
Time
Date	198804
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : mcw
State Reference	IA
Altitude	msl bound lower : 11500 msl bound upper : 11500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zmp
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 230 flight time total : 15000 flight time type : 10000
ASRS Report	85100
Person 2
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 350 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

Shortly after climbing through 10000' and approximately 79 DME south of mcw, and having been cleared to climb to FL230 direct to mcw, center directed us to turn 30 degrees left for our climb. I started a turn to 330 degrees. Turning through approximately 340 degrees the first officer grabbed the controllers and leveled the wings. He then stated that we had just missed another aircraft at our altitude, 11500'. Our altimeter was set at 29.92 as per ATIS dsm. We had aircraft flood and wing lights on. The other aircraft was heading south westerly. The first officer thought it to be white and beige in color. I contacted center with the details of the incident. He stated that they had no traffic on radar. I later asked him why he had given us a 30 degree turn. He stated that it was for crossing traffic. No passenger or crew were injured. Due to high closing speeds and work load on pilots and controllers, we need mandatory transponders now! It is time to make the GA model T ford mentality face up to the 20TH century. Many have died and 80+ more are still here by pure luck. If I can be of help, please feel free to contact me at any time.

Original NASA ASRS Text

Title: CLIMBING MLG HAS NMAC WITH SMT.

Narrative: SHORTLY AFTER CLBING THROUGH 10000' AND APPROX 79 DME S OF MCW, AND HAVING BEEN CLRED TO CLB TO FL230 DIRECT TO MCW, CENTER DIRECTED US TO TURN 30 DEGS LEFT FOR OUR CLB. I STARTED A TURN TO 330 DEGS. TURNING THROUGH APPROX 340 DEGS THE F/O GRABBED THE CTLRS AND LEVELED THE WINGS. HE THEN STATED THAT WE HAD JUST MISSED ANOTHER ACFT AT OUR ALT, 11500'. OUR ALTIMETER WAS SET AT 29.92 AS PER ATIS DSM. WE HAD ACFT FLOOD AND WING LIGHTS ON. THE OTHER ACFT WAS HDG S WESTERLY. THE F/O THOUGHT IT TO BE WHITE AND BEIGE IN COLOR. I CONTACTED CENTER WITH THE DETAILS OF THE INCIDENT. HE STATED THAT THEY HAD NO TFC ON RADAR. I LATER ASKED HIM WHY HE HAD GIVEN US A 30 DEG TURN. HE STATED THAT IT WAS FOR XING TFC. NO PAX OR CREW WERE INJURED. DUE TO HIGH CLOSING SPDS AND WORK LOAD ON PLTS AND CTLRS, WE NEED MANDATORY TRANSPONDERS NOW! IT IS TIME TO MAKE THE GA MODEL T FORD MENTALITY FACE UP TO THE 20TH CENTURY. MANY HAVE DIED AND 80+ MORE ARE STILL HERE BY PURE LUCK. IF I CAN BE OF HELP, PLEASE FEEL FREE TO CONTACT ME AT ANY TIME.

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.