Near midair collision.

Attributes
ACN	182984
Time
Date	199107
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mdw
State Reference	IL
Altitude	agl bound lower : 300 agl bound upper : 500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mdw
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent : approach
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	descent : approach other
Route In Use	approach : visual
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 17000 flight time type : 12000
ASRS Report	182984
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : nmac non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	faa : investigated
Miss Distance	horizontal : 100 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were flight cle/mdw at 500-300' AGL on short final. I, the captain, was the PNF, monitoring the PF's performance and landing noticed the small aircraft Y at our altitude and in our 10 O'clock position. He was intersecting our course to the runway we were cleared to land on. The small aircraft had been given instructions to fly overhead the airport from the south and make right hand traffic for runway 22R. He somehow found himself overhead the tower and to the northeast of the tower. This is where I found him and not having been given this traffic, I was very surprised to note the collision course. He did not seem to be maneuvering to avoid this course. He was headed wnw. The best course of action was to continue and land as we did. I made a subsequent visit to the tower and discussed this occurrence with the controller at the time a mr X. A similar report has been sent to my company and I believe this matter is under investigation by the FAA.

Original NASA ASRS Text

Title: NMAC.

Narrative: WE WERE FLT CLE/MDW AT 500-300' AGL ON SHORT FINAL. I, THE CAPT, WAS THE PNF, MONITORING THE PF'S PERFORMANCE AND LNDG NOTICED THE SMA Y AT OUR ALT AND IN OUR 10 O'CLOCK POS. HE WAS INTERSECTING OUR COURSE TO THE RWY WE WERE CLRED TO LAND ON. THE SMA HAD BEEN GIVEN INSTRUCTIONS TO FLY OVERHEAD THE ARPT FROM THE S AND MAKE R HAND TFC FOR RWY 22R. HE SOMEHOW FOUND HIMSELF OVERHEAD THE TWR AND TO THE NE OF THE TWR. THIS IS WHERE I FOUND HIM AND NOT HAVING BEEN GIVEN THIS TFC, I WAS VERY SURPRISED TO NOTE THE COLLISION COURSE. HE DID NOT SEEM TO BE MANEUVERING TO AVOID THIS COURSE. HE WAS HEADED WNW. THE BEST COURSE OF ACTION WAS TO CONTINUE AND LAND AS WE DID. I MADE A SUBSEQUENT VISIT TO THE TWR AND DISCUSSED THIS OCCURRENCE WITH THE CTLR AT THE TIME A MR X. A SIMILAR RPT HAS BEEN SENT TO MY COMPANY AND I BELIEVE THIS MATTER IS UNDER INVESTIGATION BY THE FAA.

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.