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Very close near midair collision when NORDO small aircraft crosses final approach course at mdw at night.
| Attributes | |
| ACN | 96440 |
| Time | |
| Date | 198810 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : mdw |
| State Reference | IL |
| Altitude | agl bound lower : 1500 agl bound upper : 1500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : mdw artcc : zjx |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Flight Phase | cruise other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 175 flight time total : 7000 flight time type : 4000 |
| ASRS Report | 96440 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 7000 flight time type : 1000 |
| ASRS Report | 96444 |
| Events | |
| Anomaly | conflict : nmac non adherence : far other anomaly other other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 150 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Turning right final on visual approach 13R at mdw, PIC noticed light co-altitude, constant bearing at 11 O'clock. PIC increased bank smoothly to beyond 30 degree as white landing light began to take shape attached to an small aircraft headed approximately other direction. Small aircraft passed co-altitude, under left wing/belly of medium large transport. We were in 40 degree right bank. Distance approximately 150' or less. If medium large transport did not see and avoid this other aircraft there would have been collision on centerline runway 13R about 2 1/2 mi out. Maneuver capability of medium large transport just within limits to miss him as it was. Due to storms approximately 20 mi west, and the little illumination of small aircraft's light, it was very fortunate that he was seen. Aircraft was so close that PIC saw silhouette of aircraft. His lights were very dim. This small aircraft was not talking, squawking, seen or heard by tower, nor looking. He was an endangerment to over 60 people. If not for extraordinary luck, he would have not been seen, and therefore been hit. Tower reported that this aircraft had a student pilot, with radio difficulty, solo, and at wrong airport.
Original NASA ASRS Text
Title: VERY CLOSE NMAC WHEN NORDO SMA CROSSES FINAL APCH COURSE AT MDW AT NIGHT.
Narrative: TURNING R FINAL ON VISUAL APCH 13R AT MDW, PIC NOTICED LIGHT CO-ALT, CONSTANT BEARING AT 11 O'CLOCK. PIC INCREASED BANK SMOOTHLY TO BEYOND 30 DEG AS WHITE LNDG LIGHT BEGAN TO TAKE SHAPE ATTACHED TO AN SMA HEADED APPROX OTHER DIRECTION. SMA PASSED CO-ALT, UNDER L WING/BELLY OF MLG. WE WERE IN 40 DEG R BANK. DISTANCE APPROX 150' OR LESS. IF MLG DID NOT SEE AND AVOID THIS OTHER ACFT THERE WOULD HAVE BEEN COLLISION ON CENTERLINE RWY 13R ABOUT 2 1/2 MI OUT. MANEUVER CAPABILITY OF MLG JUST WITHIN LIMITS TO MISS HIM AS IT WAS. DUE TO STORMS APPROX 20 MI W, AND THE LITTLE ILLUMINATION OF SMA'S LIGHT, IT WAS VERY FORTUNATE THAT HE WAS SEEN. ACFT WAS SO CLOSE THAT PIC SAW SILHOUETTE OF ACFT. HIS LIGHTS WERE VERY DIM. THIS SMA WAS NOT TALKING, SQUAWKING, SEEN OR HEARD BY TWR, NOR LOOKING. HE WAS AN ENDANGERMENT TO OVER 60 PEOPLE. IF NOT FOR EXTRAORDINARY LUCK, HE WOULD HAVE NOT BEEN SEEN, AND THEREFORE BEEN HIT. TWR RPTED THAT THIS ACFT HAD A STUDENT PLT, WITH RADIO DIFFICULTY, SOLO, AND AT WRONG ARPT.
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.