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Flight crew of SF34 responded to TCASII RA due to scud running BE35 searching for holes flying through approach course to apn ILS runway 1.
| Attributes | |
| ACN | 589324 |
| Time | |
| Date | 200308 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : apn.airport |
| State Reference | MI |
| Altitude | msl single value : 3500 |
| Environment | |
| Flight Conditions | Marginal |
| Weather Elements | Thunderstorm other |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zmp.artcc tower : mdw.tower |
| Operator | common carrier : air carrier |
| Make Model Name | SF 340B |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : 1 |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument precision |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Bonanza 33 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : takeoff climbout : initial |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : cfi pilot : instrument pilot : multi engine |
| Experience | flight time last 90 days : 114 flight time total : 1600 flight time type : 560 |
| ASRS Report | 589324 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : nmac inflight encounter : vfr in imc |
| Independent Detector | aircraft equipment : tcas other flight crewa |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Environmental Factor Aircraft |
| Primary Problem | Flight Crew Human Performance |
Narrative:
About 10 mi from the apn VOR on TCASII picked up an unidented target at our altitude. When we were about 5 mi northwest of the apn VOR the target was heading straight for us at our altitude. The captain and I both prepared for an RA. The captain and I could not pick up the target visually because we were between layers in very poor visibility. We then got an RA to climb. The captain saw the bonanza as we passed it and later stated that it was a very close near miss and he was fairly certain that we would have collided with the aircraft if we did not have the TCASII RA. After the near miss when we were inbound on the ILS runway 1 to apn on the CTAF frequency, a business jet waiting for IFR clearance on the ground at apn warned us that the traffic that we had a near miss with was still hanging around the airport at 3500 ft. Almost immediately after that transmission another aircraft called and asked us how the WX was where we were. He stated he was over the apn airport trying to find a hole to come down through. The WX was reporting 500 ft overcast and 4 SM in mist. There were several layers of clouds with generally poor visibility in the layers. We told the gentleman flying that there were no holes in the area and asked if he had seen the red saab. He said that he had not seen us until we passed him. Once on the ground at apn we gave ATC the tail number of the bonanza and told ZMP that he was not talking to anyone. The business jet then got on CTAF and told the bonanza that they were not going to depart apn until he cleared out of the area. Factors include: 1) private pilot's decision to continue into very marginal WX conditions without any type of flight plan. 2) non radar environment below about 6000 ft in the area. 3) WX conditions. It was very questionable if VFR conditions exited at the time. 4) TCASII. Both the captain and I are fairly certain that we would have had a midair collision if TCASII was not installed and working in the aircraft.
Original NASA ASRS Text
Title: FLT CREW OF SF34 RESPONDED TO TCASII RA DUE TO SCUD RUNNING BE35 SEARCHING FOR HOLES FLYING THROUGH APCH COURSE TO APN ILS RWY 1.
Narrative: ABOUT 10 MI FROM THE APN VOR ON TCASII PICKED UP AN UNIDENTED TARGET AT OUR ALT. WHEN WE WERE ABOUT 5 MI NW OF THE APN VOR THE TARGET WAS HEADING STRAIGHT FOR US AT OUR ALT. THE CAPT AND I BOTH PREPARED FOR AN RA. THE CAPT AND I COULD NOT PICK UP THE TARGET VISUALLY BECAUSE WE WERE BTWN LAYERS IN VERY POOR VISIBILITY. WE THEN GOT AN RA TO CLB. THE CAPT SAW THE BONANZA AS WE PASSED IT AND LATER STATED THAT IT WAS A VERY CLOSE NEAR MISS AND HE WAS FAIRLY CERTAIN THAT WE WOULD HAVE COLLIDED WITH THE ACFT IF WE DID NOT HAVE THE TCASII RA. AFTER THE NEAR MISS WHEN WE WERE INBOUND ON THE ILS RWY 1 TO APN ON THE CTAF FREQ, A BUSINESS JET WAITING FOR IFR CLRNC ON THE GND AT APN WARNED US THAT THE TFC THAT WE HAD A NEAR MISS WITH WAS STILL HANGING AROUND THE ARPT AT 3500 FT. ALMOST IMMEDIATELY AFTER THAT XMISSION ANOTHER ACFT CALLED AND ASKED US HOW THE WX WAS WHERE WE WERE. HE STATED HE WAS OVER THE APN ARPT TRYING TO FIND A HOLE TO COME DOWN THROUGH. THE WX WAS RPTING 500 FT OVCST AND 4 SM IN MIST. THERE WERE SEVERAL LAYERS OF CLOUDS WITH GENERALLY POOR VISIBILITY IN THE LAYERS. WE TOLD THE GENTLEMAN FLYING THAT THERE WERE NO HOLES IN THE AREA AND ASKED IF HE HAD SEEN THE RED SAAB. HE SAID THAT HE HAD NOT SEEN US UNTIL WE PASSED HIM. ONCE ON THE GND AT APN WE GAVE ATC THE TAIL NUMBER OF THE BONANZA AND TOLD ZMP THAT HE WAS NOT TALKING TO ANYONE. THE BUSINESS JET THEN GOT ON CTAF AND TOLD THE BONANZA THAT THEY WERE NOT GOING TO DEPART APN UNTIL HE CLRED OUT OF THE AREA. FACTORS INCLUDE: 1) PVT PLT'S DECISION TO CONTINUE INTO VERY MARGINAL WX CONDITIONS WITHOUT ANY TYPE OF FLT PLAN. 2) NON RADAR ENVIRONMENT BELOW ABOUT 6000 FT IN THE AREA. 3) WX CONDITIONS. IT WAS VERY QUESTIONABLE IF VFR CONDITIONS EXITED AT THE TIME. 4) TCASII. BOTH THE CAPT AND I ARE FAIRLY CERTAIN THAT WE WOULD HAVE HAD A MIDAIR COLLISION IF TCASII WAS NOT INSTALLED AND WORKING IN THE ACFT.
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.