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Near midair collision. First officer of an MU3, took evasive action by rolling left to avoid an small aircraft sel katana. They passed by 200 ft laterally at the same altitude. The other aircraft may not have been operating a transponder since approach control did not show the aircraft and the reporter's TCASII had not given any alert either.
| Attributes | |
| ACN | 404872 |
| Time | |
| Date | 199806 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : isp |
| State Reference | NY |
| Altitude | msl bound lower : 2700 msl bound upper : 2700 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90 |
| Operator | common carrier : air taxi |
| Make Model Name | MU-300 Diamond 1/1A |
| Operating Under FAR Part | Part 135 |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Person 1 | |
| Affiliation | company : air taxi |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 6400 flight time type : 125 |
| ASRS Report | 404872 |
| Person 2 | |
| Affiliation | company : air taxi |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : nmac non adherence : far other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 200 vertical : 0 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
Narrative:
While on a visual approach to isp, descending about 2700 ft while in contact with approach control, the copilot, who was flying, rolled the aircraft about 30 degrees left and stated he rolled to avoid a conflict with another aircraft thought to be a katana. Approach control never mentioned the traffic. Both of us had our eyes outside the aircraft, scanning for traffic. Possibly the reason the approach controller did not point out the traffic was no transponder in the katana. I believe that TCASII should be required in all turbine aircraft, especially those operated under far 135. TCASII would have aided us greatly and allowed us to see the katana. Also it seems that if the katana was not seen because of a lack of transponder, it should be required to have an operating transponder in larger varieties of airspace.
Original NASA ASRS Text
Title: NMAC. FO OF AN MU3, TOOK EVASIVE ACTION BY ROLLING L TO AVOID AN SMA SEL KATANA. THEY PASSED BY 200 FT LATERALLY AT THE SAME ALT. THE OTHER ACFT MAY NOT HAVE BEEN OPERATING A XPONDER SINCE APCH CTL DID NOT SHOW THE ACFT AND THE RPTR'S TCASII HAD NOT GIVEN ANY ALERT EITHER.
Narrative: WHILE ON A VISUAL APCH TO ISP, DSNDING ABOUT 2700 FT WHILE IN CONTACT WITH APCH CTL, THE COPLT, WHO WAS FLYING, ROLLED THE ACFT ABOUT 30 DEGS L AND STATED HE ROLLED TO AVOID A CONFLICT WITH ANOTHER ACFT THOUGHT TO BE A KATANA. APCH CTL NEVER MENTIONED THE TFC. BOTH OF US HAD OUR EYES OUTSIDE THE ACFT, SCANNING FOR TFC. POSSIBLY THE REASON THE APCH CTLR DID NOT POINT OUT THE TFC WAS NO XPONDER IN THE KATANA. I BELIEVE THAT TCASII SHOULD BE REQUIRED IN ALL TURBINE ACFT, ESPECIALLY THOSE OPERATED UNDER FAR 135. TCASII WOULD HAVE AIDED US GREATLY AND ALLOWED US TO SEE THE KATANA. ALSO IT SEEMS THAT IF THE KATANA WAS NOT SEEN BECAUSE OF A LACK OF XPONDER, IT SHOULD BE REQUIRED TO HAVE AN OPERATING XPONDER IN LARGER VARIETIES OF AIRSPACE.
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.