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An medium large transport aircraft cruises into an N90, ny, area and encounters an near midair collision. Flight crew feels TCASII warning gave them only chance of avoiding any conflict. Evasive action had to be used.
| Attributes | |
| ACN | 375386 |
| Time | |
| Date | 199707 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : mmu |
| State Reference | NJ |
| Altitude | msl bound lower : 5000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90 |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other descent : approach |
| Route In Use | enroute : on vectors |
| 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 carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : cfi pilot : instrument pilot : flight engineer |
| Experience | flight time last 90 days : 240 flight time total : 9800 flight time type : 6400 |
| ASRS Report | 375386 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : nmac non adherence : far other anomaly other other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
Narrative:
I strongly feel that TCASII saved us from a midair collision. We had no other warning. Visibility, although VFR was very hazy and difficult to see other traffic. The other aircraft, a small southeast, apparently had his transponder off or intermittent. He did not appear on TRACON radar or TCASII until approximately 3.5 mi ahead at 12 O'clock position.
Original NASA ASRS Text
Title: AN MLG ACFT CRUISES INTO AN N90, NY, AREA AND ENCOUNTERS AN NMAC. FLC FEELS TCASII WARNING GAVE THEM ONLY CHANCE OF AVOIDING ANY CONFLICT. EVASIVE ACTION HAD TO BE USED.
Narrative: I STRONGLY FEEL THAT TCASII SAVED US FROM A MIDAIR COLLISION. WE HAD NO OTHER WARNING. VISIBILITY, ALTHOUGH VFR WAS VERY HAZY AND DIFFICULT TO SEE OTHER TFC. THE OTHER ACFT, A SMALL SE, APPARENTLY HAD HIS XPONDER OFF OR INTERMITTENT. HE DID NOT APPEAR ON TRACON RADAR OR TCASII UNTIL APPROX 3.5 MI AHEAD AT 12 O'CLOCK POS.
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.