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Reporter aircraft on approach and intruder aircraft instructed to maintain visual with reporter, but commences to descend on top of reporter aircraft and reporter had to take evasive action. Apparently the intruder aircraft either lost visual contact with reporter or perhaps idented another aircraft as reporter's. Regardless, intruder put both aircraft in dangerous situation.
| Attributes | |
| ACN | 327852 |
| Time | |
| Date | 199602 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : hpn |
| State Reference | NY |
| Altitude | msl bound lower : 1800 msl bound upper : 1800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90 artcc : lax |
| Operator | general aviation : corporate |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : commercial pilot : flight engineer pilot : atp pilot : instrument |
| Experience | flight time last 90 days : 75 flight time total : 8400 flight time type : 3500 |
| ASRS Report | 327852 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : nmac other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 20 vertical : 100 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Ny approach working multiple aircraft. Some going to hpn some transiting area. Some VFR for advisories, some on IFR plans to hpn. Incident in question had us being vectored then cleared from base to final for visual. VFR aircraft told to stay at 500 ft above us until he had visual with us. Once said aircraft called visual with us, ATC released him to descend keeping us in sight. It was night, good visibility but he descended crossing final approach path for active runway in front to nearly on top of us. Probably lost contact but continued to descend. Very close call! We increased our rate of descent and were out of 1800 ft descending, gear and flaps down below GS. ATC should not allow VFR aircraft to descend especially at night in near proximity to final approach path to active runway. That airspace and aircraft are 'critical phase.' too much going on too close to the ground.
Original NASA ASRS Text
Title: RPTR ACFT ON APCH AND INTRUDER ACFT INSTRUCTED TO MAINTAIN VISUAL WITH RPTR, BUT COMMENCES TO DSND ON TOP OF RPTR ACFT AND RPTR HAD TO TAKE EVASIVE ACTION. APPARENTLY THE INTRUDER ACFT EITHER LOST VISUAL CONTACT WITH RPTR OR PERHAPS IDENTED ANOTHER ACFT AS RPTR'S. REGARDLESS, INTRUDER PUT BOTH ACFT IN DANGEROUS SIT.
Narrative: NY APCH WORKING MULTIPLE ACFT. SOME GOING TO HPN SOME TRANSITING AREA. SOME VFR FOR ADVISORIES, SOME ON IFR PLANS TO HPN. INCIDENT IN QUESTION HAD US BEING VECTORED THEN CLRED FROM BASE TO FINAL FOR VISUAL. VFR ACFT TOLD TO STAY AT 500 FT ABOVE US UNTIL HE HAD VISUAL WITH US. ONCE SAID ACFT CALLED VISUAL WITH US, ATC RELEASED HIM TO DSND KEEPING US IN SIGHT. IT WAS NIGHT, GOOD VISIBILITY BUT HE DSNDED XING FINAL APCH PATH FOR ACTIVE RWY IN FRONT TO NEARLY ON TOP OF US. PROBABLY LOST CONTACT BUT CONTINUED TO DSND. VERY CLOSE CALL! WE INCREASED OUR RATE OF DSCNT AND WERE OUT OF 1800 FT DSNDING, GEAR AND FLAPS DOWN BELOW GS. ATC SHOULD NOT ALLOW VFR ACFT TO DSND ESPECIALLY AT NIGHT IN NEAR PROX TO FINAL APCH PATH TO ACTIVE RWY. THAT AIRSPACE AND ACFT ARE 'CRITICAL PHASE.' TOO MUCH GOING ON TOO CLOSE TO THE GND.
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.