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Altitude deviation altitude excursion during flight crew response to TCASII RA in evasive action descent.
| Attributes | |
| ACN | 216792 |
| Time | |
| Date | 199207 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : isp |
| State Reference | NY |
| Altitude | msl bound lower : 2600 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90 |
| 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 enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 6500 flight time type : 120 |
| ASRS Report | 216792 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 175 flight time total : 2500 flight time type : 200 |
| ASRS Report | 216693 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action other |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 0 vertical : 900 |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
Level at 3000 ft while being vectored for a visual approach to runway 24 at islip airport our TCASII showed an aircraft at 12 O'clock and 500 ft above us. The TCASII issued an RA and commanded us to descend. We went down to approximately 2600 ft and advised ATC of our actions. ATC advised us he showed no traffic. Soon after, the TCASII indicated the conflicting aircraft had passed over us. We never visually saw the aircraft.
Original NASA ASRS Text
Title: ALTDEV ALT EXCURSION DURING FLC RESPONSE TO TCASII RA IN EVASIVE ACTION DSCNT.
Narrative: LEVEL AT 3000 FT WHILE BEING VECTORED FOR A VISUAL APCH TO RWY 24 AT ISLIP ARPT OUR TCASII SHOWED AN ACFT AT 12 O'CLOCK AND 500 FT ABOVE US. THE TCASII ISSUED AN RA AND COMMANDED US TO DSND. WE WENT DOWN TO APPROX 2600 FT AND ADVISED ATC OF OUR ACTIONS. ATC ADVISED US HE SHOWED NO TFC. SOON AFTER, THE TCASII INDICATED THE CONFLICTING ACFT HAD PASSED OVER US. WE NEVER VISUALLY SAW 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.