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Air carrier X TCASII TA RA descend had conflict with air carrier Y. Evasive action taken. See and avoid concept. Visual separation.
| Attributes | |
| ACN | 214605 |
| Time | |
| Date | 199206 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : lga |
| State Reference | NY |
| Altitude | msl bound lower : 1500 msl bound upper : 1500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90 tower : lga |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, High Wing, 2 Turboprop Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure sid : sid |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | approach : visual |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 213 flight time total : 2410 flight time type : 289 |
| ASRS Report | 214605 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 1500 vertical : 300 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
Air carrier X having departed runway 13, I plted through the whitestone climb. Upon turning to 040 degree heading (which takes us across the runway 13 extended centerline) the TCASII TA/RA'ed us to descend 1500 FPM. We immediately complied and looked at 9 O'clock to see a frontal view of air carrier Y in a climb on a collision course. Air carrier Y did not give any evasive action. Lga ATC released air carrier Y VFR which departed runway 13 straight out. The nature of the environment: lga TCA, and the irregularity of a VFR airline departure mixed with an IFR SID departure did not mix. Only the TCASII TA/RA brought the imminent conflict to our attention. After the situation was resolved, lga departure said that the tower had us both in sight. This further complicates the matter because why would ATC clear a VFR aircraft to fly across an active IFR SID! Immediate action to follow the TCASII RA was highly critical in the successful evasion of a midair collision. The evasive action was enough to be noticeable to the flight attendant and passenger.
Original NASA ASRS Text
Title: ACR X TCASII TA RA DSND HAD CONFLICT WITH ACR Y. EVASIVE ACTION TAKEN. SEE AND AVOID CONCEPT. VISUAL SEPARATION.
Narrative: ACR X HAVING DEPARTED RWY 13, I PLTED THROUGH THE WHITESTONE CLB. UPON TURNING TO 040 DEG HDG (WHICH TAKES US ACROSS THE RWY 13 EXTENDED CTRLINE) THE TCASII TA/RA'ED US TO DSND 1500 FPM. WE IMMEDIATELY COMPLIED AND LOOKED AT 9 O'CLOCK TO SEE A FRONTAL VIEW OF ACR Y IN A CLB ON A COLLISION COURSE. ACR Y DID NOT GIVE ANY EVASIVE ACTION. LGA ATC RELEASED ACR Y VFR WHICH DEPARTED RWY 13 STRAIGHT OUT. THE NATURE OF THE ENVIRONMENT: LGA TCA, AND THE IRREGULARITY OF A VFR AIRLINE DEP MIXED WITH AN IFR SID DEP DID NOT MIX. ONLY THE TCASII TA/RA BROUGHT THE IMMINENT CONFLICT TO OUR ATTN. AFTER THE SITUATION WAS RESOLVED, LGA DEP SAID THAT THE TWR HAD US BOTH IN SIGHT. THIS FURTHER COMPLICATES THE MATTER BECAUSE WHY WOULD ATC CLR A VFR ACFT TO FLY ACROSS AN ACTIVE IFR SID! IMMEDIATE ACTION TO FOLLOW THE TCASII RA WAS HIGHLY CRITICAL IN THE SUCCESSFUL EVASION OF A MIDAIR COLLISION. THE EVASIVE ACTION WAS ENOUGH TO BE NOTICEABLE TO THE FLT ATTENDANT AND PAX.
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.