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Air carrier X TCASII RA from VFR aircraft. Unauthorized climb through occupied altitude. See and avoid concept.
| Attributes | |
| ACN | 247282 |
| Time | |
| Date | 199305 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : ord |
| State Reference | IL |
| Altitude | msl bound lower : 7000 msl bound upper : 7500 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ord |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | other personnel other |
| Qualification | controller : radar |
| ASRS Report | 247282 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 6 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 6000 vertical : 200 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Altitude deviation of 700 ft. Air carrier X issued traffic at 7500 ft. TCASII issued climb RA to air carrier X which he followed. This put him in a closer proximity to VFR aircraft Y. TCASII RA in this instance, put air carrier X in closer proximity to VFR than if he had followed ATC instructions.
Original NASA ASRS Text
Title: ACR X TCASII RA FROM VFR ACFT. UNAUTH CLB THROUGH OCCUPIED ALT. SEE AND AVOID CONCEPT.
Narrative: ALTDEV OF 700 FT. ACR X ISSUED TFC AT 7500 FT. TCASII ISSUED CLB RA TO ACR X WHICH HE FOLLOWED. THIS PUT HIM IN A CLOSER PROX TO VFR ACFT Y. TCASII RA IN THIS INSTANCE, PUT ACR X IN CLOSER PROX TO VFR THAN IF HE HAD FOLLOWED ATC INSTRUCTIONS.
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.