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Air carrier X TCASII RA same altitude assigned had less than standard separation from cpr Y non adherence to ATC instruction. Evasive action taken.
| Attributes | |
| ACN | 257617 |
| Time | |
| Date | 199311 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : abe |
| State Reference | PA |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : ykm |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, High Wing, 2 Turboprop Eng |
| Flight Phase | cruise other |
| Route In Use | enroute : direct enroute airway : abe |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : corporate |
| Make Model Name | Light Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| ASRS Report | 257617 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : clearance non adherence : published procedure non adherence : required legal separation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance flight crew : returned to intended course or assigned course other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 12000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X was swbound on an IFR flight to phl. Cpr Y was nebound on an IFR flight. Both aircraft were at 4000 ft. Cpr Y was issued a turn to avoid the traffic. Cpr Y took 3 xmissions before responding. Air carrier X responded to a turn. Air carrier X also responded to a TCASII alert.
Original NASA ASRS Text
Title: ACR X TCASII RA SAME ALT ASSIGNED HAD LTSS FROM CPR Y NON ADHERENCE TO ATC INSTRUCTION. EVASIVE ACTION TAKEN.
Narrative: ACR X WAS SWBOUND ON AN IFR FLT TO PHL. CPR Y WAS NEBOUND ON AN IFR FLT. BOTH ACFT WERE AT 4000 FT. CPR Y WAS ISSUED A TURN TO AVOID THE TFC. CPR Y TOOK 3 XMISSIONS BEFORE RESPONDING. ACR X RESPONDED TO A TURN. ACR X ALSO RESPONDED TO A TCASII ALERT.
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.