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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Air carrier Y non adherence to ATC clearance had less than standard separation from air carrier X. Pilot deviation. System error.
| Attributes | |
| ACN | 188820 |
| Time | |
| Date | 199109 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : stl |
| State Reference | MO |
| Altitude | msl bound lower : 3300 msl bound upper : 3300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : stl tower : dca |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 190 flight time total : 17000 flight time type : 190 |
| ASRS Report | 188820 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : overshoot conflict : airborne less severe non adherence : clearance non adherence : published procedure non adherence : required legal separation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | faa : investigated faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 4500 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Pilot Deviation Operational Error |
Narrative:
Air carrier X on climb out of stl we had a near miss with an light transport air carrier Y at 3300 ft. TCASII was followed. Other aircraft was told to maintain 3000 ft, but continued climb to 4000 ft. ATC should not have turned us into that aircraft. Callback conversation with reporter revealed the following information: the reporter stated the air carrier Y had been issued as traffic and they had the aircraft in sight. The controller had not instructed them to maintain visual separation from air carrier Y. TCASII gave a TA and then an RA when air carrier Y did not stop at 3000 ft. The reporter called the supervisor at stl and was told a system error was going to be filed because the controller had not used visual separation properly. Supervisor stated the controller had been recently checked out.
Original NASA ASRS Text
Title: ACR Y NON ADHERENCE TO ATC CLRNC HAD LTSS FROM ACR X. PLTDEV. SYS ERROR.
Narrative: ACR X ON CLB OUT OF STL WE HAD A NEAR MISS WITH AN LTT ACR Y AT 3300 FT. TCASII WAS FOLLOWED. OTHER ACFT WAS TOLD TO MAINTAIN 3000 FT, BUT CONTINUED CLB TO 4000 FT. ATC SHOULD NOT HAVE TURNED US INTO THAT ACFT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ACR Y HAD BEEN ISSUED AS TFC AND THEY HAD THE ACFT IN SIGHT. THE CTLR HAD NOT INSTRUCTED THEM TO MAINTAIN VISUAL SEPARATION FROM ACR Y. TCASII GAVE A TA AND THEN AN RA WHEN ACR Y DID NOT STOP AT 3000 FT. THE RPTR CALLED THE SUPVR AT STL AND WAS TOLD A SYS ERROR WAS GOING TO BE FILED BECAUSE THE CTLR HAD NOT USED VISUAL SEPARATION PROPERLY. SUPVR STATED THE CTLR HAD BEEN RECENTLY CHKED OUT.
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.