 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Air carrier X TCASII RA evasive action taken climb from air carrier Y. Non adherence to ATC clearance. Pilot deviation.
| Attributes | |
| ACN | 260138 |
| Time | |
| Date | 199401 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : sea |
| State Reference | WA |
| Altitude | msl bound lower : 10000 msl bound upper : 10400 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : sea tower : ord |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | arrival star : star |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller military : 4 controller radar : 11 |
| ASRS Report | 260138 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : undershoot 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 : 0 vertical : 1600 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Air carrier X inbound to sea on olm 1 STAR descending to 10000 ft. Air carrier Y departed sea, on vectors to join J-523 west of sea, climbing to 9000 ft. Developmental issued the climbing air carrier Y as traffic to the descending air carrier X as 'traffic 1 O'clock 5 mi climbing out of 8600 ft to 9000 ft.' the descending air carrier X asked for the other aircraft's altitude and was told out of 8600 ft to 9000 ft. The descending air carrier X said he had the other aircraft in sight but that he had received TCASII RA. (The aircraft had climbed to 10400 ft). TCASII took a positively separated situation and caused a pilot deviation. I understand there is a new logic software available (or being tested) that will prevent bump ups. This is vital in the terminal area.
Original NASA ASRS Text
Title: ACR X TCASII RA EVASIVE ACTION TAKEN CLB FROM ACR Y. NON ADHERENCE TO ATC CLRNC. PLTDEV.
Narrative: ACR X INBOUND TO SEA ON OLM 1 STAR DSNDING TO 10000 FT. ACR Y DEPARTED SEA, ON VECTORS TO JOIN J-523 W OF SEA, CLBING TO 9000 FT. DEVELOPMENTAL ISSUED THE CLBING ACR Y AS TFC TO THE DSNDING ACR X AS 'TFC 1 O'CLOCK 5 MI CLBING OUT OF 8600 FT TO 9000 FT.' THE DSNDING ACR X ASKED FOR THE OTHER ACFT'S ALT AND WAS TOLD OUT OF 8600 FT TO 9000 FT. THE DSNDING ACR X SAID HE HAD THE OTHER ACFT IN SIGHT BUT THAT HE HAD RECEIVED TCASII RA. (THE ACFT HAD CLBED TO 10400 FT). TCASII TOOK A POSITIVELY SEPARATED SIT AND CAUSED A PLTDEV. I UNDERSTAND THERE IS A NEW LOGIC SOFTWARE AVAILABLE (OR BEING TESTED) THAT WILL PREVENT BUMP UPS. THIS IS VITAL IN THE TERMINAL AREA.
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.