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Operational error less than standard separation between climbing air carrier DC10 and descending air carrier FK28. On opposite direction courses.
| Attributes | |
| ACN | 382147 |
| Time | |
| Date | 199710 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : sea |
| State Reference | WA |
| Altitude | msl bound lower : 12000 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : sea |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 30 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other enroute airway : sea |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | F28 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 20000 flight time type : 250 |
| ASRS Report | 382147 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | horizontal : 15000 vertical : 700 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Climbing through approximately 11000 ft heading 070 degrees on J70, received TCASII TA. Traffic appeared at 1 O'clock edge of screen 1700 ft above and descending head-on to us. Our climb rate approximately 2000 FPM at approximately 12000 ft, 3-4 mi. As we were questioning ATC about traffic, received TCASII RA 'reduce climb' followed almost immediately by TCASII RA 'descend, descend' with indication (green band) at 1500 FPM down! ATC response 'turn left to 030 degrees.' made 30 degree bank left descending turn at 1500 FPM to approximately 11000 ft. Received 'clear of traffic' and resumed climb. Advised ATC of climb and received 'turn right to 090 degrees and reintercept airway.' questioned ATC about the incident and they replied 'it was a coordination problem.' closest approach on TCASII approximately 2.5 mi horizontal and 700 ft vertical.
Original NASA ASRS Text
Title: OPERROR LTSS BTWN CLBING ACR DC10 AND DSNDING ACR FK28. ON OPPOSITE DIRECTION COURSES.
Narrative: CLBING THROUGH APPROX 11000 FT HDG 070 DEGS ON J70, RECEIVED TCASII TA. TFC APPEARED AT 1 O'CLOCK EDGE OF SCREEN 1700 FT ABOVE AND DSNDING HEAD-ON TO US. OUR CLB RATE APPROX 2000 FPM AT APPROX 12000 FT, 3-4 MI. AS WE WERE QUESTIONING ATC ABOUT TFC, RECEIVED TCASII RA 'REDUCE CLB' FOLLOWED ALMOST IMMEDIATELY BY TCASII RA 'DSND, DSND' WITH INDICATION (GREEN BAND) AT 1500 FPM DOWN! ATC RESPONSE 'TURN L TO 030 DEGS.' MADE 30 DEG BANK L DSNDING TURN AT 1500 FPM TO APPROX 11000 FT. RECEIVED 'CLR OF TFC' AND RESUMED CLB. ADVISED ATC OF CLB AND RECEIVED 'TURN R TO 090 DEGS AND REINTERCEPT AIRWAY.' QUESTIONED ATC ABOUT THE INCIDENT AND THEY REPLIED 'IT WAS A COORD PROB.' CLOSEST APCH ON TCASII APPROX 2.5 MI HORIZ AND 700 FT VERT.
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.