 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A descending B757-200 flight crew fails to maintain visual separation from a climbing air carrier flight 15 mi east of kayoh intersection on frequency with sct, ca
| Attributes | |
| ACN | 487761 |
| Time | |
| Date | 200010 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | intersection : kayoh |
| State Reference | CA |
| Altitude | msl bound lower : 8500 msl bound upper : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : sct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : vacating altitude |
| Route In Use | arrival star : eastside |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : sct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 110 flight time total : 7000 flight time type : 1800 |
| ASRS Report | 487761 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 190 flight time total : 12000 flight time type : 1300 |
| ASRS Report | 488116 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : clearance non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | aircraft equipment : tcas other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Miss Distance | horizontal : 6000 vertical : 600 |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance Airspace Structure |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were at 10000 ft MSL on STAR into sna, requested descent and were given traffic at 1 O'clock position, 9 mi. I stated 'in sight.' approach control asked if we could maintain visual separation. We said 'yes,' and were given descent to 7000 ft. The other carrier asked about our separation during our descent. Approach control stated we were maintaining visual, then issued climb to 14000 ft for them (from 9000 ft). They appeared clear to us and I resumed my scan inside on instruments and forward. With the other aircraft behind our wing line, out of our sight, their radio call of 'descending on RA' (from TCASII) signaled a maneuver on their part. In the future, I will remain on IFR separation during dusk or night operations to give added assurance of separation to all parties. Supplemental information from acn 488116: in descent to 7000 ft received RA, increased rate of descent, traffic in sight at all times.
Original NASA ASRS Text
Title: A DSNDING B757-200 FLC FAILS TO MAINTAIN VISUAL SEPARATION FROM A CLBING ACR FLT 15 MI E OF KAYOH INTXN ON FREQ WITH SCT, CA
Narrative: WE WERE AT 10000 FT MSL ON STAR INTO SNA, REQUESTED DSCNT AND WERE GIVEN TFC AT 1 O'CLOCK POS, 9 MI. I STATED 'IN SIGHT.' APCH CTL ASKED IF WE COULD MAINTAIN VISUAL SEPARATION. WE SAID 'YES,' AND WERE GIVEN DSCNT TO 7000 FT. THE OTHER CARRIER ASKED ABOUT OUR SEPARATION DURING OUR DSCNT. APCH CTL STATED WE WERE MAINTAINING VISUAL, THEN ISSUED CLB TO 14000 FT FOR THEM (FROM 9000 FT). THEY APPEARED CLR TO US AND I RESUMED MY SCAN INSIDE ON INSTS AND FORWARD. WITH THE OTHER ACFT BEHIND OUR WING LINE, OUT OF OUR SIGHT, THEIR RADIO CALL OF 'DSNDING ON RA' (FROM TCASII) SIGNALED A MANEUVER ON THEIR PART. IN THE FUTURE, I WILL REMAIN ON IFR SEPARATION DURING DUSK OR NIGHT OPS TO GIVE ADDED ASSURANCE OF SEPARATION TO ALL PARTIES. SUPPLEMENTAL INFO FROM ACN 488116: IN DSCNT TO 7000 FT RECEIVED RA, INCREASED RATE OF DSCNT, TFC IN SIGHT AT ALL TIMES.
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.