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Aircraft on vector to airport for a visual approach with another aircraft on a visual approach to parallel runway. Pilot reports traffic and airport in sight. Controller forgot to issue clearance. Aircraft passed behind and above other aircraft with less than standard separation.
| Attributes | |
| ACN | 159375 |
| Time | |
| Date | 199010 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : sfo |
| State Reference | CA |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : oak |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Route In Use | arrival other enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent other |
| Route In Use | approach : straight in approach : visual arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 11000 flight time type : 950 |
| ASRS Report | 159375 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | horizontal : 1000 vertical : 500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Big sur arrival to sfo flown to 330 degree heading. Approach assigned heading and speed at 4000', then advised us about traffic for runway 20R, an medium large transport Y, and asked if we had the airport in sight. We advised the medium large transport Y and airport in sight. No visibility or approach clearance given. As we approached the centerline of runway 28L approach frequency was busy with clearance to aircraft behind us for visibility approach to left (runway 28L). As we crossed centerline of runway 28R above and behind medium large transport Y on approach to runway 28R we asked approach controller what they wanted us to do and clearance for visibility to runway 28L was issued.
Original NASA ASRS Text
Title: ACFT ON VECTOR TO ARPT FOR A VISUAL APCH WITH ANOTHER ACFT ON A VISUAL APCH TO PARALLEL RWY. PLT REPORTS TRAFFIC AND ARPT IN SIGHT. CTLR FORGOT TO ISSUE CLRNC. ACFT PASSED BEHIND AND ABOVE OTHER ACFT WITH LESS THAN STANDARD SEPARATION.
Narrative: BIG SUR ARR TO SFO FLOWN TO 330 DEG HDG. APCH ASSIGNED HDG AND SPD AT 4000', THEN ADVISED US ABOUT TFC FOR RWY 20R, AN MLG Y, AND ASKED IF WE HAD THE ARPT IN SIGHT. WE ADVISED THE MLG Y AND ARPT IN SIGHT. NO VIS OR APCH CLRNC GIVEN. AS WE APCHED THE CENTERLINE OF RWY 28L APCH FREQ WAS BUSY WITH CLRNC TO ACFT BEHIND US FOR VIS APCH TO LEFT (RWY 28L). AS WE CROSSED CENTERLINE OF RWY 28R ABOVE AND BEHIND MLG Y ON APCH TO RWY 28R WE ASKED APCH CTLR WHAT THEY WANTED US TO DO AND CLRNC FOR VIS TO RWY 28L WAS ISSUED.
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.