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Medium large transport has TCASII continuous on parallel approach. Turns off transponder when turning off TCASII.
| Attributes | |
| ACN | 264555 |
| Time | |
| Date | 199402 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sfo |
| State Reference | CA |
| Altitude | msl bound lower : 2000 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : sfo tower : evv |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | approach : visual enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B747 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 200 flight time total : 11000 flight time type : 9000 |
| ASRS Report | 264555 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : atp pilot : commercial |
| Events | |
| Anomaly | non adherence : far non adherence : published procedure other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were turned into final for a visual to 19R at sfo (by bay approach), behind a 747 arriving from the north who was crossing the 19R final for a visual approach to 19L. When both aircraft were aligned on final, we were nearly abreast but slightly ahead of the 747. His aircraft was giving us a continual RA on the TCASII. I was flying the aircraft and I reached over to turn off the TCASII. I inadvertently turned the transponder off as well. On the ground, I was asked to contact the tower supervisor, which I did -- and I explained to him what had happened.
Original NASA ASRS Text
Title: MLG HAS TCASII CONTINUOUS ON PARALLEL APCH. TURNS OFF XPONDER WHEN TURNING OFF TCASII.
Narrative: WE WERE TURNED INTO FINAL FOR A VISUAL TO 19R AT SFO (BY BAY APCH), BEHIND A 747 ARRIVING FROM THE N WHO WAS XING THE 19R FINAL FOR A VISUAL APCH TO 19L. WHEN BOTH ACFT WERE ALIGNED ON FINAL, WE WERE NEARLY ABREAST BUT SLIGHTLY AHEAD OF THE 747. HIS ACFT WAS GIVING US A CONTINUAL RA ON THE TCASII. I WAS FLYING THE ACFT AND I REACHED OVER TO TURN OFF THE TCASII. I INADVERTENTLY TURNED THE XPONDER OFF AS WELL. ON THE GND, I WAS ASKED TO CONTACT THE TWR SUPVR, WHICH I DID -- AND I EXPLAINED TO HIM WHAT HAD HAPPENED.
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.