ASRS 2091133
ACN 2091133 · 2024-02 · Small Aircraft, Low Wing, 1 Eng, Retractable Gear
GA pilot reported a NMAC during approach to OAK airport while on the SHARR ONE ARRIVAL. Reporter stated an evasive maneuver was executed after receiving a TCAS RA.
Pilot narrative
Verbatim, de-identified by NASA. Placeholders: ZZZ,
X, Y.
Was cleared to fly the SHARR ONE ARRIVAL into OAK except to maintain 11,000. We were at 11,000 feet as I recall we were at or near MAMIE intersection on the arrival. We were given a traffic location by ATC we acknowledged we were looking and almost instantly we received an RA. There was no TA just an RA which commanded about a 2500 foot per minute descent. I responded accordingly. The TCAS display on first ATC notice and RA command showed traffic very near us (I do not recall distance scale set) that was 100 feet above us and as I was responding to RA I saw vertical distance was at 0 feet. I descended to about 10,000 feet and then received a cleared of conflict. We reported RA to ATC with a weak response and with a delayed response of ROGER. There was no follow up response by controller. I therefore felt compelled to file this report as I was concerned that ATC may have missed the conflict until it was too close.
NASA classification · Anomalies
- Conflict
- Deviation - Altitude
- Deviation / Discrepancy - Procedural
NASA classification · Assessments
- Contributing Factors / Situations
- Human Factors
- Primary Problem
- Human Factors
ASRS reports are voluntary, de-identified by NASA, and represent the reporter's perspective; they are not investigated and cannot be used to infer prevalence. Authoritative source: asrs.arc.nasa.gov ↗