Captain reported a near miss with another aircraft while on an initial approach and communicating with ATC. The PF responded to a TCAS RA and maneuvered to avoid the other aircraft, then landed safely.

ACN 2062889 2023-12 Small Transport, Low Wing, 2 Turbojet Eng Near Midair Collision Incidents

Initial Approach

What is ASRS?

The Aviation Safety Reporting System is NASA's voluntary, confidential, non- punitive incident-reporting system, established 1976. Pilots, controllers, dispatchers, and maintenance technicians file reports describing safety- relevant events. NASA de-identifies every report before adding it to the public database. Reports are not investigated by NASA, the FAA, or the NTSB — they represent the reporter's perspective.

Pilot narrative

Verbatim from the de-identified NASA record. First-person account by the reporter. NASA strips identifying details (names, company, specific time); anonymization placeholders are ZZZ, X, Y.

Inbound 3000 ft. 10 nm ESE of PDK Atlanta approach asked if we had the field insight which we did. Cleared for the visual 3R Switch to Tower...seeing a target on TCAS 4 nm ahead constant bearing decreasing range indicating -300 feet, I asked if approach was talking to them. ATC stated negative do you want to stay with me? I stated we will maintain 3000 and stay with ATC until we passed over traffic, since we were being sequenced into PDK with multiple targets all around. At 5.4 nm from PDK just about to cross over traffic, the light civil must have noticed us on his gadget, maybe, maybe not, but as if Murphy was his copilot he initiated a climb towards us. PF took evasive action with TARA alert and climbed. TCAS altitude indicated -100 as at closest point of traffic below us. When clear of conflict we notified ATC we responded to RA and are clear, switching to tower and descending for visual. Landed uneventful. Suggestions: Although legal to pass outside of very congested airport without comms with ATC because “Below the Bravo”, not a good idea when the airport you are passing by lands jets.

NASA classification — Anomalies

Conflict
Deviation - Altitude

NASA classification — Assessments

Contributing Factors / Situations: Airspace Structure · Human Factors · Software and Automation · Procedure
Primary Problem: Procedure

ASRS reports are voluntarily submitted, de-identified by NASA, and represent the reporter's perspective. The presence of reports on a topic cannot be used to infer prevalence in the National Airspace System. The authoritative source is the NASA ASRS Database Online at asrs.arc.nasa.gov ↗.