NASA · Aviation Safety Reporting System
Air carrier Captain reported receiving multiple TCAS traffic alerts while on an RNAV approach to GUM airport. Tower reported that they had similar multiple reports attributed to Navy ships and were unable to prevent the issue from occurring.
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.
In IMC 5 miles from ADEDE in RNAV 6L we were switched to tower. At the same time a traffic yellow circle appeared with no altitude and we got "traffic, traffic" verbal. I asked tower and while they were answering we received two additional yellow circles appear and more "traffic" alerts. Tower said they have had similar reports and it was ships at Navy but obviously their requests to have them turned off were not effective. This was very distracting especially while IMC and dealing with weather.
NASA classification — Anomalies
- ATC Issue
- Inflight Event / Encounter
NASA classification — Assessments
- Contributing Factors / Situations
- Airspace Structure · Environment - Non Weather Related · Human Factors
- Primary Problem
- Environment - Non Weather Related
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 ↗.