NASA · Aviation Safety Reporting System
TRACON Controller reported they were not aware an aircraft did not read back their clearance correctly and the aircraft descended below the Minimum Vectoring Altitude.
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.
Training in progress at this position. The trainee cleared Aircraft X direct to MILKY, descent to 4000 ft. and told the aircraft to expect the RNAV28 into AGC. The aircraft read back cleared RNAV 28 and descended below the MVA of 3400. The trainer (I) nor the trainee caught the bad read back. We noticed his altitude at 3200 ft. and questioned what had happened. Recommend active listening.
NASA classification — Anomalies
- ATC Issue
- Deviation - Altitude
- Deviation / Discrepancy - Procedural
- Inflight Event / Encounter
NASA classification — Assessments
- Contributing Factors / Situations
- Chart Or Publication · Environment - Non Weather Related · Human Factors · 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 ↗.