Codebooks.

FAA-distributed taxonomies — the lookup tables that decode coded fields in the agency bulk databases. Cause factors, phase of flight, accident types, certifications, and more. Used internally by the Atlas to decode legacy records, surfaced here for direct reference.

Available codebooks

NTSB · Form 6120.4

Pre-1982 Codebook

Cause factors, phase of flight, accident types, and 269 other taxonomies for legacy NTSB accident data 1962-1981.

2,910 codes · 272 field types →

More codebooks land as we ingest additional FAA bulk DBs. The modern NTSB Findings taxonomy (avall.mdb 2008+) is hierarchical and decoded inline on each event page — a structured codebook view is on the build path.

Codebooks.

Available codebooks

Pre-1982 Codebook