Table 4. Comparison of air accident classification criteria btw FAA & NTSB

No. FAA Part 107 NTSB Part 830/831
Investigation protocols Same for manned aircraft Same for manned aircraft
Time to report No later than 10 days Immediately
Report means FAA web site form Not defined- Can be verbal
Serious injury Level 3, 4, 5 on the AIS scales-reversible injury but require hospitalization Part 831- broken bones 48hr-hospitalization
Incident Not applicable As per part 831 listing
Damage threshold Repair or fair market value exceeds $500 Part 831 definition of “substantial damage”
Intended use Safety and enforcement Safety only
Hobbyist Only if operated illegally Not applicable (as accident)
Final report FAA 8020-23 form-same for any manned aircraft NTSB Format-same for manned aircraft accident