【별표 6】사고원인 분류표

A. 직접원인(Causal Factor)

분류	세부원인
A.1- Aircraft Systems	A.1.1 System failure - affecting controllability A.1.2 System failure - flight deck information A.1.3 System failure - other
A.2- ATC/Ground Aids	A.2.1 Incorrect or inadequate instruction/advice A.2.2 Misunderstood or missed communication A.2.3 Failure to provide separation-air A.2.4 Failure to provide separation-ground A.2.5 Ground aid malfunction or unavailable
A.3- Environmental	A.3.1 Structural overload A.3.2 Wind shear, upset or turbulence A.3.3 Icing A.3.4 Wake turbulence-aircraft spacing A.3.5 Volcanic ash, sand, precipitation, etc. A.3.6 Birds A.3.7 Lightning A.3.8 Runway condition unknown to crew
A.4- Flight Crew	A.4.1 Lack of positional awareness - in air A.4.2 Lack of positional awareness - on ground A.4.3 Lack of awareness of circumstances in flight A.4.4 Incorrect selection on instrument or navaid A.4.5 Action on wrong control or instrument A.4.6 Slow or delayed action A.4.7 Omission of action or inappropriate action A.4.8 "Press-on-itis" A.4.9 Failure in CRM(cross-check/co-ordinate) A.4.10 Poor professional judgement or airmanship A.4.11 Disorientation or visual illusion A.4.12 Fatigue A.4.13 State of mind A.4.14 Interaction with automation A.4.15 Fast and/or high on approach A.4.16 Slow and/or low on approach A.4.17 Loading incorrect A.4.18 Flight handling A.4.19 Lack of/inadequate qualification, training or experience A.4.20 Incapacitation, medical or other factors reducing crew performance A.4.21 Failure in look-out A.4.22 Deliberate non-adherence to procedures
A.5- Engine	A.5.1 Engine failure or malfunction A.5.2 Propeller failure A.5.3 Damage due to non-containment A.5.4 Fuel contamination A.5.5 Engine failure simulated
A.6- Fire	A.6.1 Engine fire or overheat A.6.2 Fire due to aircraft systems A.6.3 Fire - other cause A.6.4 Post crash fire
A.7- Maintenance Ground Handling	A.7.1 Failure to carry-out due maintenance A.7.2 Maintenance or repair error, oversight or inadequacy A.7.3 Ground staff or passenger(s) struck by aircraft A.7.4 Loading error A.7.5 Bogus parts
A.8- Aircraft Structure	A.8.1 Corrosion or fatigue A.8.2 Overload failure A.8.3 Flutter
A.9- Infrastructure	A.9.1 Incorrect, inadequate or misleading information to crew A.9.2 Inadequate aerodrome support A.9.3 Inadequate or incorrect performance of ancillary equipment A.9.4 Inadequate or incorrect airport departure or arrival procedure design
A.10- Aircraft Design	A.10.1 Design shortcomings A.10.2 Unapproved modification A.10.3 Manufacturing defect
A.11- Aircraft Control/ Performance	A.11.1 Unable to maintain speed/height or achieve scheduled performance A.11.3 Aircraft becomes uncontrollable
A.12- Other	A.12.1 Caused by other aircraft or vehicle A.12.2 Non-adherence to cabin safety procedures A.12.3 Unsafe action by other personnel

B. 간접원인(Circumstantial Factor)

분류	세부원인
B.1- Aircraft Systems	B.1.1 Non-fitment of presently available ariscraft safety equipment(e.g. TAWS, TCAS, etc.) B.1.2 Failere or inadequacy of aircraft safety equipment B.1.3 Inoperative aircraft system
B.2- ATC/ Ground Aids	B.2.1 Lack of ATC B.2.2 Lack of ground aids B.2.3 Non-presision approach flown
B.3- Environmental	B.3.1 Poor visibility or lack of external visual reference B.3.2 Other weather B.3.3 Runway or taxiway condition(e.g. ice, slippery, standing water, debris, etc.) B.3.4 Aerodrome design or location
B.4- Flight Crew	B.4.1 Training inadequate B.4.2 Presented with situation beyond training or experience B.4.3 Failure in CRM(cross-check/co-ordinate)
B.5- Infrastructure	B.5.1 Incorrect or inadequate procedures B.5.2 Company management failure B.5.3 Inadequate regulation B.5.4 Inadequate regulatory oversight
B.6- Other	B.6.1 Illegal, unauthorised or drug smuggling flight B.6.2 Low fuel state B.6.3 Carriage of dangerous goods B.6.4 Non-safety related restrictions

※ 출처 : 영국 CAP776 Appendix5 참조