1. Autopilot Error

Disasters atribbuted to "auto-pilot error". Disasters included: Turkish Airlines Flight 1951, Birgenair Flight 301 and a Qantas Boeing 737 Incident.

2. 737 Tailfin Mystery

Disasters included: United Airlines Flight 585 and USAir Flight 427.

3. Pilot Fatigue

Disasters included: Air India Express Flight 812, Corporate Airlines Flight 5966 and Colgan Air Flight 3407.

4. Systems Failure

5. Poor Maintenence

Disasters included: Southwest Airlines Flight 812, Japan Air Lines Flight 123 and British Airways Flight 5390

6. Take-off

Disasters included: Spanair Flight 5022, Emirates Flight 407 and 2011 Lokomotiv Yaroslavl air disaster.