Similar Variables in Boeing 747 crashes

The similar variables are for Air India 182, Pan Am 103, TWA 800 and UAL 811:
1. Aircraft type, model, and experience: Boeing 747-100 and 200 series with two ADs against front cargo door and high flight time and cycles. All.
2. Flight mode: Presssure differential changes during or just after climb, or descent. All
3. Airspeed: 300 knots. All
4. Radar blip anomaly just before event. 103, 800.
5. FOD number three engine with baggage. 103, 800, 811
6. Start of destruction: front cargo hold area. All.
7. One half second of loud bang on voice recorder, then silence. All.
8. Abrupt halt to flight data recorder: severing of main power line behind nose wheel. All.
9. Nose comes off. 103, 800, 182
10. Rest of aircraft falls and disintegrates landing apart from nose. 800, 103, 182
11. Cargo door and baggage closest to event indicating left first. 800, 103.
12. At least eight bodies never recovered: possibly ingested into number three engine and vaporized. 800, 103, 811
13. Missing bodies sat over and aft of cargo door. 103, 800, 811
14. Front cargo door in pieces. 103, 811, 800
15. No evidence of explosives found on any passengers nor airframe. 182, 800, 811
16. Engine three separates first and departs to land apart from other three engines. 103, 800, 182
17 Cargo floor buckled. 103, 811
18. Cargo door closed at night. 103, 800, 811
19. Door opened while crew communicating with ground. 103, 182, 800
20. EPR blip on engine number three just before abupt halt of data recorder. 103, others possible
21. Lock sectors locked on door but cam sectors unlocked. 811, others possible.
Unknown: Why do doors open inadvertently inflight and on the ground?
The pattern which fits 800, 103, and 182 is known pattern of UAL Flight 811. The events and most consequences were similar; the cause is the same: Inadvertent opening of lower front lobe cargo door in flight.
Comment: Only a reproducible large mechanical fault on similar airplanes during similar flight mode can give similar destruction effects on so many aircraft over so long a time: Forward cargo door opening in flight.
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