PPRuNe Forums - View Single Post - Using GPS ground speed to resolve Unreliable Airspeed
Old 7th Jun 2019, 04:46
  #116 (permalink)  
yanrair
 
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Originally Posted by yanrair

apolgies I think we are into thread creep territory?
Yes that’s true. The engineer thought he had but hadn’t. The point is that you could fire the bottles without having pulled the fire handle which masked the error. On a 737 for example that can’t happen Anyway it was not done correctly I agree. What happened next is what I’m saying is almost unthinkable today- to land in four minutes. 4 passengers died. Plane totally burned out in a very short time. All you need to land is the wheels. Nothing else. No FMC Entries , speeds weights or dumping needed -180 kts will do on long runway. And that’s pretty much what they did.
The BOAC logic was that for simple engine failure with no fire you didn’t need to pull fire handle. After “WE” they changed to “always pull fire handle” - you can always push it / twist it back again. Y
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