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Software bug at Alaska Airlines caused 2 tailstrikes
This is what led to the FAA issuing temporary ground holds for all Alaska Airlines flights. (gizmodo.com) Más...Sort type: [Top] [Newest]
Unfortunately, pilots seem to be taught to pull the airplane off the runway when they rotate. ROTATE means raise the attitude to a safe AOA (7.5 degrees) and wait for the airplane to lift off. No tail strike.
Not these airplanes. You’re trained to pitch to the TOGA line in the HUD or if you’re the FO, pitch to the pitch attitude bar in the PFD which corresponds to the FMC generated TOGA line in the Captain’s HUD. A flaw in the FMC data will produce a flawed TOGA pitch attitude, and that was the issue here.
The TOGA line is not going to command a tail strike attitude. It is only going to command a rotate attitude of approximately 6.8 to 8.0 degrees in the 737 900 or Max9 depending on flap setting. These airplanes were over-rotated (more than 10 degrees = tail strike). Stab trim setting would affect over-rotation more than weight error.
Sounds more like incorrect input data than a bug, to be honest.
A Tail Strike in a 737... that is a Pretty Good software Glitch!
Well, they really are low-riders.