Boeing doors held in place by a single cable tie

The preliminary accident investigation report has come up with a picture taken after closing the plug door that afterwards departed from a Alaska 737 MAx 9 in the air. It shows it being held down by a a cable tie. THere is speculation that this would be enough to stop the door from sliding up and being able to eject for a number of flights sine there woud be litle presure on it as oon as the plane takes off and outside air pressure locks it onto its stopping pads.

It could also be that the cable tie held the bag of roller stopper bolts that was to be installed by a later shift but that the last part never happened.

There is a case for ripping out the floor of that particular Alaska 737 Max9 and see if anything that the investigation has so far not found have slipped down along the wall and is now laying in a hidden area that can't be checked otherwise. 

Another worrying picture is of a stopper bolt installed but with 2 washers. This is proably so the castelated nut can lign up with the hole in the bolt and the split pin secured in such a way that the castellated nut can grip it. But what it really means is the bolt used was too long. Again that the bolt was not ordered to specific spec. 

When a bolt is used as a stopper and not holding 2 pieces together for the first a clevis pin should really have ben used instead. But if that is not the case the bolt should have been very specific in how much unthreaded part it should have to avoid overtightening and weaken the material it goes through. In addition the lenght of thread to the hole for the split pin should have been exact so only 1 one washer was needed. 

All these shortcuts and probably cost saving practices are very worrying. What else is done in a shoddy way that we haven't heard about yet. Or only halve done because of constant rotation of the people actually building the planes. 

1 measly day of safety briefings instead of actual production came up with 1 whistleblower and wrongly drilled holes. What would 2 days have come up with. It is a worry that more and more ex Boeing manufacturing managers come out and ay they would no longer feel safe in flying with the planes their ex employer now produce

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