Article - Safety concerns renewed after debris found in tanks of Boeing MAX jets

[Adrian B]

Source 9 News article

Boeing has found debris in the fuel tanks of dozens of undelivered 737 MAX jets amid ongoing inspections as the Chicago-based plane-maker struggles to restore the trust of airlines and the wider public in the grounded fleet.
Boeing found debris in the fuel tanks of about 35 aircraft, a company spokesman confirmed on Friday (local time).
A source told Reuters that more than 50 percent of the undelivered 737 MAX jets inspected thus far have had debris found in them.

I cant find an article which identifies which production line the issue appears to stem from.

[Erik H. Bakke]

It does sound very similar to the issues that were found on the KC-46 767-based tanker, but that would be a different production line.

[Greg Hyde]

FOD (Foreign Object Debris) was a major issue with the KC-46 deliveries. Some a/c were not accepted until the FOD was removed.

Not sure if it included debris within the fuel system.

[Greg Hyde]

Not Good news

Dangerous fuel tank debris found in even more 737 MAX aircraft

Boeing found debris that could potentially cause safety risks in 70 per cent of its grounded 737 MAX aircraft – far higher than the previous estimate of simply “several”.

The planemaker said inspections first found the material, thought to include rags, tools and metal shavings left behind by maintenance workers, in late November but that it has now added safeguards to stop the problem happening again.

A spokesman said, “Boeing is taking it very, very seriously.”

Full story

https://thewofa.com/2020/02/dangerou...-max-aircraft/