FAA auditors spotted mechanics from the company using a hotel key card to check the seal on a door in one instance and witnessed other Spirit mechanics applying Dawn liquid soap to a door seal ...

A Boeing spokesperson confirmed that the company had approved the use of the soap and the key card tool as shop aids. The FAA said it could not comment because the audit was part of its continuing ...

Now, new details emerging from a Federal Aviation Administration audit of the ... mechanics working for Spirit were even observed using Dawn dish soap on a door seal in place of lubricant.

Related: Dish soap, hotel key cards, and confusion: Boeing FAA audit unearths dozens of issues] During its six-week audit, an FAA investigator claimed they saw Spirit mechanics apply Dawn dish ...

Mechanics at a Boeing supplier used liquid soap as a lubricant to fit a 737 Max door seal, per NYT. The instance was mentioned in a document discussing FAA audits of Boeing and its supplier, per NYT.