As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING, SB550-28-14, THE FUEL BOOST PUMP WIRING INSIDE THE LT AND RT WING TANKS WAS FOUND TO HAVE RUBBED HOLES IN THE FUEL TRANSFER LINES INSIDE THE TANKS AND DAMAGED THE WIRING. THE ABOVE BULLETIN ADDRESSES THIS CONCERN AND PROVIDES INSTRUCTIONS FOR SECURING THE BOOST PUMP WIRING, THIS IS A MANDATORY BULLETIN ONLY. WE HAVE HEARD OF OPERATORS WHO HAVE BEEN UNWILLING TO DO THIS BULLETIN BECAUSE IT IS NOT ASSOCIATED WITH AN AD AT THIS TIME. WE HAVE DIGITAL PICTURES AVAILABLE.