As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MX. CHAFING ON FIRE DETECTION ELEC WIRING 2621-0020 FROM CONNECTOR 5WE1 TO CONNECTOR 473VC ON LT PYLON. R & R FIRE DETECTION ELEC WIRING 2621-0020 IAW AMM 26-21-01 & ESPM 20-48-24. PERFORMED OPERATIONAL TEST OF ENG BOTTLE LOW PRESS INDICATING CIRCUIT & TEST IS OK IAW AMM 26-21-00-710-002-A.