As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 L FIRE BOTTLE WILL NOT TEST. ACCOMPLISHED LEFT ENGINE EXTINGUISHER BOTTLE SQUIB TEST CIRCUIT TEST. RANG OUT WIRING FROM M32 SQUIB TEST PANEL TO LEFT SQUIB CONNECTOR D2188 ON BOTTLE 1, B17. CHECKED GOOD. CONNECTOR D2188 ON SQUIB CHECKED GOOD. REPLACED SQUIB TEST PANEL M32 DUE TO BAD SWITCH S1. TESTED GOOD.