As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT OVERWING ESCAPE SQUIB TEST FAILS TO ILLUMINATE DURING TEST. LAMP CHECKS OKAY WITH PRESS-TO-TEST. REPLACED BATTERY PACK PER MM 33-51-07 AND MM 25-65-17, TESTED OK. TWO MONTHS LATER RELAY P/N XD4L015 AND BATTERY WERE REPLACED, SUGGESTING THAT RELAY AND BATTERY MAY HAVE BEEN RELATED IN BOTH CASES.