As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AN OPERATOR PERFORMING ELT G-SWITCH FUNCTIONAL CHECKS AS REQUIRED BY NZCAA AD DCA/RAD/54 FOUND TO DATE, 4 OUT OF 6 SWITCHES HAVE FAILED THE CMM CHECK. UNIT SERIAL NR`S,13601 (EX A/C 621) 11619 (EX A/C 615) 15389 (EX A/C 630) 11212 (EX A/C 611).