As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYS - FRM CODE EICAS MESSAGE "GEAR NOT DOWN" DURING DESCENT WITH THROTTLES AT 26,000. TROUBLE SHOT IAW FIM 31-51-00/101, FIG 109A. LT RA ALREADY ON DMI- BITE OF ALTIMETER SHOWS RA FAIL . REPLACED LT RA IAW AMM 34-33-01, ALL CHECKS GOOD.