As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: GPS-L AND GPS-R FAILED WITH GPS FAIL LIGHT ILLUMINATED WITH RECALL. BOTH GPS REMAINED INOP FOR AN EXTENDED PERIOD THEN RETURNED TO OPS NORMAL JUST PRIOR TO LANDING. REMOVED AND REPLACED AND OPS CHECK IRS MASTER CAUTION UNIT IAW AMM 34-21-07.