As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI AFTER START RH HYDRAULIC QUANTITY EICAS MSG. QUANTITY ON STATUS PAGE 0.22. A/C RETURNED TO THE GATE (BTB) AND MTX GROUNDED A/C. INSPECTED AND FOUND #11 OUTBOARD SPOILER PCA LEAKING . REMOVED AND REPLACED #11 PCA IAW B767 AMM 27-61-02, OPS CHECK GOOD , C/W RII 27-26-1. MTX RETURNED A/C TO SERVICE .