As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COPILOTS BRAKES BEING WEAK, SOFT OR SPONGY. [SUP 04-27-07] TAXIED ACFT AND FOUND EXCESSIVE TRAVEL ON COPILOT'S LEFT PEDAL. BRAKE SYSTEM BLED, AIR BUBBLES SEEN WHEN LEFT BRAKE BLED. TAXIED ACFT AND BRAKES CHECK GOOD. COPILOT PEDAL REQUIRE EQUAL FORCE FOR STOPPING. OPS & LEAK CHECK GOOD ON BRAKES.