As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BRAKES LT AND RT ARE SPONGY WILL NOT HOLD A/C ON MAX POWER STATIC TAKEOFF. INSPECTED LEFT AND RIGHT BRAKE SYSTEM AND FOUND NO DEFECTS. BLEED LEFT AND RIGHT BRAKE SYSTEMS, BLEED AIR FROM NR 1 AND 4 BRAKES, NR 2 AND 3 BRAKES HAD NO AIR. ALL WORK ACCOMPLISHED IAW CESSNA 750 MM 32-42-00. NO DEFECTS NOTED.