What was found
DUING TAXI AFTER ENGINE START L ENG.ANTI ICE AND VALVE LIGHT ILLUMINATED AC RETURNED TO GATE(BTB) MTX GROUNDED AC MTX MANUALLY ACTUATED VALVE AND PERFORMED OPS TEST IAW B767 AMM 30-21-03. OPS TEST GOOD AND RETURNED AC TO SERVICE .
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DUING TAXI AFTER ENGINE START L ENG.ANTI ICE AND VALVE LIGHT ILLUMINATED AC RETURNED TO GATE(BTB) MTX GROUNDED AC MTX MANUALLY ACTUATED VALVE AND PERFORMED OPS TEST IAW B767 AMM 30-21-03. OPS TEST GOOD AND RETURNED AC TO SERVICE .