What was found
AT 400 FT, TURNED BLEEDS ON AN LT ENVIRO FAIL ANNUN ILLUMINATED, TRIED TO RESET SEVERAL TIMES IAW THE CHECKLIST, DID NOT RESET, RETURNED TO DEPARTURE AND TRANSFERED THE ISSUE TO DML NR 35433 PER MEL 21-14 CAT C ALL O PROCEDURES COMPLIED WITH. MX REMOVED AND REPLACED THE LT PRSOV PN 114-380059-5 SN ON 0154B OFF 0456B IAW BMM 21-11-03 OPS CHECKS WERE GOOD. MX CLEARED THE DML AND THE PLACARD WAS REMOVED.