What was found
L BL AIR FAIL ANNUNCIATOR ILLUMINATED DURING CRUISE. ALL ENGINE INDICATIONS NORMAL. MAINTENANCE DISCOVERED A SCREW HAD CHAFED A HOLE INTO BLEED AIR LINE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
L BL AIR FAIL ANNUNCIATOR ILLUMINATED DURING CRUISE. ALL ENGINE INDICATIONS NORMAL. MAINTENANCE DISCOVERED A SCREW HAD CHAFED A HOLE INTO BLEED AIR LINE.