What was found
AIRCRAFT DEPARTED INL ON A MINUS 9 DEGREES FAHRENHEIT DAY. OIL BREATHER PLUGGED WITH ICE, FRONT OIL SEAL BLOW-OUT ALONG WITH ALL THE ENGINE OIL. AIRCRAFT WAS SUBSTANTIALLY DAMAGED DURING 'OFF FIELD' LANDING. AD 64-17-05 IS NOT APPLICABLE BECAUSE BREATHER HAS A 'NICKLE SLOT' CUT IN IT DURING MANUFACTURE, BUT SLOT WAS FILLED WITH ICE. SUBMITTER RECOMMENDS MOVING BREATHER LINE AND AIR/OIL SEPARATOR TO A WARMER PART OF THE ENGINE COWLING. IT IS CURRENTLY MOUNTED IN THE FRONT NOSE COWL WHICH PROVIDES NO PROTECTION FROM THE ELEMENTS.