What was found
VACUUM HOSES NEEDED TO BE REMOVED FROM THE AIRCRAFT INSTRUMENT GYROS FOR INSTRUMENT REPLACEMENT. UPON REMOVAL, THE HOSE INNER AND OUTER CASINGS CRUMBLED. SUGGEST REPLACEMENT OF IMPERIAL EASTMAN HOSE WITH AEROQUIP '306' LOW PRESSURE HOSE. CONDITION IS NOT READILY DETECTABLE EXTERNALLY. THE HOSE CAN BE IDENTIFIED BY A RED INNERTUBE COVERED WITH FABRIC AND A BLACK OUTER CASING.