What was found
PART MISSING. FILTER MISSING ON PORT; TAKEN FROM STOCK. CONNECTOR PLATE BROKEN, CORROSION ON INSIDE OF BASE AND CASE, UNIT LEAKS, AND NEEDS ADJUSTMENT. ACTION TAKEN: REPAIRED, CLEANED CORROSION, REPLACED CONNECTOR PLATE, FIXED LEAKS, ADJUSTED AND FUNCTRIONALLY TESTED OK TO 20,000 FEET. C/W AIRWORTHINESS DIRECTIVES OR SB'S AS PER TSM 7421 REV A JAN 1993.