What was found
DURING 100-HOUR INSPECTION AND C/W AD 90-02-22, FOUND 2 INCH CRACK ON OUTBOARD SIDE OF THE LEFT HORIZONTAL STABILIZER (TAIL PLANE) ATTACHMENT BRACKET, PN C2TP159A. AD 90-02-22 CALLS FOR INSPECTION OF THE FUSELAGE MOUNTED BRACKETS, P/N'S C2-FS-543A AND C2-FS-544A, AND NOT FOR INSPECTION OF BRACKETS MOUNTED ON THE HORIZONTAL STABILIZER P/N'S C2TP159A AND C2TP160A. THIS AIRCRAFT IS A FLOAT PLANE. SUBMITTER BELIEVES CAUSE OF THIS DEFECT IS THE EXCESSIVE FORCE APPLIED TO THE HORIZONTAL STABILIZER (TAIL PLANE) DURING 'RAMPING' OR 'BEACHING' OF THE AIRCRAFT BY GROUND PERSONNEL AFTER FLIGHT. AD 90-02-22 SHOULD BE REVISED TO INCLUDE THE INSPECTION OF THE STABILIZER MOUNTED BRACKETS, P/N'S C2TP159A AND C2TP160A.