What was found
INSPECTION TYPE-N/A, AT 13,00O 2 PAK, SPEEDBRAKES GRADUALLY DEPLOYED NORMAL PITCH DOWN F/ DESCENT BUT PITCHDOWN FORCE INCREASED SUBSTANTIALLY WITHOUT PILOT INPUT. NOSE DROPPED ALMOST 25 DEG NOSE DOWN AND A/S INCREASED TO 340 KTS PASSING THROUGH 1,000 FT WITH CAPT AND FO BOTH PULLING ON YOKE WITH BOTH HANDS. PERFORMED 30/40 TEST FAULT NOTED PER FIM FOUND C/P D40281P OFF P1-1 MODULE CAPTS LEFT INST PANEL SERVICED C/P PERFORMED 30/40 TEST, CK OK, TEST NR 59 CKS OK. REMOVED AND REPLACED MCP PER ENGINEERING MIM 22-11-02, TEST 4 CHKS OK. PERFORMED 30/40 CHK OK. OPERATED STAB FULL TRAVEL WITH COLUMN TRIM SWS CKS OK, SEE LP 932012 FOR REST OF ACTION.