What was found
SUPPLEMENTAL INFORMATION: DORSAL FIN SEAL AT FWD TIP HAS WORN INFO FUSELAGE SKIN ON R/H SIDE. BLENDED DAMAGE REF SRM 53-00-01; PERFORMED NDT AND FOUND THICKNESS REMAINING (.033) OK FOR 10 REVENUE FLIGHT CYCLES REF ROW 44 SRM SUPPLEMENT ARM 90-7023-01 REV B. FROM NRC D408086 / REF. DMA 0404508 DORSAL FIN SEAL WORN INTO FUSELAGE SKIN FWD TIP. R/H SIDE STA 847. REPAIRED FUSELAGE SKIN AT STA. 847 IAW EA 20-153-00233 REV IR; AND ER 20-02377 REV IR. CLEARING NUMBER 36433.