What was found
RH INBOARD WING STRAKE TKS POROUS PANEL HAS TWO DENTS. THE SMALL DENT MEASURES .423 ' X .224" WITH A DEPTH OF .042". THE LARGER DENT IS 2.25" X .235" WITH A DEPTH OF .034". CESSNA LC41-550FG/T240 AMM CHAPTER 30 DOES NOT INCLUDE ANY DAMAGE INFORMATION OR LIMITS. CHAPTER 30 LISTS MAINTENANCE AND INSPECTION PROCEDURES FOR INADVERTANT AND FIKI AIRCRAFT WITH TKS SYSTEMS, JUST NO LIMITATIONS. CESSNA AIRCRAFT MODEL 300, 350 & 400 WITH CAV AEROSPACE TKS SYSTEMS INSTALLED BY MANUAL 12253-01 REVISION 8 HAVE POROUS PANEL LIMITATIONS FOR DAMAGE. HOWEVER, THIS CAV AEROSPACE MANUAL 12253-01 IS NOT APPLICABLE TO TEXTRON MODEL T240. CESSNA T240 POH SUPPLEMENT 4 COVERS TKS SYSTEMS FOR FLIGHT INTO KNOWN ICING (FIKI) BUT THE SUPPLEMENT DOES NOT LIST DAMAGE LIMITATIONS. THE FOLLOWING WAS SUPPLIED BY TEXTRON AVIATION, WHICH DOES NOT FIT THE FAA REQUIREMENTS TO BE ACCEPTABLE OR APPROVED DATA WITHOUT AN APPROVED ENGINEERING DOCUMENT, LIKE AN FAA FORM 8110-3.. TEXTRON AVIATION LOGO TEAM STRUCTURES – DAILY UPDATE DQ ID - 35125 AIRCRAFT S/N - T24002087 DESCRIPTION - RT WING TKS STRAKE PANEL 06/10/2022 03:45 PM CT - AFTER CONSULTATION WITH ENGINEERING THE FOLLOWING IS OFFERED.
THERE ARE NO AERODYNAMIC LIMITATIONS FOR DENTS IN THE TKS LEADING EDGE PANELS. IF THE PANEL IS OPERATIONAL PER THE AMM CHAPTER 30 THE PANEL MAY REMAIN IN SERVICE. [RONNAU, THOMAS] © 2019 TEXTRON AVIATION INC., ONE CESSNA BLVD.| WICHITA KS 67215