COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Cessna 337 Series Aeroplanes
AD/CESSNA 337/23 Battery Lid Retaining Channel - Modification 8/77
Applicability: Model 337 with S/Nos. prior to 33701463.
Requirement: 1. Inspect the landing gear hydraulic lines in the vicinity of the battery for damage caused by electric arcing between the battery lid retaining channel and the positive terminal of the battery. Replace any line showing arcing damage.
2. Insulate the battery lid retaining channel with nylex sheathing or similar material and install protective rubber terminal ends (P/N MS25171-35 or similar) to the battery lead ends.
Note: Rex Aviation Technical Memo TM-43 also refers to this problem.
Compliance: Within 100 hours time in service after 30 September 1977.