COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Bell Helicopter Textron 412 Series Helicopters
AD/BELL 412/15 Battery Cable Installation 9/86
Applicability: All models with S/Nos 33108 through 33118.
Requirement: Inspect the battery cable installation according to Bell Alert Service Bulletin No. 412- 86-23. Modify the installation if required according to the requirements of the referenced Service Bulletin.
Compliance: Within 30 hours time in service after 30 September 1986.
Background: Incorrect battery cable installation may cause chafing against an adjacent lightening hole and/or the forward fuel cell vent line manifold. An incorrect installation has been detected on a new production helicopter.