ModSum question by student
I have no idea what a ModSum is. I am reading an AD an understand what an AD and SB are but do not understand how they are connected to a ModSum
Modsum 4-126330, Fuel Tank System Design Left and Right Side (SFAR 88) Retrofit. Approved instructions for the incorporation of Modsum 4-126330 are contained in Bombardier Service Bulletin (SB) 84-57-09 Revision B, dated 3 September 2008, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada
In this case what is a ModSum exactly? Is it just a list of instructions to follow and how is it connected with a SB and AD. I know that an SB is made because of an AD but do not understand anything about a ModSum
Thanks