John F. Martin

Ref: Docket No. FAA-2008-0284 Directorate Identifier 2008-CE-006-AD Airworthiness Directive 2008-11-18 The above referenced Airworthiness Directive seems to be Repetitive in nature without a terminating action. Here is what I don't understand. Note: Applicability SR20 airplanes S/N's 1005 thru 1815 Para. (e) (1) Actions: Perform the pressurizations ck (this is OK) Para. (e) (1) Compliance: First 25 hrs then every 100 hrs. (this is OK) Para. (e) (1) Procedures: Follow SB 2X-78-07R1 (this is OK) Para. (e) (2) Actions: Replace with new improved version of heat exchanger weldment and new shroud. Para. (e) (2) Compliance: (this seems OK but not difinitive) Here is my Question: The NOTE below the Actions, Compliance & Procedures section states: Note: The replacement of the heat exchanger weldment and shroud may be done instead of the initial inspection but does not eliminate the 100-hour repetitive inspection. How is it that this AD doesn't apply to serial numbers above 1815 that have the same NEW IMPROVED weldment heat exchanger and shroud. One of 2 (two) things should be done here. Either include all SR20's or have a Terminating clause in the AD because the maintenance manual states this must be done anyway. This Airworthiness Directive needs to be re-written with a Termination statement. I look forward to your reply. Best Regards, John F. (Fred) Martin