AD 2009-13-04

Do the following actions per the instructions in RUAG Aerospace Defence Technology Dornier 228 Alert Service Bulletin ASB-228-279, dated December 19, 2008:

(1) Initial Inspection: Unless already done within the last 1,200 hours time-in-service (TIS) as of July 24, 2009 (the effective date of this AD), inspect upon accumulating 9,600 hours on the guide pins of the power and condition levers or within the next 100 hours TIS after July 24, 2009 (the effective date of this AD), whichever occurs later.

(2) Repetitive Inspections: Inspect within 1,200 hours since the last inspection required by paragraph (f)(1) of this AD and thereafter at intervals not to exceed 1,200 hours TIS.

(3) Replacement: Replace the guide pins as follows:

(i) Before further flight, after any inspection required in paragraphs (f)(1) or (f)(2) of this AD, where any guide pin exceeds the acceptable wear-limits as defined in the service bulletin; and

(ii) Prior to any required inspection, you may install new power and condition levers guide pins instead of doing the inspections required in this AD. You must then inspect or install new pins upon accumulating 9,600 hours TIS and follow the repetitive inspection intervals of this AD if replacement is not made.

Note 1: If the hours TIS of the throttle box assembly is unknown, you may use the hours TIS of the airplane to determine the compliance time for the inspection.

Note 2: This AD differs from the MCAI and/or service information as follows: No differences.