Division Beechcraft 90 and 65-90 (King Air) Serie - AD/BEECH 90/86 Amdt 2 - Rudder Trim Tab - Beechcraft 90 and 65-90 (King Air) Series Aeroplanes

Beechcraft 90 and 65-90 (King Air) Series Aeroplanes

AD/BEECH 90/86 Amdt 2	Rudder Trim Tab	9/2006

Applicability:	Group 1 aircraft:Models 65-90, 65-A90, B90, C90, and C90A aircraft, serial numbers LJ-1 through LJ-1280.Model E90 aircraft, serial numbers LW-1 through LW-347.Group 2 aircraft:Model C90A aircraft, serial numbers LJ-1281 through LJ-1732.
Requirement:	For Group 1 aircraft:1. Inspect the rudder trim tab for proper moisture drainage provisions in accordance with Beech Service Bulletin (SB) No. 2365 Revision 1.If the correct drainage provisions do not exist, before further flight, modify the rudder trim tab in accordance with SB No. 2365 Revision 1.For Group 2 aircraft:2. Inspect the rudder trim tab for proper moisture drainage provisions in accordance with SB No. 2365 Revision 2.If the correct drainage provisions do not exist, before further flight, modify the rudder trim tab in accordance with SB No. 2365 Revision 2.Note: FAA AD 2006-13-10 Amdt 39-14663 refers.
Compliance:	1. Within 150 hours time in service after 25 June 1992, unless already accomplished.2. Within 150 hours time in service after 31 August 2006, unless already accomplished.The compliance time for Requirement 1 remains unchanged by this issue.

Applicability:

Group 1 aircraft:Models 65-90, 65-A90, B90, C90, and C90A aircraft, serial numbers LJ-1 through LJ-1280.Model E90 aircraft, serial numbers LW-1 through LW-347.Group 2 aircraft:Model C90A aircraft, serial numbers LJ-1281 through LJ-1732.

Requirement:

For Group 1 aircraft:1. Inspect the rudder trim tab for proper moisture drainage provisions in accordance with Beech Service Bulletin (SB) No. 2365 Revision 1.If the correct drainage provisions do not exist, before further flight, modify the rudder trim tab in accordance with SB No. 2365 Revision 1.For Group 2 aircraft:2. Inspect the rudder trim tab for proper moisture drainage provisions in accordance with SB No. 2365 Revision 2.If the correct drainage provisions do not exist, before further flight, modify the rudder trim tab in accordance with SB No. 2365 Revision 2.Note: FAA AD 2006-13-10 Amdt 39-14663 refers.

Compliance:

1. Within 150 hours time in service after 25 June 1992, unless already accomplished.2. Within 150 hours time in service after 31 August 2006, unless already accomplished.The compliance time for Requirement 1 remains unchanged by this issue.

	This Amendment becomes effective on 31 August 2006.
Background:	The FAA received reports of trapped water in the rudder trim tabs on several of the affected aircraft. The cause was attributed to improper drainage provisions. The freeze-thaw action of trapped water may cause structural damage and could result in control surface flutter due to an out of balance condition.Amendment 1 extended applicability to additional serial numbered aircraft.Amendment 2 is issued in response to a new FAA AD, which extends applicability to additional Model C90A aircraft.

This Amendment becomes effective on 31 August 2006.

Background:

The FAA received reports of trapped water in the rudder trim tabs on several of the affected aircraft. The cause was attributed to improper drainage provisions. The freeze-thaw action of trapped water may cause structural damage and could result in control surface flutter due to an out of balance condition.Amendment 1 extended applicability to additional serial numbered aircraft.Amendment 2 is issued in response to a new FAA AD, which extends applicability to additional Model C90A aircraft.

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David Villiers
Delegate of the Civil Aviation Safety Authority

19 July 2006

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Beechcraft 90 and 65-90 (King Air) Series Aeroplanes