Technically: Beechcraft Service Letter #MTL-55-01

Technically: Beechcraft Service Letter #MTL-55-01

Date: May 2018

Stabilizers – Inspection of the Washer Location in the Elevator Support Assembly

Effectivity: King Air Model B200GT, Serial Numbers BY-301 through BY-303; King Air Model B300, Serial Numbers FL-1106, FL-1107, FL-1110, FL-1111, and FL-1113; and King Air Model B300C, Serial Number FM-72

Reason: The washers for the left and right elevator support assemblies may not be installed in the correct location.

Description: This service document provides parts and instructions to inspect the left and right elevator support assemblies to make sure the washer is installed on the inboard side of the support assembly.

Compliance – Recommended: This service document should be accomplished at a scheduled maintenance period or inspection.

A service document published by Textron Aviation may be recorded as completed in an aircraft log only when the following requirements are satisfied:

  1. The mechanic must complete all of the instructions in the service document, including the intent therein.
  2. The mechanic must correctly use and install all applicable parts supplied with the service document kit. Only with written authorization from Textron Aviation can substitute parts or rebuilt parts be used to replace new parts.
  3. The mechanic or airplane owner must use the technical data in the service document only as approved and published.
  4. The mechanic or airplane owner must apply the information in the service document only to aircraft serial numbers identified in the Effectivity section of the document.
  5. The mechanic or airplane owner must use maintenance practices that are identified as acceptable standard practices in the aviation industry and governmental regulations.

No individual or corporate organization other than Textron Aviation is authorized to make or apply any changes to a Textron Aviation-issued service document or flight manual supplement without prior written consent from Textron Aviation.

Textron Aviation is not responsible for the quality of maintenance performed to comply with this document, unless the maintenance is accomplished at a Textron Aviation-owned Service Center.

The above information may be abbreviated for space purposes. For the entire document, go to

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