GlaStar / Sportsman Service Bulletin 62
GLASAIR AVIATION Sportsman · Service Bulletins
Overview
This document is Service Bulletin 62 from Glasair Aviation, which addresses the aileron counterweight assemblies for all GlaStar and Sportsman kits. It highlights the potential for rust inside the counterweight tubes and provides recommendations for inspection and maintenance.
- Service Bulletin 62 supersedes Service Bulletin 44.
- Applicable to all GlaStar and Sportsman kits.
- Rust was found inside aileron counterweight tubes during inspections.
- Moisture can enter the counterweight tubes due to their open design.
- Surface rust is unlikely to cause structural issues.
- Owners should inspect counterweight assemblies annually.
- Rust removal and treatment with corrosion inhibitors are recommended.
- Preventative treatment is advised even if no rust is found.
Document
Source
Originally published by glasairaviation.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type ·
- Service Bulletins
- Year ·
- 2007
- File size ·
- 30 KB
- Publisher ·
- glasairaviation.com
- Language ·
- en
What is the GlaStar / Sportsman Service Bulletin 62?
The GlaStar / Sportsman Service Bulletin 62 is a service bulletins for the GLASAIR AVIATION Sportsman, dated 2007.
Where does the GlaStar / Sportsman Service Bulletin 62 come from?
This copy of the GlaStar / Sportsman Service Bulletin 62 was originally published by glasairaviation.com and is hosted on Sprinkle as a free, searchable reference copy.
What year was the GlaStar / Sportsman Service Bulletin 62 published?
The GlaStar / Sportsman Service Bulletin 62 — the GLASAIR AVIATION Sportsman service bulletins on file — is dated 2007.
Most owners only have the POH. Here's the essential set for the GLASAIR AVIATION Sportsman.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins on file
- Type Certificate (TCDS)
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In this document
Subject
Aileron counterweight assemblies.
Applicability
All GlaStar and Sportsman kits.
Discussion
Rust was discovered in aileron counterweight tubes, which can occur due to moisture entering the open design.
Recommended Action
Inspect aileron counterweight assemblies for rust during annual inspections and treat as necessary.
Safety notes
- Inspect for rust during annual condition inspections.
- Use mechanical means to remove rust if found.
- Treat the interior of the tube with a chemical corrosion neutralizer.
- Preventative treatment with rust inhibitors is recommended.
Full document text
GlaStar / Sportsman Service Bulletin 62 Note: This service bulletin supersedes Service Bulletin 44. The service bulletin applicability was updated to include Sportsman kits. No other changes were made Subject: Aileron counterweight assemblies Applicability: All GlaStar and Sportsman kits Discussion: During a routine annual condition inspection, a Glasair owner discovered evidence of rust inside the square steel tubing of the aileron counterweights. The design and installation of the Glasair aileron counterweight assemblies is substantially similar to that on the GlaStar and Sportsman. Because the aft end of the counterweight tube is open, it is possible for moisture to enter the tube. Although aileron deflection would tend to drain any moisture that had collected inside the tube, it is possible that moisture could remain in the tube of a parked airplane for a considerable period of time. The rust observed in the subject counterweight arm tubes was surface rust only, and the likelihood of any structurally significant rust taking hold inside the tubes is extremely small. However, this would be an easy area to overlook during condition inspections, and it does warrant monitoring by Glasair owners. Recommended Action: In the course of each annual condition inspection, remove the aileron counterweight assemblies and inspect for rust inside the tubes. If any evidence of rust is found, use mechanical means (e.g., a thin wire brush, ScotchBrite on a dowel, etc.) to remove it and treat the interior of the tube with a chemical corrosion neutralizer such as Corrosion X or Locktite Extend. If no evidence of rust is found, preventative treatment with a chemical rust inhibitor is still recommended. Model: All GlaStar & Sportsman Document: Service Bulletin 62 Revision: - Date: 4/4/07 Page: 1 2007 Copyright© Glasair Aviation LLC, Arlington, Washington All rights reserved.