Stinson Service Bulletin #266
STINSON 108 · Service Bulletins
Overview
This service bulletin addresses issues with the rudder cables of Stinson 108 aircraft, specifically regarding breakage at the pulley point. It provides instructions for inspecting and modifying the pulley system to prevent future cable failures.
- Rudder cable breakage reported at the AN210-3A pulley.
- Inspection of cables requires removal and bending to check for broken strands.
- Modification of the pulley is recommended for all affected aircraft.
- Specific steps for modification are outlined in the bulletin.
- Replacement of broken cables is necessary.
- The bulletin includes a sketch for reference.
- The service bulletin is applicable to Stinson 108 models 108-1, 108-2, and 108-3.
- Issued on February 1, 1950.
Document
Source
Originally published by univair.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type ·
- Service Bulletins
- Year ·
- 1950
- File size ·
- 104 KB
- Publisher ·
- univair.com
- Language ·
- en
What is the Stinson Service Bulletin #266?
The Stinson Service Bulletin #266 is a service bulletins for the STINSON 108, dated 1950.
Where does the Stinson Service Bulletin #266 come from?
This copy of the Stinson Service Bulletin #266 was originally published by univair.com and is hosted on Sprinkle as a free, searchable reference copy.
What year was the Stinson Service Bulletin #266 published?
The Stinson Service Bulletin #266 — the STINSON 108 service bulletins on file — is dated 1950.
Most owners only have the POH. Here's the essential set for the STINSON 108.
- 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
Stinson Rudder Cables Model 108; 108-1; 108-2; and 108-3
Inspection Procedure
To check for broken strands, remove cables from pulleys and bend them to visually inspect.
Cause of Breakage
Breakage was caused by excessive bending around the pulley.
Modification Instructions
Detailed steps for modifying the pulley system to prevent cable breakage.
Replacement of Cables
If any signs of breakage are found, the cables must be replaced.
Sketch Reference
Accompanying sketch provides visual guidance for modifications.
Safety notes
- Inspect rudder cables regularly for signs of breakage.
- Follow modification instructions carefully to ensure safety.
- Failure to modify the pulley may lead to cable failure.
- Always replace broken cables immediately.
Full document text
SERVICE BULLETIN Stinson Service Bulletin #266 February 1, 1950 Subject: Stinson Rudder Cables Model 108; 108-1; 108-2; and 108-3 To: All Owners of Stinson 108 Model We have received several reports from the field that the core strands of the rudder cables were found to be broken at a point where the cable passes over the An210-3A pulley at fuselage station 18.75, (immediately under rudder pedals.) To determine whether or not the core strands are broken, it will be necessary to remove the cables from the pulleys, bend almost double and inspect either visually or by touch, The benqing motion will cause any broken strands to pop through and protrude from the outer surface of ohe cable. The cable strand breakage was caused by too great a degree of bend around the pulley. It is recom~ended that the pulley modification, as indicated on the accompanying sketch, be accomplished on all subject aircraft. The listed instructions should be followed in performing the modifications: RB:df 1. Remove the forward belly access door. 2. Remove the right and left hand landing gear fairing. 3. Peel back the forward edge of the landing gear dust cover strips, which are doped to the metal fuselage cowl, far enoufh to uncover the pulleys on both sides of the airplane. 4. Remove the AN210-3A Pulley. 5. Cut the pulley brackets, as indicated on sketch. 6. Install two Part Number 41001-2 pulleys and two Part Number SK2 53-2 Cable Guards. 7. If rudder cables show signs of breakage, they must be replaced. 8. Redope the landing gear dust cover strips to the fuselage cowl. 9. Replace the right and left landing gear fairings, 10. Replace the forward belly 'access door. N4-IO I' NSTALL NEW CABLE GUAR.DASSHOWI-J DOTTED SK2~3-2.CABLE GUARD . ~5 •1015 STEEL R.EPLAC OLD PULLEY WITH LARGEQ PULU:Y PA N0.41001-2.. HOLE THRU AN9E.0-5G 2. REG. PULLEY BRACKET MODIFICATION STINSON 108 Z.-3Z.