What it approves
Modify tail rotor pitch change mechanism to add duplex bearing, (P/N 47-641-131-1) in place of single row bearing. Approved for Bell models 47D1, 47G, and 47G-2 with 47-640-044 tail rotor gear box assembly.
What the certificate says
From the PDF’s text layer, without the form’s printed wording. Layout and order may differ; the PDF is the record.
Number SH1007SW This certificate issued to
Part 6 of the Civil Air Regulations.
Modify tail rotor pitch change mechanism to add duplex bearing (P/N 47-641-131-1) in place of single row bearing in accordance with K Copter Duplex Bearing Installation K-007 dated March 7, 1969.
This modification approved for Bell Models 47D1, 47G and 47G-2 with 47-640-044 tail rotor gear box assembly.
The installer must determine whether this design change is compatible with previously approved modifications. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.
Texas Helicopter Co., Inc.
780 S. Elmwood Ave.
Le Sueur, MN 56058 H-1 Make : Bell Helicopter Textron Model : 47D1, 47G, 47G-2 Date of application : March 05, 1969
Date of issuance : March 14, 1969
Date reissued : 3/4/86; 7/27/87; 4/30/04;
12/15/10
Date amended : 11/22/74 Rev. 1
( Signature) Scott A. Horn, Acting Manager Rotorcraft Certification Office, Southwest Region
( Title)
FAA Form 8110-2-1(10-69) Page 2 of 2
ADs that name this STC · 0
An AD can apply because an STC is installed, or mention one in its text.