What it approves
Installation of Hartzell Model HC-B3TN-5FL/LT10673 or LT10673B propellers.
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 SA546GL
This certificate, issued to Twin Commander Aircraft LLC 1176 Telecom Drive Creedmoor, NC 27522
Part 3 of the Civil Air Regulations.
Original ProductType Certificate Number: 2A4 Make: Twin Commander Aircraft LLC Model: 690, 690A, and 690B
Description of the Type Design Change: Installation of Hartzell Model HC-B3TN-5FL/LT10673, or LT10673B, propellers in accordance with Gulfstream American Maintenance Manual M690001-2 for the 690 and Gulfstream American Maintenance Manual M690002-2 for the 690A and 690B aircraft.
Limitations and Conditions: Approval of this change in type design applies to the above model aircraft only.
This approval should not be extended to other aircraft of this model unless the installer determines that the relationship between this change and any other previously incorporated approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. Airplane Flight Manual Supplement (AFMS) dated August 10, 1981, or subsequent FAA-approved revision is required.
A copy of this certificate must be maintained as part of the permanent records for the modified aircraft.
If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.
Date of application: June 29, 1981 Date reissued: 2/14/90; 5/26/04; 6/15/04; 11/12/09; 7/24/14 Date of issuance: August 10, 1981 Date amended: 2/14/90; 5/26/04; 6/15/04
(Signature)
Manager, Seattle Aircraft Certification Office (Title)
ADs that name this STC · 0
An AD can apply because an STC is installed, or mention one in its text.
Approved models · 3
Every issue · 3
DRS keeps each issue of an STC as its own record, with its own certificate and attachments.
| Date | Status | Files |
|---|---|---|
| July 24, 2014 | Reissued, current | Certificate |
| November 12, 2009 | Reissued, earlier issue | Certificate |
| May 26, 2004 | Reissued, earlier issue | Certificate |