What it approves
Installation of Lycoming GO-480-C1D6 engines and Hartzell propellers, HC-83X20-2C/9333-C3 propellers, and associated modifications
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.
SA4-111 Widgeonworks LLC 1331 Saxon Dr #170 New Smyrna Beach, FL 32169 Part 4a Civil Air Regulations A-734 Gruman G-44, G-44A, and SCAN Type 30
l. Compatibility of this design change with previously approved modifications must be determined by the installer.
2. 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.
(Limitations and Conditions continued on page 3 of 3) 09/04/1956 07/31/1961 04/29/1999 11/28/1956 10/19/1964 ✔ Michael Linegang Manager, East Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 3 Installation of Lycoming GO-480-C1D6 engines and Hartzell propellers, HC-83X20-2C/9333-C3 propellers, and associated modifications in accordance with McKinnon-Hickman Company Drawing List NO. 3.
06/06/1984
SA4-111 04/09/2026 3
SA4-111 04/09/2026 Date of Reissue continued:
January 29, 2004, October 06, 2009, August 04, 2010, April 09, 2026
An appropriate FAA (or CAA) Approved Airplane Flight Manual is required as noted below:
Aircraft modified in accordance with this Supplemental Type Certificate are eligible for the following gross weights:
1) 4700 1bs. gross weight, take-off and landing (land or water). An FAA Approved Airplane Flight Manual must be prepared and provided.
2) 5500 lbs. gross weight, take-off and landing (land) and 4700 pounds gross weight take-off and landing (water) when approved landing gear is installed such as is covered by Supplemental Type Certificate SA4-60 or SA380WE. An FAA Approved Airplane Flight Manual must be prepared and provided.
3) 4700 lbs. gross weight, take-off and landing (land) and 5500 pounds gross weight take-off and landing (water) when hull is modified to meet buoyancy requirements of CAR 4a.490(a). An approved modification of this type is covered by Supplemental Type Certificate SA4-61 or SA380WE. An FAA Approved Flight Manual must be prepared and provided.
4) 5500 pounds gross weight, take-off and landing (land and water) when the landing gear and hull modifications installed as noted in items (2) and (3) above are accomplished. An FAA Approved Airplane Flight Manual such as McKinnon Enterprises CAA Approved Flight Manual dated September 19, 1956, is required.
NOTE: When more than five (5) persons are carried, an approved emergency exit, as covered by Supplemental Type Certificate SA4-63 or SA4-967, or equivalent, must be provided.
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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 · 4
DRS keeps each issue of an STC as its own record, with its own certificate and attachments.
| Date | Status | Files |
|---|---|---|
| April 9, 2026 | Reissued, current | Certificate |
| August 4, 2010 | Reissued, earlier issue | Certificate |
| October 6, 2009 | Reissued, earlier issue | Certificate |
| January 29, 2004 | Reissued, earlier issue | Certificate |