# STC SQ00039NY

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Seaflight Industries Inc., Canada
- Description: Modification of EDO Model 58-4580 floats to 4953 lbs. displacement
- Applied: June 9, 1993
- Status date: September 22, 1993
- Product: Appliance
- Certification basis: Part 21
- Data sheets: [TCDS EDO 105](https://openairdocs.org/tcds/EDO%20105)
- Certificate PDF: https://openairdocs.org/files/sha256/b2/52/b2524cbe2cd6d27fedc00160b17eccd9fc0923123c8fa2c170dfc096074d5ddb
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID199544221720230912130432.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SQ00039NY

## ADs that name it (0)

None.

## Approved models (1)

- EDO Commercial Corp. 58-4580 ([TCDS EDO 105](https://openairdocs.org/tcds/EDO%20105))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

Hamited States of Suerica Department of Transportation Federal Aviation Administration Supplemental Type Certificate Nember 5900039Nx This certificate issued to: Seaflight Industries Inc.

R.R. #4, S10, C29 Vernon, British Columbia Canada V1T 617 Certifies that the change in the type design for the folowing product with the di mil lios and con tilins.

therefor as specifud hereon meets the airvorhiness nequiements of Pust 4a of the civi1 Aviation Regulations Original Product -İypebertifiale Number: 105 Make: EDO Model: 58-4580 Seaplane Floats Description of Type Design Change:

Modification of EDO Model 58-4580 floats to 4953 lbs displacement in accordance with Seaflight Industries Incorporated Master Drawing List SI4930-001, Sheet 1 of 1, Issue C dated May 10, 1993.

1. Identification Plate as defined in Seaflight Industries Inc.drawing No. SI4930-021, Sheet 1 of 1, revision E, dated May 5, 1993.

2. This modified EDO Model 58-4580 float is interchangeable with the existing EDO Model (see continuation sheet)

Date of Application: June 9, 1993 Sinte reissued:

Date of Issuance: September 22, 1993 Sate unended:

FEDERAL AVIATION By Direction of the Administrator Irwin N. Brumer (Signalure) TOMINISTRANO Mgr. New York Aircraft Certification Office (Title) 47

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SQ00039NX Limitations and Conditions: (continued):

Max Seaplane Gross Weight = 5,370 lbs Max Stall Speed Vso = 63 mph or Max Seaplane Gross Weight = 5,500 lbs Max Stall Speed Vso = 62 mph

3. This approval should not be incorporated in any aeronautical product of this specific model on which other approved modifications are incorporated, unless it is determined that the interrelationship between this change and any of those previously incorporated approved modifications will not introduce any adverse effect upon the airworthiness of the NOTE: This modified EDO Model 58-4580 float is not interchangeable with an EDO Model 58-4580 float.

--END-—-

47.

PAGE 2OF 2 PAGES c FAA AC 82-03578

## Every issue (1)

- September 22, 1993: Issued, Current. [certificate](https://openairdocs.org/files/sha256/b2/52/b2524cbe2cd6d27fedc00160b17eccd9fc0923123c8fa2c170dfc096074d5ddb)

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