# STC SA4160NM

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Cook William H, United States
- Description: Modification to delete EDO P/N 088A2119 ventral fin assembly.
- Applied: December 1, 1987
- Status date: March 17, 1988
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A2](https://openairdocs.org/tcds/1A2)
- Certificate PDF: https://openairdocs.org/files/sha256/7d/46/7d46a4810ef26b233cce5d4b0e39f9d1251e1c46a370ed3e5e1b97fc7229f0d0
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/69C20B99BD9AB30A85256CC2000E3A00.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA4160NM

## ADs that name it (0)

None.

## Approved models (1)

- Piper Aircraft Inc. PA-18-125 (Army L-21A) ([TCDS 1A2](https://openairdocs.org/tcds/1A2))

## What the certificate says

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

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number 5A4160NH This certificate issued to: William H. Cook Purt 3 of the CIV11 ASI Regulations Original Product -Type Certificate Number: 1A2 Make: Piper Model: PA-18-125 (Seaplane) Description of Type Design Change: Modification to delete EDO P/N 088A2119 ventral fin assembly from EDO Master Drawing No. 69250, Revised 4/6/71, or later FAA approved revisions.

NOTE: This modification includes the installation of a rudder bungee (spring) on the L.H. water rudder as per W.H. Cook Drawing No. WHC 1000 dated January 11, 1988.

Limitations and Conditions: Approval of this change in type design applies to the above model aircraft only. This approval should not be extended to aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate must be maintained as part of the permanent records for the modified aircraft.

Date of Application: December 1, 1987 Date Reissued:

Date of Issuance: March 17, 1988 Date Amended:

FEDERAL NTATION By Direction of the Administrator Assistant Manager, Settle TO MINIST RAN O Aircraft Certification Office (Title)

47.

## Every issue (1)

- March 17, 1988: Issued, Current. [certificate](https://openairdocs.org/files/sha256/7d/46/7d46a4810ef26b233cce5d4b0e39f9d1251e1c46a370ed3e5e1b97fc7229f0d0)

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