# STC SA316BO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Simmons Aviation Services LLC, United States
- Description: Modification of a fuel system by the installation of a fuel pump and auxiliary fuel tank for the transfer of fuel from the auxiliary tank to the main tank.
- Applied: January 31, 2011
- Status date: December 28, 2011
- Product: Aircraft
- Certification basis: Part 21
- Data sheets: [TCDS 2A8](https://openairdocs.org/tcds/2A8)
- Certificate PDF: https://openairdocs.org/files/sha256/ed/eb/edebb22d7b51f0f24d9f8c550fdbbe1764a804cb23abb0736b00f4571ef97acf
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8268DF4BE4D91C2F862579810059378B.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA316BO

## ADs that name it (0)

None.

## Approved models (3)

- Lavia Argentina S.A. (Laviasa) PA-25 ([TCDS 2A8](https://openairdocs.org/tcds/2A8))
- Lavia Argentina S.A. (Laviasa) PA-25-235 ([TCDS 2A8](https://openairdocs.org/tcds/2A8))
- Lavia Argentina S.A. (Laviasa) PA-25-260 ([TCDS 2A8](https://openairdocs.org/tcds/2A8))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

Number SA316BO

This Certificate issued to

CAR 3 of the Civil Air Regulations.

Original Product Type Certificate Number: 2A8 Make: Piper Model: PA-25, PA-25-235, PA-25-260 Description of Type Design Change:

Modification of a fuel system by the installation of a fuel pump and auxiliary fuel tank for the transfer of fuel from the auxiliary tank to the main tank.

1. Simmons Aviation Services Airplane Flight Manual Supplement, Document Number PA25-Fuel-STC, Revision IR, dated December 22, 2011, or later FAA-approved revisions, is required and must be carried in the aircraft during all flights.

2. Instructions for Continued Airworthiness (ICA), Simmons Aviation Services Document Number PA-25-Fuel-STC, Revision IR, dated December 22, 2011, or later FAA accepted revisions, shall be made available to the operator at the time of installation.

3. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will produce no adverse affect upon the airworthiness of that 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: January 31, 2011 Date reissued:

Date of issuance: December 28, 2011 Date amended:

(Signature) Robert G. Mann Manager Boston Aircraft Certification Office

(Title) Simmons Aviation Services LLC 353 Greenhaven Road Pawcatuck, CT 06379

## Every issue (1)

- December 28, 2011: Issued, Current. [certificate](https://openairdocs.org/files/sha256/ed/eb/edebb22d7b51f0f24d9f8c550fdbbe1764a804cb23abb0736b00f4571ef97acf)

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