# STC SE3873NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Franklin Aircraft Engines Inc., United States
- Description: Installation of two AiResearch induction air intercoolers.
- Applied: March 30, 1987
- Status date: May 25, 2022
- Product: Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 1E4](https://openairdocs.org/tcds/1E4)
- Certificate PDF: https://openairdocs.org/files/sha256/40/8c/408cf29b7dc2066e339480460d29251521c44055c0aecb2c361316611c57a285
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/273E6C9068F2E2528625886300548523.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE3873NM

## ADs that name it (0)

None.

## Approved models (1)

- Textron Lycoming AVCO Corporation IO-540-R1A5 ([TCDS 1E4](https://openairdocs.org/tcds/1E4))

## 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.

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7LWOH SE3873NM Franklin Aircraft Engines, Inc.

136 Racquette Drive Fort Collins, CO 80524 Part 3 Civil Air Regulations 1E4 AVCO Lycoming IO-540-R1A5 Installation of two AiResearch induction air intercoolers. Required data:

1. Turbo Commanche 260 Intercooler Instructions, Revision A, dated July 27, 1987, or later FAA Approved revision.

1. Data pertaining to this modification are considered inadequate for duplication in other aircraft.

2. This approval is limited to Piper Model No. PA-24-260 S/N 24-4374 only, as per STC SA3872NM.

3. Compatibility of this design change with previously approved modifications must be determined by the installer.

March 30, 1987 2/26/1993, 3/31/1993, 4/27/1995, 5/25/2022 July 27, 1987 Tina Miller Manager, Program Managment Section Wichita ACO Branch (AIR-7K5) 2

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Date oI transfer:

SE3873NM 2

## Every issue (2)

- May 25, 2022: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/40/8c/408cf29b7dc2066e339480460d29251521c44055c0aecb2c361316611c57a285)
- April 27, 1995: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/ec/32/ec32b319198d6ffbbee0b491e6f7b8b78b9dafa16c3502f508c9ebaf782f2b1e)

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