# STC SA647CE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Barbara or Bob Williams, United States
- Description: Installation of Lycoming O-360-A1A 180 h.p. engine and constant speed propeller.
- Applied: January 15, 1969
- Status date: September 5, 1979
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12)
- Certificate PDF: https://openairdocs.org/files/sha256/d4/c4/d4c433bb606c02accd8e70b03165cf186b9b1901a8732a047e1adb3cda898185
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/92D04B35752DDA8486257EEA00679D90.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA647CE

## ADs that name it (1)

- [AD 82-07-02](https://openairdocs.org/ad/82-07-02): Engine Crankcase Breather · Lycoming O-360-A1A engine and Hartzell HC-C2YK-1B/7666A-2… (Avcon Industries STC SA1324CE or 14 others). Effective Apr 8, 1982. Named in the applicability

## Approved models (5)

- Textron Aviation Inc. 172I ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Textron Aviation Inc. 172K ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Textron Aviation Inc. 172L ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Textron Aviation Inc. 172M ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Textron Aviation Inc. 172N ([TCDS 3A12](https://openairdocs.org/tcds/3A12))

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (2)

- September 5, 1979: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/d4/c4/d4c433bb606c02accd8e70b03165cf186b9b1901a8732a047e1adb3cda898185)
- January 10, 1978: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/2c/15/2c152ff7604554af5db817af48bdc47482e02dc749695f31ae5e477163db8761)

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