# STC SA978WE

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: GE Engine Services-Corporate Aviation Inc.
DBA Garrett Aviation Services, United States
- Description: Installation of turbosupercharged Lycoming O-540-C4B5 engines.  Approved for serial numbers 27-2505 and subsequent.
- Applied: February 4, 1965
- Status date: August 17, 2004
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 1A10](https://openairdocs.org/tcds/1A10)
- Certificate PDF: https://openairdocs.org/files/sha256/e6/80/e6806c58ccb85f020517e46f4b39322c182409bf0106b669fbd287f65ab2be70
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/81597DB107EA039D86256F3500517323.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA978WE

## ADs that name it (4)

- [AD 2005-01-10](https://openairdocs.org/ad/2005-01-10): Turbocharger Oil Reservoir · Piper PA-23-235, PA-23-250, PA-23-250 (Navy UO-1) and 1 more. Effective Feb 22, 2005. Cited in the text
- [AD 2002-19-03](https://openairdocs.org/ad/2002-19-03): Crankshaft · Lycoming Engines IO-540-A1A5, IO-540-AA1A5, IO-540-AA1B5 and 81 more. Effective Sep 20, 2002. Named in the applicability
- [AD 74-06-01](https://openairdocs.org/ad/74-06-01) (historical): AiResearch Turbochargers · PA-23-235, PA-23-250 (Navy UO-1) and PA-E23-250 with STC SA852WE or 2 others. Effective Oct 2, 1974. Named in the applicability
- [AD 68-21-03](https://openairdocs.org/ad/68-21-03): Exhaust Tailpipe Assemblies · Piper PA-23-250 (Navy UO-1) and PA-E23-250 with STC SA909WE or SA978WE. Effective Oct 28, 1968. Named in the applicability

## Approved models (2)

- The New Piper Aircraft Inc. PA-23-250 (Navy UO-1) ([TCDS 1A10](https://openairdocs.org/tcds/1A10))
- The New Piper Aircraft Inc. PA-E23-250 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))

## 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 SA978WE

This Certificate issued to GE Engine Services-Corporate Aviation, Inc.

d/b/a Garrett Aviation Services 6201 West Imperial Highway Los Angeles, California 90045 Part 3 of the Civil Air Regulations Original Product Type Certificate Number :

1A10 PIPER PA-23-250 & PA-E23-250, S/N 27-2505 and subsequent Description of Type Design Change : Installation of turbocharger system on Lycoming IO-540-C4B5 engines on make and models listed in accordance with FAA sealed AiResearch Drawing No. 101-P23-197, Rev. K, dated June 16, 1965, and The Nordam Group Drawing No. 10ND79100, Revision C, dated April 21, 2004, or later FAA approved revisions.

Limitations and Conditions : The engines must be previously modified in accordance with Supplem ental Type Certificate No. SE21WE. The approval of this change in ty pe design applies to the basic Piper Models PA-23-250 and PA-E23-250 aircraft, S/N 27- 2505, and subsequent. FAA approved AiResearch Airplane Flight Manual Supplem ent dated Septem ber 24, 1965, revised October 17, 1995. This approval should not be extended to other specific aircraft of these m odels on which other m odifications are incorporated unless it is first determ ined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. If the holder agrees to perm it 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: February 4, 1965

Date of issuance: June 16, 1965

Date reissued: April 9, 2003

Date amended: September 24, 1965, August 17, 2004

( Signature) Manager, Propulsion Branch Los Angeles Aircraft Certification Office ( Title)

## Every issue (1)

- August 17, 2004: Amended, Current. [certificate](https://openairdocs.org/files/sha256/e6/80/e6806c58ccb85f020517e46f4b39322c182409bf0106b669fbd287f65ab2be70)

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