# STC SA00468WI

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: NorthPoint Aviation, United States
- Description: Installation of NorthPoint XP470 (T.C.M.) engine approved per STC SE4988NM, with McCauley D3A34C401/90DFA -2, -4, -6, -8 & -10 propellers on Cessna Aircraft Models 180, 180A through 180K, Serial Nos 30000 through 50911, and 18050912 through 18053203, and associated changes in accordance with NorthPoint Aviation, Installation Instructions. C-180 S/N 30000-52700. Rev. A dated June 15, 2020 or later "FAA Approved Revisions". Airplane Flight Manual Supplement Rev. A dated June 15, 2020, or later "FAA Approved Revisions" is required for airplanes with Serial Number 52770, and 18053001 through 18053203 (53001-53203).
- Applied: May 12, 1991
- Status date: August 24, 2020
- Product: Aircraft, Small Airplane
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 5A6](https://openairdocs.org/tcds/5A6)
- Certificate PDF: https://openairdocs.org/files/sha256/95/c5/95c58ec252e11f0ce10d2b5227589dc32bf3974297f64d4e9aec54f5a959fcab
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/71861CB82A330B5E862586FC006F4958.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA00468WI

## ADs that name it (0)

None.

## Approved models (11)

- The Cessna Aircraft Company 180 ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180A ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180B ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180C ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180D ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180E ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180F ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180G ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180H ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180J ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180K ([TCDS 5A6](https://openairdocs.org/tcds/5A6))

## 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.

Part 3 of the Civil Air Regulations.

(See Type Certificate Data Sheet No. 3A13 for complete certification basis)

Installation of NorthPoint XP470 (T.C.M.) engine approved per STC SE4988NM, with McCauley D3A34C401/90DFA -2, -4, -6, -8 & -10 propellers on Cessna Aircraft Models 180, 180A through 180K, Serial Nos 30000 through 50911, and 18050912 through 18053203, and associated changes in accordance with NorthPoint Aviation, Installation Instructions. C-180 S/N 30000-52700. Rev.

A dated June 15, 2020 or later “FAA Approved Revisions”. Airplane Flight Manual Supplement Rev. A dated June 15, 2020, or later “FAA Approved Revisions” is required for airplanes with Serial Number 52770, and 18053001 through 18053203 (53001-53203).

The McCauley Propeller Models shown above should be installed on the above Cessna Aircraft Models with NorthPoint XP470 (TCM) engine, already approved per STC SE4988NM. For the above Cessna Models, the installation of D3A34C401/90DFA -() is limited to not over 88 inches and not under 78 inches.

NorthPoint Aviation 16384 Airport Road, Suite #8 Brainerd, MN 56401 5A6 Make : Cessna Model: 180, 180A through 180K Date reissued : November 20, 2003; March 21, 2019;

August 24, 2020 Date amended: February 9, 1996, December 2, 2005, June 15, 2020

(Signature)

Manager, Airframe and Administrative Branch Chicago Aircraft Certification Office

(Title)

Date of application: May 12, 1991 Date of issuance: January 15, 1992

FAA FORM 8110-2-1(10-69) PAGE 3 of 3 PAGES Number SA00468WI Date of issuance: January 15, 1992 Date Amended: February 9, 1996; December 2, 2005; June 15, 2020 Date Reissued: November 20, 2003; March 21, 2019; August 24, 2020

Placard is required to indicate the Operating Restrictions for Continuous Operation which should state: “Avoid Continuous Operation between the following rpm and manifold pressures at the stated diameters:”

Propeller Model Diameter Range (Inches) RPM Inches, MP 90DFA-2, -4 88 to 84 1900 to 2150 26 & above 90DFA -6, -8, -10 84 to 78 1900 to 2150 30 & above

Powerplant Limitations:

Engine: Continental/NorthPoint XP470

Fuel: 100 LL, Minimum Grade Aviation Gasoline

Engine Limits: Takeoff: 235 HP at 2700 RPM

Max Continuous Power – 235 HP, 2700 RPM

Powerplant Instrument Markings:

Tachometer -Red Line 2700 RPM Maximum -Green Arc 2200 to 2600 RPM Cylinder Head -Red Line 460°F Maximum Temperature Gauge

Oil Temperature Gauge -Red Line 240°F Maximum

Oil Pressure Gauge -Red Line 10 psi Minimum 100 psi Maximum -Green Arc 20 to 60 psi (Normal Operating Range)

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

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.

-----END----

## Every issue (3)

- August 24, 2020: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/95/c5/95c58ec252e11f0ce10d2b5227589dc32bf3974297f64d4e9aec54f5a959fcab)
- March 21, 2019: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/6b/36/6b36684558288e278c0a9edeea22040892a4f0fb4df488d8efddb04450febadb)
- November 20, 2003: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/38/59/3859dfd020080bad98ec11d2fe18c9afeb60c0dcbe5934f890802f1d0421bdd6)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.