# STC SA881NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: A C & E Aviation Inc, United States
- Description: Installation of Hartzell propeller, Hartzell spinner, governor and associated systems
- Applied: October 7, 1979
- Status date: January 7, 1980
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A24](https://openairdocs.org/tcds/3A24)
- Certificate PDF: https://openairdocs.org/files/sha256/00/47/00477523800fff2826ef571686499386bc52cf55ca3117afd084ac6c691fae78
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C7B36347570FD72986257A3E0050DC82.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA881NW

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company A185F ([TCDS 3A24](https://openairdocs.org/tcds/3A24))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SAB81Nw This certificate issued to: AC&E Aviation Part 3 of the CiViI Air Regulations Original Product - Type Certificate Number 3A24 Make: Cessna Model: A185F Description of Type Design Change: Installation of Hartze11 mode1 HC-C3YF-1RF/ F8468A-6R propeller, Hartzell C-3535-1 spinner, governor and associated systcms on a Continental I0-520-n engine in accordance with propeller installation instructions in Hartzell FAA Approved Propeller Owner's Manual 115J.

Limitations and Conditions: Approval of this change in type design applies basically to the above model aircraft only. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifications, including changes in type design, e effectABeA will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate, Addendum No. SA881NW, and Hartzell Owner's Manual 115J shall be aintained as part of the permanent records for the modified aircraft Riggin^ TUMINISTRAIOS Chief, Engineering and Manufacturing Branch (Title) SA881NW The conditions and limitations of Type Certificate Data Sheet Number 3A24 apply except where superseded by the following:

Supplemental Type Certificate Data Sheet, which is part of STC SA881NW, prescribes the conditions and limitations under which the product for which the STC was issued meets the airworthiness requirements of the Federal Aviation Regulations.

Supplemental Type Certificate HOLDER: AC&E Aviation CESSNA MODEL A185F (NORMAL CATEGORY) AS MODIFIED BY STC SA881NW Engine: Continental I0-520-D (Same) Fuel: 100/130 octane minimum grade aviation gasoline Engine Limits: Maximum continuous power: 2700 rpm 285 Hp Propeller and Hartzell HC-C3YF-1RF/F8468A-6R Propeller Limits: Diameter: Maximum 78"; Minimum 77" Pitch Setting: High 32.6 - 1.0 °; Low 10.0° ‡ 0.1° Propeller Governor: See Data Sheet 3A24 Powerplant Instrument Markings: 0il Temperatuze to 240°F - normal operating range Green Arc 120 Oil Pressure:

Green Arc 30 to 60 psi - normal operating range Red Line 20 psi minimum; 100 psi maximum Tachometer:

Green Arc 2300 to 2550 rpm - normal operating range Yellow Arc 500 to 2300 rpm - caution Red Line 2700 rpm - maximum Fuel Flow:

Green Arc 7 to 17 gph - normal operating range Red Line 25 gph - maximum at sea level Cylinder Head Temperature: fed 11Ac 460°฿ - maximum- normal operating range G. G. Range: See Data Sheet 3A24

- END -

91.

**PAGE 3 OF 3 PAGES C FAA AC 73-2651**

## Every issue (1)

- January 7, 1980: Issued, Current. [certificate](https://openairdocs.org/files/sha256/00/47/00477523800fff2826ef571686499386bc52cf55ca3117afd084ac6c691fae78)

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