# STC SA2912NM

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: XP Modifications Inc, United States
- Description: Installation of a Continental IO-360-C engine, McCauley 1B235/DFC7846 propeller, Maule fuel reservoir tank and fuel shut-off valve, Continental C-145 heat exhchanger, Cessna R172K engine mount, Cessna 337 exhaust system, electric fuel pump, and relocated the fuel tank vents and battery
- Applied: March 20, 1985
- Status date: March 20, 1985
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-799](https://openairdocs.org/tcds/A-799)
- Certificate PDF: https://openairdocs.org/files/sha256/b6/b8/b6b8497f26f78b3422b5ff9e46a96e3b623b7fe1ed4b1fa24c5628c64a28aed2
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7A00CFB8A5979F99862579D000638DD2.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2912NM

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company 170B ([TCDS A-799](https://openairdocs.org/tcds/A-799))

## 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: SA2912NM This certificate issued to: XP Modifications Part 3 of the CiVil Air Regulalions., dated November 1, 1949, as amended by 3-1 through 3-2.

Original Product - Type Certificate Number: A-799 Make: Cessna Mertel: 170B Description of Type Design Change:

Installation of a Continental 10-360-C engine, McCauley 1B235/DFC7846 propeller, Maule fuel reservoir tank and fuel shut-off valve, Continental C-145 heat exchanger, Ce sna R172K engine mount, Cessna 337 exhaust system, electric fuel pump, and relocated the fuel tank vents and battery, in accordance with Thomas R. Anderson Photographs numbered 1 to 9 and FAA Form 337 dated August 8, 1984.

Data pertaining to this modification are considered inadequate for duplication in othe aircraft. This approval is limited to the installation in Cessna 170B aircraft, Serial Number 20489. A copy of this Certificate along with the Supplemental Aircraft Flight Manual, dated March 20, 1985, shall be maintained as part of the permanent records for the modified aircraft.

Date of Application: Iate wissued:

Date of Issuance: March 20, 1985 Sale umended:

FEDERAL TO MINISTRATO AVIATION By Direction of the Administrator Acting Manager Dang guiet Seattle Aircraft Certification Office (Title) 47 FAA FORM 8110-2 (10-68)

## Every issue (1)

- March 20, 1985: Issued, Current. [certificate](https://openairdocs.org/files/sha256/b6/b8/b6b8497f26f78b3422b5ff9e46a96e3b623b7fe1ed4b1fa24c5628c64a28aed2)

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