# STC SA280NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Joppa, Robert G., United States
- Description: Installation of an instrumentation boom
- Applied: March 29, 1976
- Status date: April 2, 1976
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-799](https://openairdocs.org/tcds/A-799)
- Certificate PDF: https://openairdocs.org/files/sha256/b1/4d/b14ded938d00d7c2aeb4e0e297994731dfe7df36ba4da262fa6d1a068a3e80ea
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/26136ABE15A31FE986257ADA006EB1C1.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA280NW

## 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: SA280N4 This certificate issued to: Robert G. Joppa Purt 3 « the Civil Air Reyululina, dated 11/1/49 as amended by 3-1 thru 3-2.

Original Product -Type bertificate Number: A-799 Make: Cessna Mertel: 170B Description of Type Design Change: Installation of an instrumentation boom in accordance with the Robert G. Joppa Installation Instruction No. 2000 .

Limillions and bendilend: Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation in Cessna Model 170B, Serial Number 27116 only. When the system is either installed or removed, it should be accomplished with proper entrance into the log book. A copy of this Certificate SIC SA28ONW, shall be maintained as a part of the permanent records of the modified aircraft.

Date of Application: March 29, 1976 Date Reissued:

Date of Issuance: April 2, 1976 Date Amended:

FEDERAL AVIATION By Direction of the Administrator I Sisting )

OHINISTRAIOR datinghief, Enginooring and Manufacturing Branch

47.

**PAA FOR 8110-2 (10-68)**

## Every issue (1)

- April 2, 1976: Issued, Current. [certificate](https://openairdocs.org/files/sha256/b1/4d/b14ded938d00d7c2aeb4e0e297994731dfe7df36ba4da262fa6d1a068a3e80ea)

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