# STC SA21PC

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Aircraft Management Br. AFS Division FAA Pacific-Asia Region, United States
- Description: One Only STC, SN 282-87, N87: Installation of Solid State Inverters, Replacement of UHF, ADF, and VHF, and Installation of Dual Sierra-King TACAN.
- Applied: May 9, 1977
- Status date: May 26, 1977
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A2WE](https://openairdocs.org/tcds/A2WE)
- Certificate PDF: https://openairdocs.org/files/sha256/9e/3a/9e3a3730b33c7d8e41bbe2d14478476f7c0eea115759c7351a00aa378c76e4af
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2A2CB3346B4281F38625741100686E39.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA21PC

## ADs that name it (0)

None.

## Approved models (1)

- Sabreliner Corporation NA-265-40 ([TCDS A2WE](https://openairdocs.org/tcds/A2WE))

## 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.

t-/~72~?t" SA21PC ~~~~-b

**AIRCRAFT MANAGEMENT BRANCH FLIGHT STANDARDS DIVI.SION. FAA**

PACIFIC-ASIA REGION -de+ .-aJ/¥~ ~ ~ ~ ./he--O»UN? ~~~ ~ -¥'~ 4 b -¥,./he- C I V I L A I R ~u/a/e;,.~ GT ~4ak/~~ :

4';'zJ~d-J~ ~:

A2WE

ROCKWELL INTERNATIONAL CORPORATION NA~265~40 (SIN 282-87, N87) ~~~~~~~~r;

1. Installation of Solid State Inverters per FAA TIED 75-24-38

Replacement of UHF, ADF, and VHF Systems per FAA TIED 75-24-31

Installation of Dual Sierra-King TACAN Systems per FAA TIED 76-24-1 ~~~AWUi1ff~~: Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation made in Rockwell International Corporation Model NA-265-40 (SIN 282-87, N87) only.

.-1'e~~ ~ ~ RJ'- 4/k ~ ~ ~~.d ~ -7 ~~ ~#a/Q1'- ~ ~ ~-.t:~ ~~ffl-iA ~ May 9, 1977 !?}JAk..,r~ ~ ..@.ale_~;

9.8u,A?""'~~:

~nature)Gary K. Nakagawa, Chief O Engineering and~y~g~~cS~~~~~r~~sBi~~~ig~fice - This cert!Jicate may be transferred in accordance with FAR 21.47.

FAA FolM 8110-2 (10-68) tinittd oStattB or gmmca Btpartmtnt of "I:ransportation -jtdtral aniation administration g;.aU,-<I'~: May 26, 1977

## Every issue (1)

- May 26, 1977: Issued, Current. [certificate](https://openairdocs.org/files/sha256/9e/3a/9e3a3730b33c7d8e41bbe2d14478476f7c0eea115759c7351a00aa378c76e4af)

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.