# STC ST486SO

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Piedmont Aviation Inc, United States
- Description: Installation of external APU control panel.
- Status date: February 16, 1972
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A1PC](https://openairdocs.org/tcds/A1PC)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/54230FAD106DDDDE85256CC300036044.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST486SO

## ADs that name it (0)

None.

## Approved models (1)

- Mitsubishi Heavy Industries Ltd. YS-11A-500 ([TCDS A1PC](https://openairdocs.org/tcds/A1PC))

---
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.