# STC SA3873WE

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: American Turbine Engine Co, United States
- Description: Installation of bleed air heating system.
- Status date: August 17, 1979
- 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/7234AC2B2E3F704185256CC2000C5B37.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3873WE

## ADs that name it (0)

None.

## Approved models (1)

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

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