# STC SA4239SW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Air Freighters Intl Inc, United States
- Description: Installation of foot warmers for cockpit and crew compartment heat.
- Applied: November 12, 1980
- Status date: November 26, 1980
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A1PC](https://openairdocs.org/tcds/A1PC)
- Certificate PDF: https://openairdocs.org/files/sha256/62/c9/62c9f25328521c351c911ea67f396dc86da15bb9218cabbca717ba8a5a5030a2
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/598B8D0A8BB7C81085256CC2000E3AB9.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA4239SW

## ADs that name it (0)

None.

## Approved models (4)

- Mitsubishi Heavy Industries Ltd. YS-11A-200 ([TCDS A1PC](https://openairdocs.org/tcds/A1PC))
- Mitsubishi Heavy Industries Ltd. YS-11A-300 ([TCDS A1PC](https://openairdocs.org/tcds/A1PC))
- Mitsubishi Heavy Industries Ltd. YS-11A-500 ([TCDS A1PC](https://openairdocs.org/tcds/A1PC))
- Mitsubishi Heavy Industries Ltd. YS-11A-600 ([TCDS A1PC](https://openairdocs.org/tcds/A1PC))

## 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.

United £tate> of antrto Btpartment of transportation— federal 2toiation administration Supplemental ICgpe Certificate SA42JtSW Project T5093SW-DS JL-213 Alt Proifhtora lBto*B*tioo«i» me.

P. 0. Boat 2 Addlton, TOXM 73001 Jfo^^deAsjpw^wJ^fl&cw'twfwc^ J^MM'ttx^ 10 ^^j&e* CftV*l XreeU&cJ —— ^ti^'^^ca^e'^Utfn^f- : A1K!

Hlhcm tS-llA inat«iUiti<Mi of foot «anMrt for coekpit and crow eo«p«rtMBt hMt acoordlag to Dwnrt»g« 80*1230, Sko*U I through 3, d»t*l 8/22/80 j «id 80-2231 datod 10/10/SO, or Ut«r FAA «pprovod rovlilon.

of this in4ifioatiott wtth othor provloooly approvod «Mt W dotoridBOd by tho ln«t*lUr.

<3n&s#fr£jf<*xifaJaMdJfoA^ £$d?ri€#iiA&<€t£> ^ 1990 f I fSgfnoortot and MamtfMturlag Binmeh (Title)

47.

FAAFoiM 81 10-2(10-68) '

## Every issue (1)

- November 26, 1980: Issued, Current. [certificate](https://openairdocs.org/files/sha256/62/c9/62c9f25328521c351c911ea67f396dc86da15bb9218cabbca717ba8a5a5030a2)

---
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.