# STC SA4-434

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Pacific Airmotive Corp, United States
- Description: 100,000 BTU (S-100) Janitrol heater in No. 1 baggage compartment.
- Status date: January 1, 1960
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-723](https://openairdocs.org/tcds/A-723)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F76DCEC7A57841A4862570D0005297AA.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-434

## ADs that name it (0)

None.

## Approved models (1)

- Lockheed Aircraft Corporation Lockheed 18 ([TCDS A-723](https://openairdocs.org/tcds/A-723))

---
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.