# STC SA3747NM

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Marple Aviation, Inc, United States
- Description: Installation of a Janitrol cabin heater Model B4050.
- Status date: November 5, 1987
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A31EU](https://openairdocs.org/tcds/A31EU)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F275AE8F158AEBE085256CC2000C5A24.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3747NM

## ADs that name it (0)

None.

## Approved models (3)

- Partenavia Costruzioni Aeronauticas S.p.A. P68 TC “Observer” ([TCDS A31EU](https://openairdocs.org/tcds/A31EU))
- Partenavia Costruzioni Aeronauticas S.p.A. P68 “Observer” ([TCDS A31EU](https://openairdocs.org/tcds/A31EU))
- Partenavia Costruzioni Aeronauticas S.p.A. P68C ([TCDS A31EU](https://openairdocs.org/tcds/A31EU))

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