# STC SE2-7

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: McElroy Lynn, United States
- Description: Carburetor air temperature bulb in Marvel-Schebler MA-4-5 carburetor.
- Status date: January 1, 1960
- Product: Engine
- Certification basis: Part 21
- Data sheets: [TCDS E-274](https://openairdocs.org/tcds/E-274)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/70629850764377CF86256CE7007885B4.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE2-7

## ADs that name it (0)

None.

## Approved models (1)

- Textron Lycoming AVCO Corporation O-320 Series ([TCDS E-274](https://openairdocs.org/tcds/E-274))

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