# STC SL211RM

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Raven Industries, Inc, United States
- Description: Modification of suspension system and skirt of Raven S-55A hot air balloon envelope to achieve compatibility with Barnes Balloon Works gondola Models 4.0 and 4.5 and Model T3-017 burner system.
- Status date: February 18, 1981
- Product: Aircraft, Balloon
- Certification basis: Part 21
- Data sheets: [TCDS A15CE](https://openairdocs.org/tcds/A15CE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6C5D5DEB29382BE085256CC2006223D0.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SL211RM

## ADs that name it (0)

None.

## Approved models (1)

- Aerostar International S-55A ([TCDS A15CE](https://openairdocs.org/tcds/A15CE))

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