# STC ST699SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Pan Avion, United States
- Description: Installation of International Inflatable Company Model 68090 emergency evacuation slide modified with Pan Avion valve assembly P/N 526-43.
- Status date: November 9, 1971
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B2C1234CA4070EB585256CC3000360D4.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST699SO

## ADs that name it (0)

None.

## Approved models (4)

- McDonnell Douglas Corporation DC-9-10 Series ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- McDonnell Douglas Corporation DC-9-21 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- McDonnell Douglas Corporation DC-9-30 Series ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- McDonnell Douglas Corporation DC-9-41 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))

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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.