# STC ST311CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Rosemount Aerospace Inc, United States
- Description: Installation of a Rosemount model 0851HH pitot probe.
- Status date: March 21, 1995
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A2NM](https://openairdocs.org/tcds/A2NM)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E19D6961B9D9E70185256CC300035FB1.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/ST311CH

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 757-200 ([TCDS A2NM](https://openairdocs.org/tcds/A2NM))

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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.