# STC SR00031NY

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Howell Instruments, Inc, United States
- Description: Installation of a Howell engine performance assurance monitoring system.
- Status date: April 15, 1994
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H1NE](https://openairdocs.org/tcds/H1NE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0156992FDA7AC51485256CC20062243E.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SR00031NY

## ADs that name it (0)

None.

## Approved models (1)

- Sikorsky Aircraft Corporation S-76B ([TCDS H1NE](https://openairdocs.org/tcds/H1NE))

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