# Proposed AD 95-SW-35-AD: Bell Helicopter Textron, A Division of Textron Canada, Ltd. Model 206L-1 Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 96-23-01
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 10, 1996, 61 FR 15903
- Comments due: June 10, 1996
- Became: [AD 96-23-01](https://openairdocs.org/ad/96-23-01)
- Docket: 95-SW-35-AD
- FR document: 96-8851
- Official PDF: https://openairdocs.org/files/sha256/a2/9f/a29f796bcc4d6256da356d50e8cfd0967ad7ce55a4e0485bb1e626815e202739 (from https://www.govinfo.gov/content/pkg/FR-1996-04-10/pdf/96-8851.pdf)
- Federal Register: https://www.federalregister.gov/documents/1996/04/10/96-8851/airworthiness-directives-bell-helicopter-textron-a-division-of-textron-canada-ltd-model-206l-1
- Page: https://openairdocs.org/proposed/95-SW-35-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to Bell Helicopter Textron, A Division of Textron Canada, Ltd. (BHTC) Model 206L-1 helicopters that have a Kratos turbine outlet temperature (TOT) indicator (Kratos indicator) installed. This proposal would require replacing certain Kratos indicators. This proposal is prompted by manufacturer's tests and FAA analyses that show certain Kratos indicators may incorrectly provide low-temperature readings when battery voltage is below 10 volts. The actions specified by the proposed AD are intended to prevent false low-temperature indications, which could result in overheating of the engine turbine (turbine) and subsequent thermal fatigue damage to the turbine wheel.

## Notices in this docket

- Apr 10, 1996: Notice of proposed rulemaking (NPRM). (first notice), FR document 96-8851, comments due Jun 10, 1996 (https://www.federalregister.gov/documents/1996/04/10/96-8851/airworthiness-directives-bell-helicopter-textron-a-division-of-textron-canada-ltd-model-206l-1)

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