# Proposed AD 2001-NE-44-AD: Hartzell Propeller Inc. Model HC-B3TN-5( ) Propellers

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2003-04-23
- Products: Hartzell Propellers
- Product type: Propeller
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 18, 2002, 67 FR 64321
- Comments due: December 17, 2002
- Became: [AD 2003-04-23](https://openairdocs.org/ad/2003-04-23)
- Docket: 2001-NE-44-AD
- FR document: 02-26588
- Official PDF: https://openairdocs.org/files/sha256/76/e0/76e0c3ce0872847c600930824a0284ae248249e71d4b471e6c3c82de2f6b2eba (from https://www.govinfo.gov/content/pkg/FR-2002-10-18/pdf/02-26588.pdf)
- Federal Register: https://www.federalregister.gov/documents/2002/10/18/02-26588/airworthiness-directives-hartzell-propeller-inc-model-hc-b3tn-5--propellers
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8626A453C0D5CEFF86256C5600597C2B.0001
- Page: https://openairdocs.org/proposed/2001-NE-44-AD

## Summary

The Federal Aviation Administration (FAA) proposes to adopt a new airworthiness directive (AD) that is applicable to Hartzell Propeller Inc. model HC-B3TN-5( ) propellers, with blades part number (P/N) T10176H(B,K)-5 or T10178H(B)-11(R) that are installed on Mitsubishi Heavy Industries, Ltd, MU-2 series airplanes. This proposal would require replacement of those blades with blades of the latest design. This proposal is prompted by a report of in-flight propeller blade separation that caused a severe out-of-balance condition, damage to the airplane, and resulted in engine shutdown and a safe landing. The actions specified by the proposed AD are intended to prevent propeller blade separation, damage to the airplane, and possible loss of the airplane.

## Notices in this docket

- Oct 18, 2002: Notice of proposed rulemaking (NPRM). (first notice), FR document 02-26588, comments due Dec 17, 2002 (https://www.federalregister.gov/documents/2002/10/18/02-26588/airworthiness-directives-hartzell-propeller-inc-model-hc-b3tn-5--propellers)

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