# Proposed AD 2003-NE-59-AD: General Electric Company CT58 and T58 Series Turboshaft Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2005-04-10
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 26, 2004, 69 FR 8875
- Comments due: April 26, 2004
- Became: [AD 2005-04-10](https://openairdocs.org/ad/2005-04-10)
- Docket: 2003-NE-59-AD
- FR document: 04-4101
- Official PDF: https://openairdocs.org/files/sha256/aa/28/aa284e5919383c71d6ff136e9764a7969f1910561ea4e04661b7358655d781ae (from https://www.govinfo.gov/content/pkg/FR-2004-02-26/pdf/04-4101.pdf)
- Federal Register: https://www.federalregister.gov/documents/2004/02/26/04-4101/airworthiness-directives-general-electric-company-ct58-and-t58-series-turboshaft-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F35C0C8AD123B76F86256E46005BA633.0001
- Page: https://openairdocs.org/proposed/2003-NE-59-AD

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for General Electric Company (GE) CT58-140-1, CT58-140-2, and T58-GE-5, -10, -100, and -402 series turboshaft engines with certain serial numbers (SNs) of stage 1 compressor disks, part number (P/N) 5001T20P01, installed. This proposed AD would require removing certain stage 1 compressor disks from service before reaching a reduced low-cycle-fatigue (LCF) life limit. This proposed AD results from two reports of low blade tip clearances in the compressor. We are proposing this AD to prevent LCF cracking and failure of the stage 1 compressor disk, an uncontained engine failure, and damage to the helicopter.

## Notices in this docket

- Feb 26, 2004: Notice of proposed rulemaking (NPRM). (first notice), FR document 04-4101, comments due Apr 26, 2004 (https://www.federalregister.gov/documents/2004/02/26/04-4101/airworthiness-directives-general-electric-company-ct58-and-t58-series-turboshaft-engines)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.