# Proposed AD 90-ANE-25-AD: Withdrawal -- General Electric Company (GE) CF6-45 and CF6-50 Series Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Withdrawn
- Products: General Electric
- Product type: Engine
- Action: Proposed rule; withdrawal.
- Published: June 21, 2001, 66 FR 33214
- Comments due: June 13, 2001
- Docket: 90-ANE-25-AD
- FR document: 01-15574
- Official PDF: https://openairdocs.org/files/sha256/3c/9d/3c9de634488ee33fc1d8fba93effb071ca711cf7a8a2be2b9322e591a937c8a7 (from https://www.govinfo.gov/content/pkg/FR-2001-06-21/pdf/01-15574.pdf)
- Federal Register: https://www.federalregister.gov/documents/2001/06/21/01-15574/airworthiness-directives-general-electric-company-ge-cf6-45-and-cf6-50-series-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/12D0A507F76777F186256B290068CF81.0001
- Page: https://openairdocs.org/proposed/90-ANE-25-AD

## Summary

This action withdraws a notice of proposed rulemaking (NPRM) that proposed to revise an existing airworthiness directive (AD), applicable to GE CF6-45 and CF6-50 series turbofan engines. That action would have revised an existing AD to require the same inspections on reworked high pressure compressor (HPC) rear shafts as those HPC rear shafts covered by the current amendment. That proposal was prompted by the need to ensure that the additional reworked HPC rear shafts receive the same inspections as part numbers covered by the current amendment. Since that NPRM was issued, the FAA has determined that the repetitive inspections of reworked HPC rear shafts will instead be incorporated into the final rule, AD 2001-12-20, for a new design HPC air duct. Accordingly, the proposed rule is withdrawn.

## Notices in this docket

- Oct 12, 2000: Notice of proposed rulemaking (NPRM). (first notice), FR document 00-26141, comments due Nov 16, 2000 (https://www.federalregister.gov/documents/2000/10/12/00-26141/airworthiness-directives-general-electric-company-ge-cf-645-and-cf6-50-series-turbofan-engines)
- Jun 21, 2001: Proposed rule; withdrawal., FR document 01-15574, comments due Jun 13, 2001 (https://www.federalregister.gov/documents/2001/06/21/01-15574/airworthiness-directives-general-electric-company-ge-cf6-45-and-cf6-50-series-turbofan-engines)

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