# Proposed AD FAA-2011-0982: General Electric Company (GE) Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2012-03-12
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 18, 2011, 76 FR 64291
- Comments due: December 2, 2011
- Became: [AD 2012-03-12](https://openairdocs.org/ad/2012-03-12)
- Docket: FAA-2011-0982 (https://www.regulations.gov/docket/FAA-2011-0982, where comments are filed)
- Project: 2011-NE-09-AD
- FR document: 2011-26825
- Official PDF: https://openairdocs.org/files/sha256/84/e2/84e2186487da02f1e4db44db877e796bc1c381be298e70944b0563c8aa16131d (from https://www.govinfo.gov/content/pkg/FR-2011-10-18/pdf/2011-26825.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/10/18/2011-26825/airworthiness-directives-general-electric-company-ge-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/55EFCB024FD0219B8625792D004872FE.0001
- Page: https://openairdocs.org/proposed/FAA-2011-0982

## Summary

We propose to adopt a new airworthiness directive (AD) for all GE CF6-80C2A1, CF6-80C2A2, CF6-80C2A3, CF6-80C2A5, CF6-80C2A5F, CF6- 80C2A8, CF6-80C2B1, CF6-80C2B1F, CF6-80C2B1F1, CF6-80C2B1F2, CF6- 80C2B2, CF6-80C2B2F, CF6-80C2B3F, CF6-80C2B4, CF6-80C2B4F, CF6-80C2B5F, CF6-80C2B6, CF6-80C2B6F, CF6-80C2B6FA, CF6-80C2B7F, CF6-80C2B8F, CF6- 80C2D1F, CF6-80C2K1F, and CF6-80C2L1F turbofan engines, including engines marked on the engine data plate as CF6-80C2B7F1. This proposed AD was prompted by a report of a supplier shipping a batch of nonconforming No. 3 bearing packings that had incorrect cooling holes, and by subsequent reports of nonconforming No. 3 bearing packings being installed on engines in service. This proposed AD would require a one- time inspection of the No. 3 bearing packing for an incorrect cooling hole size and, if it is found nonconforming, removing the packing and removing certain engine rotating life-limited parts, if they were operated with the wrong packingfor a specified number of cycles. We are proposing this AD to prevent an uncontained failure of the high- pressure compressor (HPC) rotor or the low-pressure turbine (LPT) rotor or both, which could cause damage to the airplane.

## Notices in this docket

- Oct 18, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-26825, comments due Dec 2, 2011 (https://www.federalregister.gov/documents/2011/10/18/2011-26825/airworthiness-directives-general-electric-company-ge-turbofan-engines)

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