# Proposed AD FAA-2018-0735: International Aero Engines Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2018-24-01
- Products: International Aero Engines
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 7, 2018, 83 FR 45359
- Comments due: October 22, 2018
- Became: [AD 2018-24-01](https://openairdocs.org/ad/2018-24-01)
- Docket: FAA-2018-0735 (https://www.regulations.gov/docket/FAA-2018-0735, where comments are filed)
- FR document: 2018-19174
- Official PDF: https://openairdocs.org/files/sha256/60/f4/60f46a2313b6ee1f3e426578ecb13845a304c7465b0073accec7769b78266d98 (from https://www.govinfo.gov/content/pkg/FR-2018-09-07/pdf/2018-19174.pdf)
- Federal Register: https://www.federalregister.gov/documents/2018/09/07/2018-19174/airworthiness-directives-international-aero-engines-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9ECB46E0D7BEF6FD862583010045B02D.0001
- Page: https://openairdocs.org/proposed/FAA-2018-0735

## Summary

We propose to adopt a new airworthiness directive (AD) for all International Aero Engines (IAE) PW1133G-JM, PW1133GA-JM, PW1130G-JM, PW1127G-JM, PW1127GA-JM, PW1127G1-JM, PW1124G-JM, PW1124G1-JM, and PW1122G-JM turbofan engines with certain low-pressure turbine (LPT) 1st- and 3rd-stage disks installed. This proposed AD was prompted by a report of manufacturing defects found on delivered LPT 1st- and 3rd- stage disks. This proposed AD would require removing the LPT 1st- or 3rd-stage disk from service and replacing with a part eligible for installation. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Sep 7, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-19174, comments due Oct 22, 2018 (https://www.federalregister.gov/documents/2018/09/07/2018-19174/airworthiness-directives-international-aero-engines-turbofan-engines)

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