# Proposed AD FAA-2023-0939: Pratt & Whitney Canada Corp. Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2023-15-01
- Products: Pratt & Whitney Canada
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 11, 2023, 88 FR 30264
- Comments due: June 26, 2023
- Became: [AD 2023-15-01](https://openairdocs.org/ad/2023-15-01)
- Docket: FAA-2023-0939 (https://www.regulations.gov/docket/FAA-2023-0939, where comments are filed)
- Project: MCAI-2022-00743-E
- FR document: 2023-09887
- Official PDF: https://openairdocs.org/files/sha256/d2/cb/d2cba917d3a333cd758a54957ebe64cc774487f170d4199ad151fb65ddbf2351 (from https://www.govinfo.gov/content/pkg/FR-2023-05-11/pdf/2023-09887.pdf)
- Federal Register: https://www.federalregister.gov/documents/2023/05/11/2023-09887/airworthiness-directives-pratt-and-whitney-canada-corp-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2023-09887-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-0939

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Pratt & Whitney Canada Corp. (P&WC) Model PW307D engines. This proposed AD was prompted by a root cause analysis of an event involving an uncontained failure of a high-pressure turbine (HPT) 1st-stage disk, on an International Aero Engines AG Model V2533-A5 engine, that resulted in high-energy debris penetrating the engine cowling and an aborted takeoff. This proposed AD would require removing certain HPT 2nd-stage disks from service and would also prohibit installation of certain HPT 2nd-stage disks on any affected engine. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- May 11, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-09887, comments due Jun 26, 2023 (https://www.federalregister.gov/documents/2023/05/11/2023-09887/airworthiness-directives-pratt-and-whitney-canada-corp-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.