# Proposed AD 2003-NE-19-AD: Rolls-Royce Corporation (formerly Allison Engine Company) AE 3007A1, AE 3007A1/1, AE 3007A1/3, AE 3007A3, AE 3007A1E, and AE 3007A1P Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2003-25-08
- Products: Rolls-Royce
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 13, 2003, 68 FR 48326
- Comments due: October 14, 2003
- Became: [AD 2003-25-08](https://openairdocs.org/ad/2003-25-08)
- Docket: 2003-NE-19-AD
- FR document: 03-20573
- Official PDF: https://openairdocs.org/files/sha256/5a/cb/5acbadf7d4db541dfd29a3ad8dc52b1532daa46e76d466ee889fa7fdaa75d513 (from https://www.govinfo.gov/content/pkg/FR-2003-08-13/pdf/03-20573.pdf)
- Federal Register: https://www.federalregister.gov/documents/2003/08/13/03-20573/airworthiness-directives-rolls-royce-corporation-formerly-allison-engine-company-ae-3007a1-ae
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/49DB6C456D3D845A86256D8100506A35.0001
- Page: https://openairdocs.org/proposed/2003-NE-19-AD

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for Rolls-Royce Corporation (formerly Allison Engine Company) AE 3007A1, AE 3007A1/1, AE 3007A1/3, AE 3007A3, AE 3007A1E, and AE 3007A1P turbofan engines, with 1st to 2nd stage turbine spacers, part number (P/N) 23069627, 23070989, 23072849, or 23075364 installed. This proposed AD would reduce the life limit for 1st to 2nd stage turbine spacer, part number (P/N) 23072849, to a certain lower life limit, based on engine model. This proposed AD would also require a one-time fluorescent penetrant inspection (FPI) of 1st to 2nd stage turbine spacers P/Ns 23069627, 23070989, 23072849, and 23075364 before reaching the spacer life limit, within specified cycles-since-new (CSN), and would require replacement of the spacer if found cracked, or with bent or missing aft tangs. This proposed AD is prompted by a report that during a scheduled inspection, aft pilot tangs on a 1st to 2nd stage turbine spacer were found bent and cracked. The actions specified in this proposed AD are intended to prevent 1st to 2nd stage turbine spacer failure, leading to uncontained turbine failure, engine shutdown, and damage to the airplane.

## Notices in this docket

- Aug 13, 2003: Notice of proposed rulemaking (NPRM). (first notice), FR document 03-20573, comments due Oct 14, 2003 (https://www.federalregister.gov/documents/2003/08/13/03-20573/airworthiness-directives-rolls-royce-corporation-formerly-allison-engine-company-ae-3007a1-ae)

---
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.