# Proposed AD 96-ANE-26: AlliedSignal Inc. ALF502 and LF507 Series Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 97-11-05
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 6, 1996, 61 FR 57342
- Comments due: January 6, 1997
- Became: [AD 97-11-05](https://openairdocs.org/ad/97-11-05)
- Docket: 96-ANE-26
- FR document: 96-28452
- Official PDF: https://openairdocs.org/files/sha256/17/3d/173d6c949ac5387948510dee19172fc848b7c7a58939cd7b6f9dc697c9047f16 (from https://www.govinfo.gov/content/pkg/FR-1996-11-06/pdf/96-28452.pdf)
- Federal Register: https://www.federalregister.gov/documents/1996/11/06/96-28452/airworthiness-directives-alliedsignal-inc-alf502-and-lf507-series-turbofan-engines
- Page: https://openairdocs.org/proposed/96-ANE-26

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to AlliedSignal Inc. (formerly Textron Lycoming) ALF502 and LF507 series turbofan engines. This proposal would require initial and repetitive on-wing eddy current or shop fluorescent penetrant inspections of fuel manifold assemblies for cracks, and replacement, if necessary, with serviceable parts. In addition, this AD presents an optional terminating action to the repetitive inspections by replacing the fuel manifold assembly with an assembly of a new, improved design. This proposal is prompted by reports of cracking of the fuel manifold assembly at the No. 5 and 6 scallop location. The actions specified by the proposed AD are intended to prevent cracking of the fuel manifold assembly, which could result in an engine fire.

## Notices in this docket

- Nov 6, 1996: Notice of proposed rulemaking (NPRM). (first notice), FR document 96-28452, comments due Jan 6, 1997 (https://www.federalregister.gov/documents/1996/11/06/96-28452/airworthiness-directives-alliedsignal-inc-alf502-and-lf507-series-turbofan-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.