# Proposed AD 97-ANE-50-AD: Textron Lycoming Fuel Injected Reciprocating Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2003-14-03
- Products: Textron Lycoming
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 13, 2002, 67 FR 76702
- Comments due: February 11, 2003
- Became: [AD 2003-14-03](https://openairdocs.org/ad/2003-14-03)
- Docket: 97-ANE-50-AD
- FR document: 02-31396
- Official PDF: https://openairdocs.org/files/sha256/65/99/6599e5df18a37f6ac0b3004a4538927830c95d09947461c3472cd541071e5a39 (from https://www.govinfo.gov/content/pkg/FR-2002-12-13/pdf/02-31396.pdf)
- Federal Register: https://www.federalregister.gov/documents/2002/12/13/02-31396/airworthiness-directives-textron-lycoming-fuel-injected-reciprocating-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AE3DAE2E3314B5FB86256C8E004D1CBE.0001
- Page: https://openairdocs.org/proposed/97-ANE-50-AD

## Summary

The Federal Aviation Administration (FAA) proposes to supersede an existing airworthiness directive (AD), 98-18-12, applicable to certain Textron Lycoming reciprocating engines with certain Crane/Lear Romec "AN" rotary fuel pumps installed. That AD currently requires initial and follow-up torque check inspections of pump relief valve attaching screws. This proposal would require the same initial and follow-up torque check inspections of relief valve attaching screws, and add as a terminating action, replacement of the affected fuel pump at or before the overhaul interval, with a fuel pump having a new design valve housing. This proposal is prompted by the introduction of a new design pump relief valve housing and associated parts that provide enhanced resistance to fuel leakage, and the need for clarification of the requirements of the current AD. The actions specified by the proposed AD are intended to prevent rotary fuel pump leaks, which could result in an engine failure, engine fire, and damage to or loss of aircraft.

## Notices in this docket

- Dec 13, 2002: Notice of proposed rulemaking (NPRM). (first notice), FR document 02-31396, comments due Feb 11, 2003 (https://www.federalregister.gov/documents/2002/12/13/02-31396/airworthiness-directives-textron-lycoming-fuel-injected-reciprocating-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.