# Airworthiness Directives; Honeywell International Inc. (Formerly AlliedSignal) Model RE220 (RJ) Auxiliary Power Units
> **Rule** · Final rule. · Published 2003-07-30 · Effective 2003-09-03 · 68 FR 44609
## Document
- **Document number:** 03-19309
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 68 FR 44609
- **Publication date:** 2003-07-30
- **Effective date:** 2003-09-03
- **FAA docket:** Docket No. 2002-NE-42-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that is applicable to Honeywell International Inc. (formerly AlliedSignal) model RE220 (RJ) auxiliary power units (APUs) part number (P/N) WE3800770-2. This amendment requires replacing the existing fuel nozzles with new design fuel nozzles, making reidentification updates to the APU identification plate, and operating the APU to perform a visual inspection for fuel leaks. This amendment is prompted by reports received by the FAA of cracks occurring in the existing APU fuel nozzles leading to fuel leaks. The actions specified by the AD are intended to prevent APU compartment fires and fuel vapor explosion.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/07/30/03-19309/airworthiness-directives-honeywell-international-inc-formerly-alliedsignal-model-re220-rj-auxiliary)
---
*AI Analytics · CC0 1.0*