# Proposed AD 2002-NM-200-AD: Saab Model SAAB 340B Series Airplanes Equipped With Hamilton Sundstrand Propellers

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2004-09-39
- Products: SAAB
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 18, 2002, 67 FR 69491
- Comments due: December 18, 2002
- Became: [AD 2004-09-39](https://openairdocs.org/ad/2004-09-39)
- Docket: 2002-NM-200-AD
- FR document: 02-29116
- Official PDF: https://openairdocs.org/files/sha256/1f/59/1f59470800488c54313cc82debf2e2b237d7e7274f779e0783b27ac4f1a0fe1b (from https://www.govinfo.gov/content/pkg/FR-2002-11-18/pdf/02-29116.pdf)
- Federal Register: https://www.federalregister.gov/documents/2002/11/18/02-29116/airworthiness-directives-saab-model-saab-340b-series-airplanes-equipped-with-hamilton-sundstrand
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1E120F26B06DBE3B86256C750050864E.0001
- Page: https://openairdocs.org/proposed/2002-NM-200-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Saab Model SAAB 340B series airplanes equipped with Hamilton Sundstrand propellers. This proposal would require a one-time inspection of two remote controlled circuit breakers (RCCB), located in specific electrical compartments, to identify the part number, and replacement of the RCCBs with new RCCBs having a different part number if necessary. This action is necessary to ensure removal of 35-ampere (amp) RCCBs on a 50-amp electrical circuit. Incorrect RCCBs on an electrical circuit could result in erroneous tripping of the RCCBs (even though an overload condition does not exist), premature failure of the RCCBs, loss of power to the feather pump system, and consequent reduced controllability of the airplane. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Nov 18, 2002: Notice of proposed rulemaking (NPRM). (first notice), FR document 02-29116, comments due Dec 18, 2002 (https://www.federalregister.gov/documents/2002/11/18/02-29116/airworthiness-directives-saab-model-saab-340b-series-airplanes-equipped-with-hamilton-sundstrand)

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