# Proposed AD FAA-2005-20111: Raytheon Model HS.125 Series 700A Airplanes, Model BAe.125 Series 800A Airplanes, and Model Hawker 800 and Hawker 800XP Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2005-16-02
- Products: Raytheon
- Product type: Aircraft
- Action: Supplemental notice of proposed rulemaking (NPRM); reopening of comment period.
- Published: May 9, 2005, 70 FR 24341
- Comments due: June 3, 2005
- Became: [AD 2005-16-02](https://openairdocs.org/ad/2005-16-02)
- Docket: FAA-2005-20111 (https://www.regulations.gov/docket/FAA-2005-20111, where comments are filed)
- Project: 2004-NM-154-AD
- FR document: 05-9189
- Official PDF: https://openairdocs.org/files/sha256/a9/90/a990497f7d0bdb9ba0b07f221b0c81625e304997ab574ed3389948a67a59aedb (from https://www.govinfo.gov/content/pkg/FR-2005-05-09/pdf/05-9189.pdf)
- Federal Register: https://www.federalregister.gov/documents/2005/05/09/05-9189/airworthiness-directives-raytheon-model-hs125-series-700a-airplanes-model-bae125-series-800a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/24B7F2FF7A6822F086256FFC006361DA.0001
- Page: https://openairdocs.org/proposed/FAA-2005-20111

## Summary

The FAA is revising an earlier proposed airworthiness directive (AD) for certain Raytheon Model HS.125 series 700A airplanes, BAe.125 Series 800A airplanes, and Model Hawker 800 and Hawker 800XP airplanes. The original NPRM would have required an inspection to determine the current rating of the circuit breakers of certain cockpit ventilation and avionics cooling system blowers; and replacing the circuit breakers and modifying the blower wiring, as applicable. The original NPRM was prompted by a report indicating that a blower motor seized up and gave off smoke. This action revises the original NPRM by clarifying the compliance time and removing a reporting requirement. We are proposing this supplemental NPRM to prevent smoke and fumes in the cockpit in the event that a blower motor seizes and overheats due to excessive current draw.

## Notices in this docket

- Jan 24, 2005: Notice of proposed rulemaking (NPRM). (first notice), FR document 05-1221, comments due Mar 10, 2005 (https://www.federalregister.gov/documents/2005/01/24/05-1221/airworthiness-directives-raytheon-model-hs125-series-700a-airplanes-model-bae125-series-800a)
- May 9, 2005: Supplemental notice of proposed rulemaking (NPRM); reopening of comment period., FR document 05-9189, comments due Jun 3, 2005 (https://www.federalregister.gov/documents/2005/05/09/05-9189/airworthiness-directives-raytheon-model-hs125-series-700a-airplanes-model-bae125-series-800a)

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