Airworthiness Directive · Amendment 39-14207 · Raytheon Model HS.125 Series 700A Airplanes, Model BAe.125 Series 800A Airplanes, and Model Hawker 800 and Hawker 800XP Airplanes
Raytheon Model HS.125 Series 700A Airplanes, Model BAe.125 Series 800A Airplanes, and Model Hawker 800 and Hawker 800XP Airplanes
This AD applies to Raytheon Model HS.125 series 700A airplanes, BAe.125 series 800A airplanes, and Model Hawker 800 and Hawker 800XP airplanes; certificated in any category; equipped with Brailsford TBL-2.5 blowers; as identified in Raytheon Service Bulletin SB 24-3272, Revision 1, dated October 2000.
The FAA is adopting a new airworthiness directive (AD) for certain Raytheon Model HS.125 series 700A airplanes, Model BAe.125 series 800A airplanes, and Model Hawker 800 and Hawker 800XP airplanes. This AD requires inspecting 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. This AD results from a report indicating that a blower motor seized up and gave off smoke. We are issuing this AD to prevent smoke and fumes in the cockpit in the event that a blower motor seizes and overheats due to excessive current draw.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 600 flight hours or 6 months after the effective date of this AD, whichever occurs first, inspect to determine the current rating of the circuit breakers of certain cockpit ventilation and avionics cooling system blowers; and, before further flight, replace the circuit breakers and modify the blower wiring, as applicable; by doing all the actions in accordance with the Accomplishment Instructions of Raytheon Service Bulletin SB 24-3272, Revision 1, dated October 2000; except as provided by paragraphs (g) and (h) of this AD.
Where the service bulletin specifies contacting the manufacturer for information if any difficulties are encountered while accomplishing the service bulletin, this AD requires you to contact the Manager, Wichita Aircraft Certification Office (ACO), FAA.
Although the service bulletin referenced in this AD specifies to submit certain information to the manufacturer, this AD does not include this requirement.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
