AD 2005-24-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 767-300 | Airworthiness Directives; Boeing Model 767-300 Series Airplanes |
Unsafe Condition
A hard short circuit condition between the output of certain frequency converters and their downstream circuit breakers will produce a continuous output current that could cause the undersized output wiring to overheat when the frequency converters fail to shut off.
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Required Actions
Replace the frequency converters used to supply power for medical and galley utility outlets with modified frequency converters. Alternatively, operators may deactivate the affected frequency converters, but reactivation requires modifying them in accordance with Boeing Service Bulletin 767-25-0334, Revision 1.
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Compliance Time
Before further flight
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Affected Aircraft
Boeing Model 767-300 series airplanes, certificated in any category, as identified in Boeing Service Bulletin 767-25-0334, Revision 1, dated June 19, 2003.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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