AD 2004-15-20
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Embraer | EMB-135 and -145 | Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 and -145 Series Airplanes |
Unsafe Condition
Insufficient lightning bonding at the electrical harness for the tail boom strobe light could lead to simultaneous failure of multiple avionics systems in the event of a lightning strike, resulting in reduced controllability of the airplane.
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Required Actions
Replace the electrical harness of the tail boom strobe light with a new, improved harness that has a built-in metallic overbraid. Perform an operational test on the navigation lights and the anti-collision light after the replacement. Follow the Accomplishment Instructions in the applicable service bulletin.
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Compliance Time
Within 5,000 flight hours or 30 months after the effective date of this AD, whichever occurs first.
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Affected Aircraft
EMBRAER Model EMB-135 and -145 series airplanes, as listed in EMBRAER Service Bulletin 145-33-0032, Revision 01, dated April 27, 2004, and EMBRAER Service Bulletin 145LEG-33-0004, dated November 5, 2003, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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