AD 2004-18-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 737-600 | Airworthiness Directives; Boeing Model 737-600, 737-700, 737-700C, 737-800, and 737-900 Series Airplanes |
Unsafe Condition
High electrical resistance in the squib firing circuit could result in insufficient electrical current to fire the fire extinguisher bottle squib and discharge the fire extinguishing agent, which could lead to an uncontrolled engine fire.
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Required Actions
Measure the electrical resistance of the dual ground studs of the support brackets for the fire extinguisher bottle located in the left main landing gear wheel well. If the resistance exceeds the maximum allowed value, perform corrective actions as specified in Boeing Alert Service Bulletin 737-26A1118, Revision 1, dated April 8, 2004. Any applicable corrective action must be accomplished prior to further flight.
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Compliance Time
Within 90 days after the effective date of this AD.
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Affected Aircraft
Boeing Model 737-600, 737-700, 737-700C, 737-800, and 737-900 series airplanes, as listed in Boeing Alert Service Bulletin 737-26A1118, Revision 1, dated April 8, 2004; 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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