AD 2009-26-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 737-600 | Airworthiness Directives; Boeing Model 737-600, -700, -700C, -800, and -900 Series Airplanes |
Unsafe Condition
The protective finishes on the forward trunnion pins for the left and right main landing gear (MLG) might have been damaged during final assembly, which could result in cracking and fracture of the pin, leading to MLG collapse.
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Required Actions
Lubricate the left and right MLG forward trunnion pins within 30 days after the effective date, and repeat at intervals not exceeding 30 days. Inspect the transition radius, lead-in chamfer, and cross-bolt bore of the MLG forward trunnion pins, and repair or replace if necessary. Overhauling the trunnion pins ends the repetitive lubrication requirement.
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Compliance Time
Within 30 days after the effective date, with subsequent lubrication intervals not exceeding 30 days until inspections and repairs/replacements are completed.
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Affected Aircraft
Boeing Model 737-600, -700, -700C, -800, and -900 series airplanes, certificated in any category, as identified in Boeing Service Bulletin 737-32-1376, Revision 2, dated August 6, 2008.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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