AD 2017-15-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc., Airplanes |
Unsafe Condition
Reports of undamped main landing gear (MLG) extension in-service, caused by MLG retraction actuator rod-ends with non-conforming threads, which could lead to MLG structural failure and an unsafe asymmetric landing gear configuration.
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Required Actions
Replace the MLG retraction actuator rod-ends on both MLG assemblies, in accordance with Bombardier Service Bulletin 8-32-179, Revision A, dated March 9, 2017. Alternatively, install MLG retraction actuator assembly part numbers 10500-105, -503, or -555 on both MLGs.
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Compliance Time
Within 18 months or 2,700 flight cycles for MLG retraction actuator assemblies with 37,000 total flight cycles or more as of the effective date; within 24 months or 3,600 flight cycles for those with fewer than 37,000 total flight cycles.
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Affected Aircraft
Bombardier, Inc., Model DHC-8-102, -103, -106, -201, -202, -301, -311, and -315 airplanes, serial numbers 003 through 672 inclusive, equipped with main landing gear (MLG) retraction actuator assembly part number 10500-101, -103, -501, -551, or -553.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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