AD 2011-18-17
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc. Model DHC-8-400 Series Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Bombardier, Inc. Model DHC-8-400 Series Airplanes |
Unsafe Condition
Failures of the main landing gear (MLG) stabilizer extension springs may cause the MLG to not lock in the down-lock position, leading to the collapse of the main landing gear.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 30 days after the effective date, revise the maintenance program by incorporating Task 320100-213 as specified in Bombardier Temporary Revision (TR) MRB-45, dated October 6, 2009.
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Compliance Time
Within 30 days after the effective date of this AD.
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Affected Aircraft
Bombardier, Inc. Model DHC-8-400, -401, and -402 airplanes, certificated in any category, serial numbers 4001, 4003 and subsequent.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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