AD 99-19-37
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier Inc. | DHC-8-101 | Airworthiness Directives; Bombardier Model DHC-8-100 and -300 Series Airplanes |
| aircraft | Bombardier Inc. | DHC-8-102 | Airworthiness Directives; Bombardier Model DHC-8-100 and -300 Series Airplanes |
| aircraft | Bombardier Inc. | DHC-8-103 | Airworthiness Directives; Bombardier Model DHC-8-100 and -300 Series Airplanes |
| aircraft | Bombardier Inc. | DHC-8-106 | Airworthiness Directives; Bombardier Model DHC-8-100 and -300 Series Airplanes |
| aircraft | Bombardier Inc. | DHC-8-301 | Airworthiness Directives; Bombardier Model DHC-8-100 and -300 Series Airplanes |
| aircraft | Bombardier Inc. | DHC-8-311 | Airworthiness Directives; Bombardier Model DHC-8-100 and -300 Series Airplanes |
| aircraft | Bombardier Inc. | DHC-8-315 | Airworthiness Directives; Bombardier Model DHC-8-100 and -300 Series Airplanes |
Unsafe Condition
Failure of the main landing gear (MLG) to extend when a 'gear down' selection is made.
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Required Actions
Replace the uplock actuator with a new, improved part in accordance with de Havilland Service Bulletin S.B. 8-32-98, Revision `C,' dated July 31, 1998. Compliance must be within 12 months after the effective date of this AD.
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Compliance Time
Within 12 months after the effective date of this AD
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Affected Aircraft
Bombardier Model DHC-8-100 and -300 series airplanes, serial numbers 3 through 339 inclusive, except those with Modification 8/1828 incorporated.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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