AD 91-09-51
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier Inc. | DHC-8-101 | Airworthiness Directives; Boeing Of Canada, Ltd., De Havilland Division Models DHC-8-100 and DHC-8-300 Series Airplanes |
| aircraft | Bombardier Inc. | DHC-8-102 | Airworthiness Directives; Boeing Of Canada, Ltd., De Havilland Division Models DHC-8-100 and DHC-8-300 Series Airplanes |
| aircraft | Bombardier Inc. | DHC-8-103 | Airworthiness Directives; Boeing Of Canada, Ltd., De Havilland Division Models DHC-8-100 and DHC-8-300 Series Airplanes |
| aircraft | Bombardier Inc. | DHC-8-106 | Airworthiness Directives; Boeing Of Canada, Ltd., De Havilland Division Models DHC-8-100 and DHC-8-300 Series Airplanes |
| aircraft | Bombardier Inc. | DHC-8-301 | Airworthiness Directives; Boeing Of Canada, Ltd., De Havilland Division Models DHC-8-100 and DHC-8-300 Series Airplanes |
| aircraft | Bombardier Inc. | DHC-8-311 | Airworthiness Directives; Boeing Of Canada, Ltd., De Havilland Division Models DHC-8-100 and DHC-8-300 Series Airplanes |
| aircraft | Bombardier Inc. | DHC-8-315 | Airworthiness Directives; Boeing Of Canada, Ltd., De Havilland Division Models DHC-8-100 and DHC-8-300 Series Airplanes |
Unsafe Condition
Oxygen-fed, in-flight fire under the flight compartment floor due to chafing of flight crew oxygen lines and adjacent electrical feeder cables.
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Required Actions
Perform a visual inspection of the flight crew oxygen lines and adjacent electrical feeder cables within 24 hours after the effective date. If chafing is found, repair or replace damaged lines or cables prior to further flight.
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Compliance Time
Within 24 hours after the effective date of this amendment
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Affected Aircraft
Boeing Of Canada, Ltd., De Havilland Division Models DHC-8-100 and DHC-8-300 series airplanes, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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