AD Amdt-39-10550

final rule
Data completeness: 70%

Airworthiness Directives; de Havilland Model DHC-8-311 and -315 Series Airplanes

AD Number
Amdt-39-10550
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 98-NM-60-AD
FR Citation
63 FR 30121

Applicability

TypeManufacturerModelDetails
aircraft de Havilland DHC-8-311 and -315 Airworthiness Directives; de Havilland Model DHC-8-311 and -315 Series Airplanes

Unsafe Condition

Failure of the ditching dams to inflate fully during an emergency water landing, which could result in water entering the airplane.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Replace the nitrogen cylinder assemblies that inflate the airplane's ditching dams with improved nitrogen cylinder assemblies.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Before further flight

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

de Havilland Model DHC-8-311 and -315 series airplanes

AI-generated summary from the source AD text. Verify against the official source before acting.

Source: Official FAA Source ↗

Retrieved: Apr 6, 2026

Rights: U.S. Government Public Domain

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