AD 2007-12-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | DHC-8-400 | Airworthiness Directives; Bombardier Model DHC-8-400 Series Airplanes |
Unsafe Condition
Reports of fluid loss in the No. 2 hydraulic system, causing the power transfer unit to overspeed and increasing the fluid flow within the No. 1 hydraulic system.
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Required Actions
Revise the Limitations section of the airplane flight manual to include procedures for pulling the 'HYD PWR XFER' circuit breaker in the event of the loss of all hydraulic fluid in the No. 1 or No. 2 hydraulic system.
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Compliance Time
Within 14 days after the effective date of this AD.
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Affected Aircraft
Bombardier Model DHC-8-400, DHC-8-401, and DHC-8-402 airplanes, certificated in any category; serial numbers 4001 and 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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