AD 2018-19-19
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | SAS | Airworthiness Directives; Airbus SAS Airplanes |
Unsafe Condition
an overheat failure mode of the hydraulic engine-driven pump, which could cause a fast temperature rise of the hydraulic fluid, combined with an inoperative fuel tank inerting system, could result in uncontrolled overheating of the hydraulic system and consequent ignition sources inside the fuel tank, which, combined with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane.
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Required Actions
modifying the hydraulic monitoring and control application (HMCA) software by installing HMCA software S4.2 upgrades, as specified in Airbus Service Bulletin A350-29-P012, Revision 01, dated February 1, 2018.
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Compliance Time
Before further flight
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Affected Aircraft
All Airbus SAS Model A350-941 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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