AD 2009-25-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A330-243 | Airworthiness Directives; Airbus Model A330-243 Airplanes and Model A330-341, -342, and -343 Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Airbus Model A330-243 Airplanes and Model A330-341, -342, and -343 Airplanes |
Unsafe Condition
High Pressure/Intermediate Pressure (HP/IP) oil vent tubes are prone to be affected by carbon deposit or to be damaged by their outer heat shields, leading to a fire inside or outside the vent tube and resulting in IP Turbine (IPT) disc drive arm fracture and thus IPT disc overspeed. If not corrected, IPT disc overspeed could lead to an uncontained engine failure, i.e., multiple turbine blade failure or HP/IP turbine disc burst.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Activate the Intermediate Pressure Turbine Overspeed (IPTOS) protection function by Data Entry Plug (DEP) reprogramming, which limits the IPT speed (Engine Thrust) when overheat is detected in IPT. This applies to all A330 airplanes fitted with RR Trent 700 engines.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within a specified time frame as outlined in the AD, which is not detailed in the provided text.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Airbus Model A330-243, -341, -342, and -343 airplanes, all manufacturing serial numbers (MSN), except those on which Airbus Modification 56722 has been embodied in production.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.