AD 90-23-11 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A300 B2-1A | Airworthiness Directives; AIRBUS INDUSTRIE Model A300 Series Airplanes |
| aircraft | Airbus | A300 B2-1C | Airworthiness Directives; AIRBUS INDUSTRIE Model A300 Series Airplanes |
| aircraft | Airbus | A300 B2-203 | Airworthiness Directives; AIRBUS INDUSTRIE Model A300 Series Airplanes |
| aircraft | Airbus | A300 B2K-3C | Airworthiness Directives; AIRBUS INDUSTRIE Model A300 Series Airplanes |
| aircraft | Airbus | A300 B4-103 | Airworthiness Directives; AIRBUS INDUSTRIE Model A300 Series Airplanes |
| aircraft | Airbus | A300 B4-203 | Airworthiness Directives; AIRBUS INDUSTRIE Model A300 Series Airplanes |
| aircraft | Airbus | A300 B4-2C | Airworthiness Directives; AIRBUS INDUSTRIE Model A300 Series Airplanes |
Unsafe Condition
Failure of the ram air turbine to provide hydraulic power in an emergency situation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform ground tests of the ram air turbines in accordance with Dowty Rotol Service Bulletin 29-124, Revision 3. Repeat tests at intervals not exceeding 600 hours time-in-service or 6 months, depending on modification status. Replace or overhaul the turbine if it fails the tests. Overhaul the turbine every 20,000 hours time-in-service or 10 years, whichever comes first.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to whichever occurs later between 4,000 hours time-in-service or 24 months since new or overhaul, or 600 hours time-in-service or 6 months after the AD's effective date for unmodified turbines. For modified turbines, prior to 7,500 hours time-in-service or 30 months since new or overhaul, or 1,500 hours time-in-service or 6 months after the AD's effective date. Overhaul must be done before 20,000 hours time-in-service or 10 years, or 12 months/3,000 hours after the AD's effective date.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Airbus Model A300 series airplanes, Serial Numbers 001 through 305, certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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