AD 99-23-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A319-111 | Airworthiness Directives; Airbus Model A319, A320, and A321 Series Airplanes |
| aircraft | Airbus | A319-112 | Airworthiness Directives; Airbus Model A319, A320, and A321 Series Airplanes |
| aircraft | Airbus | A319-113 | Airworthiness Directives; Airbus Model A319, A320, and A321 Series Airplanes |
| aircraft | Airbus | A319-114 | Airworthiness Directives; Airbus Model A319, A320, and A321 Series Airplanes |
| aircraft | Airbus | A319-131 | Airworthiness Directives; Airbus Model A319, A320, and A321 Series Airplanes |
| aircraft | Airbus | A319-132 | Airworthiness Directives; Airbus Model A319, A320, and A321 Series Airplanes |
| aircraft | Airbus | A320-111 | Airworthiness Directives; Airbus Model A319, A320, and A321 Series Airplanes |
| aircraft | Airbus | A320-211 | Airworthiness Directives; Airbus Model A319, A320, and A321 Series Airplanes |
| aircraft | Airbus | A320-212 | Airworthiness Directives; Airbus Model A319, A320, and A321 Series Airplanes |
| aircraft | Airbus | A320-214 | Airworthiness Directives; Airbus Model A319, A320, and A321 Series Airplanes |
Unsafe Condition
Defective seals in the wheel steering selector valve of the hydraulic control unit for the nose landing gear could result in uncommanded nose landing gear wheel rotation, which could reduce controllability of the airplane.
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Required Actions
Modify the electro-distributor for the nose wheel steering servo-control as specified in Airbus Service Bulletin A320-32-1197. Compliance is required within 12 months of the effective date of this AD.
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Compliance Time
Within 12 months of the effective date
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Affected Aircraft
Airbus Model A319, A320, and A321 series airplanes except those with Modification 23740 or compliance with Service Bulletin A320-32-1197.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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