AD 2009-23-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A318-111 | Airworthiness Directives; Airbus Model A318-111, -112, A319, A320, and A321 Series Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Airbus Model A318-111, -112, A319, A320, and A321 Series Airplanes |
Unsafe Condition
Two incidents have occurred due to the lack of visibility on the Primary Flight Display (PFD) of the Traffic Alert and Collision Avoidance System (TCAS) indications.
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Required Actions
Install the improved EIS2 standard S7, which modifies the vertical speed indication to improve TCAS Resolution Advisory legibility by changing the needle color and increasing the width of the TCAS green band.
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Compliance Time
Within 12 months of the effective date (December 14, 2009).
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Affected Aircraft
Airbus Model A318-111, -112, A319, A320, and A321 series airplanes equipped with EIS2 standard S4.2 (DMC disk part number F1419418) installed by Airbus Modification 34571 or Airbus Service Bulletin A320-31A1220, except those with Airbus Modification 35270 or Airbus Modification 36725.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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