AD 2017-04-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Embraer | Various | Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (Embraer) Airplanes |
Unsafe Condition
Main airspeed indication discrepancies during flight resulting from ice blockages in certain pitot total pressure lines.
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Required Actions
Inspect for tube misalignment of the pitot number 1 and pitot number 2 tube assembly lines, and take corrective actions if necessary; install or replace (as applicable) a tube ribbon heater on the pitot number 1 and pitot number 2 tube assembly lines; revise the airplane flight manual (AFM) to provide certain procedures and airspeed tables for the flightcrew.
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Compliance Time
Before further flight
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Affected Aircraft
Empresa Brasileira de Aeronautica S.A. (Embraer) Model EMB-135BJ, EMB-135ER, EMB-135KE, EMB-135KL, EMB-135LR, EMB-145, EMB-145EP, EMB-145ER, EMB-145LR, EMB-145MP, EMB-145MR, and EMB-145XR airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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