Airworthiness DirectiveEASA AD BR-2024-02-01

Kidde Aerospace & Defense - Overheat Detection System Sensing Elements - Inspection / Replacement

Published: Feb 5, 2024
Effective: Feb 12, 2024
Deadline: Feb 12, 2027

Embraer ERJ 190 300 400

AI-generated summary of the official EASA document. Verify against the PDF before acting.

What to do

Operators of Embraer ERJ 190-300 and ERJ 190-400 aircraft must inspect the ODS sensing elements on APU bleed lines, wing anti-ice supply ducts, and wing bleed systems within 7,500 flight hours or 36 months from February 12, 2024, whichever occurs first. If defects or abnormal indications are found, troubleshooting and sensor replacement must be performed following Embraer Service Bulletin 190E2-36-0002 revision 02. If replacement sensors are unavailable, deactivation procedures must be followed, ensuring at least one operational loop. Compliance with operator MEL restrictions is required if multiple loops are inoperative.

Summary

Brazilian Airworthiness Directive AD No. 2024-02-01 issued by the Agência Nacional de Aviação Civil (ANAC) mandates inspection and possible replacement of Kidde Aerospace & Defense Overheat Detection System (ODS) sensing elements on Embraer S.A. ERJ 190-300 and ERJ 190-400 aircraft. The directive addresses potential failures in ODS sensing elements produced before January 31, 2021, which could lead to undetected thermal bleed leaks and pose fire risks. It requires operators to inspect specific bleed lines and wing anti-ice and bleed system sensing elements to ensure flight safety.

What changed

This new Brazilian Airworthiness Directive introduces mandatory inspections and replacements of ODS sensing elements on Embraer ERJ 190-300 and ERJ 190-400 aircraft due to a manufacturing quality escape affecting sensors produced before January 31, 2021. It establishes detailed procedures for troubleshooting, sensor replacement, and deactivation if replacements are unavailable, ensuring the detection system's reliability.

Why it matters

This directive is critical for aviation professionals as it addresses a latent failure risk that could lead to ignition sources in fuel tanks, potentially causing severe damage and safety hazards. Operators and maintenance teams must comply to maintain aircraft airworthiness and avoid operational restrictions. Compliance ensures continued safe operation and adherence to regulatory requirements.

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