EASA AD 2019-0094: Pneumatic — Bleed Monitoring Computer — Modification / Replacement | RegNotify

Airworthiness DirectiveEASA AD 2019-0094

Pneumatic — Bleed Monitoring Computer — Modification / Replacement

Published: Apr 26, 2019
Effective: May 10, 2019
Deadline: May 10, 2019

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

What to do

Operators must upload BMC software standard 4.3 or later on affected parts within 36 months from the aircraft's date of manufacture. Installation of affected BMC parts with older software is prohibited after modification or from the directive's effective date for aircraft without affected parts. Compliance must follow Airbus Service Bulletin A320-36-1078 instructions.

Summary

EASA Airworthiness Directive 2019-0094 is an airworthiness directive affecting Airbus A320-251N, A320-271N, A321-251N, A321-253N, A321-271N, and A321-272N aeroplanes. It addresses issues with the Bleed Monitoring Computer (BMC) software that regulate pneumatic bleed temperature on these aircraft models. The directive mandates modification or replacement of affected BMC software to ensure safe operation.

What changed

This directive introduces a requirement to update the BMC software to version 4.3 or later to correct temperature regulation issues that could lead to hot air leakage and bleed loss. It prohibits the installation of affected BMC parts with older software versions and requires operators to upload the improved software within a specified timeframe.

Why it matters

For aviation professionals, this directive is critical to maintaining the safety and reliability of the pneumatic system on affected Airbus A320 and A321 NEO aircraft. Failure to comply could result in degraded pneumatic system components and reduced safety margins, potentially impacting aircraft operation and maintenance schedules.

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