EASA AD US-2021-21-02: Superseded by FAA AD 2024-11-01

What to do

Affected operators must replace the specified PMA Ni-Cd batteries with serviceable ones or implement procedures to maintain battery capacity during storage or parking. Compliance with this directive is mandatory by December 20, 2021. Operators should consult the referenced Airbus Alert Operators Transmissions for detailed maintenance instructions and coordinate with the FAA for any clarifications.

Summary

FAA Airworthiness Directive 2021-21-02 is a final rule addressing certain Airbus SAS airplanes including models A318, A319, A320, A321, A330 series, A340 series, and A380-800 series equipped with parts manufacturer approval (PMA) nickel-cadmium (Ni-Cd) batteries. This directive targets the reduction in battery capacity caused by repetitive disconnection and reconnection of these PMA Ni-Cd batteries during airplane parking or storage.

What changed

This new airworthiness directive requires operators to replace affected PMA Ni-Cd batteries with serviceable Ni-Cd batteries or maintain the electrical storage capacity of these batteries during airplane storage or parking. It introduces specific maintenance procedures to prevent reduced battery endurance and potential failure to supply essential electrical power during abnormal or emergency conditions.

Why it matters

This directive is critical for aviation professionals because reduced battery capacity can compromise the electrical power supply during emergencies, impacting aircraft safety. Operators and maintenance teams must ensure compliance to avoid operational disruptions and maintain airworthiness. The directive also clarifies that separate ADs address OEM and PMA battery parts, affecting how maintenance programs are managed.

What to do

Summary

What changed

Why it matters

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