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EASA AD 2025-0268-E
This AD is an emergency AD, with additional letter E on the end of the AD no,sign that this AD is emergency. If you read this AD. this AD applicable for spesific Airplane that manufactured by Airbus.
Effective Date: 29 November 2025 23:59 UTC
Reference Publications : The AOT: Airbus Alert Operator Transmission (AOT) A27N022-25 Revision 00 (original issue) dated 28 November 2025.
Affective Groups of Airplanes :
1. Group 1 aeroplanes are those having an affected ELAC installed and being in one of the configurations defined in the AOT.
2. Group 2 aeroplanes are those which are not Group 1 aeroplanes.
This AD is an emergency AD, with additional letter E on the end of the AD no,sign that this AD is emergency. If you read this AD. this AD applicable for spesific Airplane that manufactured by Airbus.
Effective Date: 29 November 2025 23:59 UTC
Reference Publications : The AOT: Airbus Alert Operator Transmission (AOT) A27N022-25 Revision 00 (original issue) dated 28 November 2025.
Affective Groups of Airplanes :
1. Group 1 aeroplanes are those having an affected ELAC installed and being in one of the configurations defined in the AOT.
2. Group 2 aeroplanes are those which are not Group 1 aeroplanes.
Applicability:
A319-111, A319-112, A319-113, A319-114, A319-115, A319-131, A319-132, A319-133, A319-151N, A319-153N, A319-171N, A319-173N, A320-211, A320-212, A320-214, A320-215, A320-216, A320-231, A320-232, A320-233, A320-251N, A320-252N, A320-253N, A320-271N, A320-272N, A320-273N, A321-211, A321-212, A321-213, A321-231, A321-232, A321-251N, A321-252N, A321-253N, A321-251NX, A321-252NX, A321-253NX, A321-271N, A321-272N, A321-271NX and A321-272NX aeroplanes, all serial numbers.
on the AD document you can find why this AD release. On section Reason:
An Airbus A320 aeroplane recently experienced an uncommanded and limited pitch down event. The autopilot remained engaged throughout the event, with a brief and limited loss of altitude, and the rest of the flight was uneventful. Preliminary technical assessment done by Airbus identified a malfunction of the affected ELAC as
possible contributing factor. This condition, if not corrected, could lead in the worst-case scenario to an uncommanded elevator movement that may result in exceeding the aircraft’s structural capability.
To address this potential unsafe condition, Airbus issued the AOT, providin instructions to install a serviceable ELAC.
For the reason described above, this AD requires installation of a serviceable ELAC and prohibits installation of an affected ELAC.
this Airworthiness Directive affected to Affected ELAC: Elevator aileron computer (ELAC) ELAC B L104. We need read reference of this AD to comply the requirement of this AD which is Airbus Alert Operator Transmission (AOT) A27N022-25.
If we check in the AOT on section 3.2 INVESTIGATION, ROOT CAUSE AND CONSEQUENCES
The subsequent investigation identified a vulnerability with the ELAC B hardware fitted with software L104 in case of exposure to solar flares. This identified vulnerability could lead in the worst case scenario to an uncommanded elevator movement that may result in exceeding the aircraft structural capability.
Man Power to do this AOT is 3 manhours. with main instruction are :
Global summary of instructions:
Depending on aircraft/ELAC dataloading capabilities, to install ELAC B L103+, perform one of the following tasks:
1 - Upload L103+ software as per AMM 27-93-00-610-001, OR
2 - Remove and install: - Remove affected ELAC as per AMM Task 27-93-34-000-001, - Install ELAC with software L103+ as per AMM Task 27-93-34-400-001.
Man Power to do this AOT is 3 manhours. with main instruction are :
Global summary of instructions:
Depending on aircraft/ELAC dataloading capabilities, to install ELAC B L103+, perform one of the following tasks:
1 - Upload L103+ software as per AMM 27-93-00-610-001, OR
2 - Remove and install: - Remove affected ELAC as per AMM Task 27-93-34-000-001, - Install ELAC with software L103+ as per AMM Task 27-93-34-400-001.