Electric and Electronic Common Installation — Electrical Wiring — Modification
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Airbus A319 and A320 models must modify the 1M and 2M wiring harness routing according to Airbus Service Bulletin A320-92-1127 within 60 months or 8,500 flight hours from the effective date of 25 September 2019, whichever occurs first. Alternative methods of compliance may be approved by EASA if properly substantiated. Queries should be directed to EASA or Airbus Airworthiness Office as specified in the directive.
Summary
EASA Airworthiness Directive 2019-0227 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Airbus A319 and A320 aeroplanes, specifically models A319-112, A319-115, A319-132, A320-214, A320-216, A320-232, and A320-233. The directive addresses a potential interference issue between electrical wiring harnesses and tapping units in the aircraft's lavatory smoke detection and passenger oxygen systems. This interference could compromise the delivery of passenger oxygen during emergencies.
What changed
This new airworthiness directive introduces a mandatory modification to the routing of the 1M and 2M electrical wiring harnesses to eliminate interference caused by a modified optional tapping unit design. The directive requires operators to follow Airbus Service Bulletin A320-92-1127 for the re-routing instructions. It does not supersede any previous directives.
Why it matters
This directive is critical for aviation professionals because the identified interference could lead to loss of lavatory smoke detection and passenger oxygen system commands, posing a safety risk to aircraft occupants. Operators and maintenance organizations must ensure compliance to maintain the continuing airworthiness of affected aircraft and to prevent potential in-flight emergencies. Compliance with this directive is mandatory under European regulations.
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