Lights — Emergency Light Power Units — Replacement
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of BAe 146 and AVRO 146-RJ aeroplanes must inspect and replace any affected Honeywell emergency light power units with serviceable parts within two months from 11 November 2020. They must also ensure that no affected parts are installed or reinstalled on any aircraft after this replacement. Compliance should be carried out following the instructions in BAE Systems ISB 33-081 and Honeywell SB 60-3550-33-0001 Revision 1.
Summary
EASA Airworthiness Directive 2020-0237 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting all models and serial numbers of BAe 146 and AVRO 146-RJ aeroplanes. It addresses the replacement of Honeywell emergency light power units with part number 60-3550-1, which have shown signs of heat damage on their printed circuit boards. The directive mandates inspection and replacement of these affected emergency light power units to ensure continued airworthiness and safety.
What changed
This new airworthiness directive introduces a mandatory replacement requirement for affected Honeywell emergency light power units installed on BAe 146 and AVRO 146-RJ aircraft. It prohibits the installation or reinstallation of these affected parts and requires operators to replace them with serviceable units within two months of the effective date. The directive also references specific inspection and replacement instructions provided by BAE Systems and Honeywell service bulletins.
Why it matters
This directive is critical for aviation professionals because the affected emergency light power units have a potential failure mode that could prevent battery charging, leading to battery discharge and loss of emergency lighting power when needed. Compliance ensures the safety of emergency lighting systems, which are vital during in-flight emergencies and evacuations. Operators, maintenance organizations, and compliance teams must address this promptly to avoid regulatory non-compliance and maintain aircraft safety standards.
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