Engines Operation in Ground Freezing Fog - Operational Limitations Revision
- Published
- Effective
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Embraer ERJ190-300 and ERJ190-400 aircraft must comply within 7 days of the directive's effective date by not starting or operating engines or taking off under specified freezing fog conditions. They must also update the aircraft flight manual with the directive's limitations and may seek alternative compliance methods approved by ANAC if necessary.
Summary
The Brazilian Airworthiness Directive 2026-01-01 is a regulatory document issued by ANAC addressing operational limitations for Embraer ERJ190-300 and ERJ190-400 aircraft equipped with PW1900 family engines. It mandates restrictions on engine operation during ground freezing fog conditions to prevent compressor stalls in PW1100 engines. This directive aims to enhance flight safety by mitigating risks of multiple engine failures during critical flight phases.
What changed
This new directive introduces operational limitations prohibiting engine start, operation, or takeoff when ground freezing fog conditions exist with visibility below 110 meters and temperatures at or below +3°C. It requires insertion of the directive into the aircraft flight manual's icing conditions section and references Embraer's Operational Bulletin 190E2-001/25 Revision 01 for detailed procedures.
Why it matters
This directive is critical for aviation professionals as it addresses a safety risk of compressor stalls in PW1100 engines under specific meteorological conditions, which could lead to multiple engine failures during takeoff. Operators, maintenance, and compliance teams must ensure adherence to these limitations to prevent potential loss of aircraft control and ensure regulatory compliance.
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