Airworthiness DirectiveEASA AD BR-2020-01-01

Superseded by ANAC AD 2020-09-01

Published: Jan 10, 2020
Effective: Jan 9, 2020
Deadline: Jan 9, 2020
Replaces: 2011-05-05
Replaces: 2019-11-08

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What to do

Operators must inspect the mass-balance weights and attachments of elevators, ailerons, and rudder according to Embraer Service Bulletin No. 505-55-A004 revision 5 or later. Inspections must be completed within specified timeframes depending on aircraft group classification, ranging from 3 calendar days to 60 calendar days or flight hours as defined. Any corrosion findings must be reported to Embraer within 96 hours. Maintenance programs must be updated within 10 days of the directive's effective date to include new inspection tasks and intervals.

Summary

Brazilian Emergency Airworthiness Directive EAD No. 2020-01-01 is issued by the Agência Nacional de Aviação Civil (ANAC) and applies to all Embraer EMB-505 aircraft, regardless of serial number. This directive addresses corrosion issues found in the mass-balance weights of control surfaces including elevators, ailerons, and rudder. It mandates inspections, replacements as necessary, and updates to maintenance programs to ensure continued airworthiness and flight safety.

What changed

EAD No. 2020-01-01 cancels and supersedes previous directives AD No. 2011-05-05 and EAD No. 2019-11-08. It expands the applicability to additional aircraft, imposes more restrictive compliance times for certain groups, and introduces new maintenance requirements for the Airworthiness Limitations Section of the maintenance program.

Why it matters

This directive is critical for aviation professionals because corrosion in mass-balance weights can cause unbalanced control surfaces, potentially leading to flutter and loss of airplane control. Operators and maintenance organizations must comply promptly to mitigate safety risks and avoid operational disruptions. Compliance ensures the aircraft remain safe and airworthy under regulatory standards.

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