Main Landing Gear Locking-Stay Bracket Assembly - Inspection / Replacement
- Published
- Effective
- Deadline
- Replaces
- 2024-05-09
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must inspect the left and right main landing gear locking-stay bracket assemblies within 50 flight cycles after 21 May 2024, following Embraer Alert Service Bulletin SB170-32-A094 revision 01. If anomalies are found, replacement of the bracket assembly is required before the next flight. Installation of nuts with part number MS17826-5 on the bracket is prohibited after the directive's effective date.
Summary
Brazilian Emergency Airworthiness Directive E2024-05-09R01 mandates inspection and possible replacement of the main landing gear locking-stay bracket assembly on Embraer S.A. ERJ170-100 and ERJ170-200 airplanes, serial numbers 1700002 through 17000964. The directive addresses potential failure due to incorrect installation of self-locking nuts during maintenance, which could lead to uncommanded landing gear retraction and loss of directional control.
What changed
This directive cancels and supersedes EAD No. E2024-05-09 / 39-1561 and updates the applicability and inspection requirements for the affected Embraer ERJ170 models. It introduces detailed inspection procedures, nut replacement mandates, and prohibits installation of certain nuts on the locking-stay bracket assembly to prevent failure.
Why it matters
The directive is critical for operators and maintenance organizations to prevent landing gear malfunctions that could compromise flight safety during critical phases such as final approach. Compliance ensures continued airworthiness and reduces the risk of emergency situations caused by landing gear retraction failures.
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New ADs and bulletins for Embraer ERJ 170, ERJ170-100 and ERJ170-200, summarized like this page, every Monday.