FR 2025-00387

Overview

Title

Airworthiness Directives; Embraer S.A. (Type Certificate Previously Held by Yaborã Indústria Aeronáutica S.A.; Embraer S.A.) Airplanes

Agencies

ELI5 AI

The big airplane safety people found a problem with some Embraer airplanes' wings that might make the planes wobbly, so they made a rule that these planes need to be checked and fixed to make sure they're safe to fly. People can tell the safety folks what they think about this new rule until the end of February 2025, and the rule starts at the end of January 2025.

Summary AI

The Federal Aviation Administration (FAA) has issued a new rule to replace a previous airworthiness directive for Embraer S.A. Model ERJ 190-300 airplanes due to concerns about wear on the wing hinge bearing assembly of the aileron surfaces. The directive requires detailed inspections and repairs to prevent excessive wear that could lead to dangerous vibration levels and reduce the plane's controllability. This updated rule incorporates revisions from Brazil's aviation authority and does not apply reporting requirements for these procedures. The public is invited to comment on the directive by February 28, 2025, through stated contact methods, and the rule will be effective on January 29, 2025.

Abstract

The FAA is superseding Airworthiness Directive (AD) 2023-23- 10, which applied to all Embraer S.A. Model ERJ 190-300 airplanes. AD 2023-23-10 required repetitive inspections of the press-fitted bushings of the wing ailerons for migration and broken sealant, measurements of the distance between the aileron surfaces and hinge fittings, functional checks of the backlash of the wing aileron control system, and all applicable related investigative and corrective actions. Since the FAA issued AD 2023-23-10, it was determined that certain requirements needed to be clarified. This AD continues to require all actions of ANAC AD 2023-06-01 with revised compliance requirements, as specified in an Ag[ecirc]ncia Nacional de Avia[ccedil][atilde]o Civil (ANAC) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.

Type: Rule
Citation: 90 FR 2923
Document #: 2025-00387
Date:
Volume: 90
Pages: 2923-2926

AnalysisAI

Summary of the Document

The document is an Airworthiness Directive (AD) issued by the Federal Aviation Administration (FAA) concerning the Embraer S.A. Model ERJ 190-300 airplanes. This directive aims to replace an earlier AD due to concerns about potential wear and tear on the wing aileron surfaces, which might compromise the airplane's safety through excessive vibration and reduced controllability. The directive requires specific inspections and repairs to mitigate this risk and includes compliance instructions from Brazil's aviation authority, Agência Nacional de Aviação Civil (ANAC). Public comments on the directive are welcomed until February 28, 2025, and the rule will become effective on January 29, 2025.

Significant Issues or Concerns

The document is laden with complex legal and technical jargon that may not be easily understood by individuals without aviation or regulatory expertise. It refers to multiple Airworthiness Directives and amendments, which could create confusion for readers unfamiliar with these regulatory processes. Furthermore, acronyms like ANAC, FAA, and MCAI are used without prior definition, potentially baffling those new to aviation terminology.

Another concern is the heavy reliance on incorporated references, suggesting that readers might need to consult numerous external documents to fully grasp the compliance requirements. This could prove cumbersome and might deter thorough public engagement or comprehension unless the reader is already familiar with aviation regulations.

Impact on the Public

For the general public, especially those not directly involved in the aviation industry, this directive might seem distant since it deals with specific technical safety measures for particular aircraft models. The document does not suggest immediate safety concerns for general air transport, particularly as it notes no currently affected U.S.-registered airplanes. This indicates minimal direct impact on domestic flight safety or operations at present.

Impact on Specific Stakeholders

For stakeholders in the airline and aviation maintenance sectors, particularly those dealing with Embraer aircraft, this directive represents a critical update requiring attention to specific aircraft maintenance practices. The directive mandates specific inspections and possible corrective actions to prevent mechanical failures, thereby helping to ensure the continued safety and airworthiness of the airplanes in question.

Manufacturers like Embraer and their associated operators could face increased compliance and maintenance costs, especially if any affected aircraft are later imported or registered in the U.S. Despite the absence of immediate compliance requirements for U.S. airlines due to the lack of registered affected aircraft, potential future importation could lead to heightened operational scrutiny and adjustments.

By complying with these requirements, stakeholders contribute to maintaining trust in the safety of air travel, which could ultimately lead to broader public confidence in airline operations as safe and secure. Conversely, the intricate compliance process might require additional resources and time for affected parties to interpret and implement effectively.

Issues

  • • The document contains complex legal and technical jargon, which might be difficult for a layperson to understand without specialized knowledge.

  • • The reference to multiple ADs (Airworthiness Directives) and amendments may confuse readers not familiar with aviation regulatory processes.

  • • Several acronyms such as ANAC, FAA, and MCAI are used without an initial explanation, which could be confusing for those not familiar with the aviation industry standards.

  • • The document seems heavily reliant on incorporated references, potentially requiring readers to access multiple external documents to fully understand the compliance requirements, which could be cumbersome.

  • • The phrase 'required for compliance' (RC) is used extensively, which might confuse the reader without a clear definition or context for when deviations are permissible.

  • • The document notes no affected U.S.-registered airplanes, which implies that immediate compliance costs are null; however, future costs for potentially imported aircraft are not explicitly detailed.

Statistics

Size

Pages: 4
Words: 4,447
Sentences: 125
Entities: 344

Language

Nouns: 1,414
Verbs: 342
Adjectives: 198
Adverbs: 36
Numbers: 313

Complexity

Average Token Length:
4.66
Average Sentence Length:
35.58
Token Entropy:
5.68
Readability (ARI):
21.72

Reading Time

about 17 minutes