The FAA has proposed an airworthiness directive that would supersede AD 2024-17-03 and require operators of 46 U.S.-registered Embraer ERJ 190 airplanes to add new or more restrictive airworthiness limitations for structures and safe life limits, following ANAC AD 2026-04-01. Comments are due December 18, 2026. FLEX AI™ complements required inspections and does not replace this proposed AD or any limit in it.
The FAA wants tighter airworthiness limitations on 46 U.S.-registered Embraer E190s. The proposal is short on drama and long on consequence: new or more restrictive limits for airplane structures and safe life limits, written into every affected operator's maintenance or inspection program.
On November 3, 2026, the Federal Register published a Federal Aviation Administration notice of proposed rulemaking (NPRM) for certain Embraer S.A. Model ERJ 190 airplanes. If adopted, the airworthiness directive would supersede AD 2024-17-03. Comments are open until December 18, 2026.
The NPRM (Federal Register Doc. 2026-22382; Docket No. FAA-2026-11822; Project Identifier MCAI-2026-00384-T; RIN 2120-AA64) applies to Model ERJ 190-100 STD, -100 LR, -100 IGW and -100 ECJ airplanes, and Model ERJ 190-200 STD, -200 LR and -200 IGW airplanes.
The current rule, AD 2024-17-03, already requires operators to revise their maintenance or inspection programs to incorporate new or more restrictive airworthiness limitations. It followed Brazil's ANAC AD 2023-12-02. Since then, ANAC superseded its own directive with ANAC AD 2026-04-01, effective April 13, 2026, which specifies new or more restrictive airworthiness limitations for airplane structures and safe life limits.
In plain terms, the proposed AD would:
The FAA states the concern directly: failure of certain system components, which could result in reduced structural integrity and system reliability of the airplane.
Hours and cycles count how much an airframe has flown. They do not say how it was loaded.
The FAA estimates the proposal would affect 46 airplanes of U.S. registry. Because operators revise programs for whole fleets rather than one tail at a time, the agency estimates cost per operator rather than per airplane: about 90 work-hours at $85 per hour, or $7,650, to revise the maintenance or inspection program for the new actions, with the same estimate for the retained actions from AD 2024-17-03. The FAA notes the hours may vary from operator to operator.
Those figures cover the document work. They do not cover what follows once new or tighter limits sit inside a program: the inspections that come due sooner, the parts that reach a safe life limit earlier than planned, and the planning that has to absorb both.
First, the FAA is expanding how it handles this kind of directive. It has used foreign authority ADs as the primary source of compliance information mostly where a service bulletin carried the work. It is now applying that process to directives that change airworthiness limitation documents. The requirement for operators does not change: revise the program to incorporate the new limitation document, and follow the limitations under 14 CFR 91.403(c) and 91.409(e).
Second, the proposal touches another rule. AD 2025-14-05 requires repetitive detailed inspections for cracking of the engine pylon lower link lugs on certain E170 and E190 airplanes, and treats incorporation of later airworthiness limitation documents as terminating action. The FAA says that accomplishing this proposed AD would terminate the requirements of AD 2025-14-05 for the ERJ 190 models listed above. Operators should map that carefully before assuming any repetitive inspection drops off their plan.
The NPRM also flags a practical trap. For airplanes previously modified, altered or repaired in the affected areas, the operator may not be able to accomplish the actions in the revised documents as written. In that case the operator must request an alternative method of compliance.
Here is what I keep coming back to. Airworthiness limitations are set on flight hours, flight cycles and calendar time, and that is how structural safety gets managed across a fleet. It works because the limits are conservative and the inspections behind them are real.
But hours and cycles count how much an airframe has flown, not how it was loaded. Two E190s at the same cycle count can have lived very different lives: different routes, different runways, different payloads, different weather, different handling. The limitation treats them the same because, for most fleets, the record cannot tell them apart.
When the limits tighten, as they would under this proposal, that gap matters more. A tighter limit pulls work forward for every airframe in scope, whether it has had an easy life or a hard one. Engineers and planners make those calls with the information they have, and for most structures that information stops at the logbook.
E190 operators already manage airworthiness limitation revisions, CDCCLs and safe life tracking as routine discipline. Many will fold this change into the next program revision cycle, check modified or repaired areas early for AMOC exposure, and reconcile what happens to AD 2025-14-05 inspections in their own records. That kind of careful program management keeps aircraft safe and schedules intact, and no sensor replaces it.
That gap between counting usage and knowing loads is part of why we are building FLEX AI™ at Platinum Eagle Aerospace: to give structures a measured history between checks, so the people responsible for an airframe have more context when a limit or a question arrives. FLEX AI™ measures strain and temperature today.
To be clear about scope: FLEX AI™ complements required inspections. It does not replace this proposed AD, its limits, or any check in it, and it does not replace any airworthiness directive.
We are pursuing an FAA STC for FLEX AI™. Platinum Eagle Aerospace is ISO 9001 certified and is working toward AS9100.
If your limits tightened tomorrow, would your records show how each airframe was actually loaded? I would like to hear how other operators think about that question.
Source: Federal Register, "Airworthiness Directives; Embraer S.A. (Type Certificate Previously Held by Yaborã Indústria Aeronáutica S.A.; Embraer S.A.) Airplanes," Doc. 2026-22382, notice of proposed rulemaking published November 3, 2026, comments due December 18, 2026. This article summarizes a public regulatory document for general information and is not maintenance or compliance guidance. The proposal may change before a final rule. Always follow the applicable AD and approved manufacturer material.
Learn more about FLEX AI™ structural health monitoring.