The FAA orders new rotor blades on 139 tour helicopters flying with uncertified parts

The Federal Aviation Administration has ordered the replacement of main rotor blades on 139 U.S.-registered Airbus Helicopters EC 130 T2 aircraft after finding the blades installed on them were never certified for that model. Airworthiness Directive 2026-19-02, a final rule effective Nov. 2, targets a specific rotor-blade part number that operators received without the paperwork needed to keep it legally maintained. The FAA warns that flying on an uncertified blade with no instructions for continued airworthiness could, left unaddressed, lead to a blade failure and “loss of control of the helicopter.”

The Blades That Arrived Without Certification

At issue is main rotor blade part number 355A11003002, which the FAA says was “delivered” to EC 130 T2 operators despite never being certified for installation on that helicopter. Certification is not paperwork for its own sake: it is what obligates a manufacturer to publish instructions for continued airworthiness, the maintenance schedule, inspection criteria and life limits that tell a mechanic when a part is safe and when it needs to come off. Without those instructions, the FAA says, a blade “cannot be properly maintained,” no matter how carefully a mechanic inspects it, because there is no approved standard to inspect it against.

The agency spells out the consequence in the rule itself: the defect, “if not addressed, could result in loss of control of the helicopter.” The document does not explain how the uncertified blades ended up on operators’ aircraft in the first place — only that they did, and that the fix now falls on the 139 owners of the affected fleet rather than on whoever originally supplied the mismatched part. The EC 130 T2’s main rotor carries three blades, so a single helicopter could need anywhere from one to all three replaced depending on which ones it received.

Replacing Rotor Blades on 139 Helicopters, at Up to $319,743 Each

The remedy is a straight swap: pull any blade carrying part number 355A11003002 and install the serviceable replacement, part 355A11003004, while permanently barring the old part number from ever going back on an EC 130 T2 again. The FAA prices a single blade at $106,581 — $106,496 in parts plus one work-hour of labor at $85 an hour — and because a helicopter can carry up to three affected blades, the per-aircraft cost can run as high as $319,743.

Multiply that across the fleet and the FAA’s published range appears: $14.8 million if every one of the 139 helicopters needs just a single blade replaced, climbing to $44.4 million if all of them need all three. Where any individual helicopter lands within that range depends on how many of its three blades carry the uncertified part number, something only a records check or physical inspection can settle before the Nov. 2 effective date.

A Citizen Group Challenged the Rule’s Timeline

One commenter, the Citizens Rulemaking Alliance, pushed the FAA on process rather than substance, asking the agency to “provide its justification for finding good cause to bypass notice and comment procedures and a shortened effective date or convert this action to an NPRM.” The FAA’s answer was that there was nothing to bypass: the rule had already gone through a full public proposal, published Nov. 18, 2025, with a 45-day comment period, and the final rule’s Nov. 2 effective date falls the standard 35 days after its Sept. 28 publication in the Federal Register.

Having resolved that objection, the FAA said plainly that “the FAA did not change this AD” between the proposed and final versions. Hollister B. Thorson, acting deputy director of the agency’s Compliance & Airworthiness Division within the Aircraft Certification Service, signed the final rule on Sept. 16, under docket number FAA-2025-3991, ten days before it reached the Federal Register. Like every airworthiness directive, this one draws its force from 14 CFR Part 39, the federal rule that lets the FAA compel a fix once it confirms an unsafe condition, a process the agency also lays out on its own page explaining how airworthiness directives work.

Sightseeing Operators Among Those Grounded by Paperwork

The FAA’s own regulatory analysis names the industry most exposed: four “Scenic and Sightseeing Transportation” operators fly EC 130 T2 helicopters, two of them small businesses running four of the fleet’s 22 tour aircraft between them. The rest of the affected fleet is split among air-transportation support services, pilot training and air-ambulance operators, according to the same small-entity breakdown. Commercial sightseeing flights like these already answer to separate FAA reporting requirements for air tour operators, layering this rotor-blade order on top of oversight the industry was already navigating.

Nothing in the rule grounds the 139 helicopters outright while inspections and swaps take place, but every one of them must be cleared of the uncertified part number before the FAA considers it airworthy again. For the operators running sightseeing tours with the smallest margins, that paperwork problem carries a price tag that, at its outer edge, tops $44 million for the fleet as a whole.

This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.

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