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FAA 5G Upper C-Band Mandates Impact Aviation Radio Altimeters

NBAA joins coalition addressing FAA’s new 5G Upper C-Band mandates requiring radio altimeter upgrades by 2029-2034 to prevent interference.

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This article is based on an official statement from the National Business Aviation Association (NBAA) and regulatory filings regarding the FAA‘s January 2026 Notice of Proposed Rulemaking.

NBAA Mobilizes Coalition to Address New FAA 5G “Upper C-Band” Mandates

The National Business Aviation Association (NBAA) announced on January 16, 2026, that it has joined a broad coalition of industry stakeholders to address significant technical and logistical challenges posed by the Federal Aviation Administration’s (FAA) latest regulatory proposal. The FAA’s Notice of Proposed Rulemaking (NPRM), published on January 7, 2026, outlines strict new performance standards for radio altimeters to mitigate interference from future 5G telecommunications networks operating in the “Upper C-Band” spectrum.

This new regulatory push is driven by the “One Big Beautiful Bill Act” of 2025, federal legislation that mandates the auction of the 3.98–4.2 GHz spectrum band for commercial wireless use by July 2027. According to the NBAA, the aviation industry is now facing a tight timeline to develop, certify, and install next-generation equipment before these new wireless services go live, with initial compliance deadlines projected between 2029 and 2032.

The NBAA is collaborating with Airlines for America (A4A), original equipment manufacturers (OEMs), and the Radio Technical Commission for Aeronautics (RTCA) to ensure that the proposed rules are technically feasible within the mandated timeframe.

The Shift to Upper C-Band: A New Technical Challenge

While the aviation industry spent much of 2022 and 2023 retrofitting aircraft with filters to protect against 5G signals in the “Lower C-Band” (3.7–3.98 GHz), the new mandate addresses a distinct and more complex challenge. The upcoming expansion involves the 3.98–4.2 GHz band, which sits significantly closer to the 4.2–4.4 GHz frequency range used by radio altimeters, critical safety instruments that measure an aircraft’s height above terrain.

According to technical details released in the NPRM, the proximity of these high-power wireless signals renders previous “filter-only” solutions insufficient. The NBAA notes that the new mandate will likely require the full replacement of radio altimeter units with new hardware designed to meet stricter Minimum Operational Performance Standards (MOPS).

The “Solutions Gap”

A primary concern raised by the NBAA is the current lack of commercially available equipment to meet the FAA’s proposed standards. The industry is currently in a “solutions gap,” where the regulation demands performance specifications that manufacturers are still in the process of defining.

Heidi Williams, NBAA Senior Director of Air Traffic Services and Infrastructure, highlighted this discrepancy in the association’s statement:

“The timelines proposed will be challenging in light of solutions that haven’t yet come to market… Achieving the proposed rule’s objectives, on any timeline, will require continued collaboration between industry stakeholders, the FAA and standards organizations.”

Timelines and Compliance Deadlines

The FAA’s proposal sets a rigid schedule driven by the legislative requirement to auction the spectrum by July 2027. Based on the NPRM and industry analysis, the key milestones are as follows:

  • March 9, 2026: Deadline for industry comments on the FAA’s NPRM.
  • March 2027: Target date for RTCA Special Committee 239 to publish the new MOPS technical standards.
  • July 2027: FCC deadline to auction the Upper C-Band spectrum.
  • 2029–2032: Estimated window for new 5G services to go live; this serves as the initial compliance deadline for Part 121 (airlines) and Part 129 (foreign carriers).
  • 2031–2034: Compliance deadline for general and business aviation, which are granted an additional two years after the initial deadline.

The FAA estimates that this rule will affect approximately 58,600 aircraft in the U.S. fleet. Industry estimates cited in the reporting suggest the total cost for these fleet-wide upgrades could exceed $4.5 billion.

AirPro News Analysis: Legislating Physics

The friction between the “One Big Beautiful Bill Act” and aviation safety highlights a recurring tension in modern infrastructure development: the pace of legislation versus the pace of engineering. Unlike the previous 5G rollout, where filters could be applied to existing hardware, the Upper C-Band expansion requires the invention and certification of entirely new avionics.

With the RTCA not expected to finalize the technical standards until March 2027, just months before the spectrum is legally required to be auctioned, manufacturers will be under immense pressure. If the standards are delayed, or if the certification process hits snags, the 2029 compliance window could close rapidly, potentially risking a repeat of the flight disruptions seen during the initial 5G rollout. The “collaboration” the NBAA speaks of is effectively a race to ensure the regulatory requirements do not outpace physical manufacturing capabilities.

Industry Collaboration Efforts

To mitigate these risks, the NBAA is working closely with the RTCA Special Committee 239 (SC-239). In late 2025, this committee shifted its focus from producing a guidance document to developing a full Minimum Operational Performance Standard (MOPS). This shift is intended to ensure a robust, long-term technical solution that creates altimeters immune to the closer, more powerful 5G signals.

Airlines for America (A4A) echoed the need for cooperation in a statement regarding the new spectrum usage:

“We have been working collaboratively with the telecommunications industry, the FAA and the FCC to identify solutions that ensure our nation’s airspace remains safe while allowing the spectrum to be used.”

Frequently Asked Questions

Which aircraft are affected by the new rule?

The FAA estimates the rule covers approximately 58,600 aircraft, including commercial airliners (Part 121), foreign carriers (Part 129), and business/general aviation aircraft equipped with radio altimeters.

When must business jets comply?

General and business aviation operators have a compliance deadline set for two years after the initial commercial deadline. Based on current projections for 5G deployment, this places the business aviation deadline between 2031 and 2034.

Why can’t operators just use the filters installed in 2023?

The filters installed previously were designed for the “Lower C-Band” (3.7–3.98 GHz). The new legislation opens the “Upper C-Band” (3.98–4.2 GHz), which is much closer to the altimeter’s operating frequency. The existing filters cannot block interference from this adjacent band without degrading the altimeter’s performance, necessitating full unit replacement.

Sources:
NBAA Statement on 5G Interference
Federal Aviation Administration (NPRM Filings)

Photo Credit: NBAA

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Business Aviation

Piaggio Aerospace Marks 40 Years and 40 Avanti EVO Sales

Piaggio Aerospace celebrates the P.180 Avanti’s 40th anniversary and 40-plus Avanti EVO sales under Baykar ownership.

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On September 22, 2026, Italian manufacturer Piaggio Aerospace announced a dual milestone, celebrating the 40th anniversary of the P.180 Avanti’s maiden flight alongside surpassing 40 sales of its latest Avanti EVO variant. The announcement marks a period of stabilization for the Villanova d’Albenga-based company following its 2025 acquisition by Turkish aerospace firm Baykar.

In a press release, Piaggio Aerospace, now operating as Baykar Piaggio Aerospace S.p.A., highlighted the enduring legacy of the twin-turboprop aircraft. The original P.180 Avanti first flew in September 1986. The company noted that the fundamental design has remained consistent, describing the longevity as a testament to the aerodynamic excellence of the original concept.

Production targets and recent sales

Piaggio Aerospace has set a target to reach an annual production rate of 30 aircraft over the coming years. This production goal follows a period of renewed investment and restructuring under Baykar, which formally acquired the company on June 30, 2025, ending nearly seven years of extraordinary administration.

The milestone announcement follows a September 18, 2026, confirmation that Piaggio sold two P.180 Avanti EVOs to an unnamed Turkish operator. The aircraft will augment the operator’s existing business jet and helicopter fleet.

Piaggio Aerospace Chief Executive Officer (CEO) Cristian Toninelli stated that the agreement represents an important step for the company and the P.180 Avanti EVO program.

“We are pleased to welcome another Turkish operator to the growing community of P.180 customers and to see continued interest in an aircraft that has demonstrated its value across a broad range of markets,” Toninelli said.

Fleet evolution and Baykar integration

The Avanti EVO, the third generation of the P.180 platform, saw its first customer delivery in 2015. Since then, the manufacturer has recorded more than 40 sales of the variant. The company is also developing a next-generation model, the Avanti NX. On April 23, 2026, Piaggio secured the first order for the Avanti NX from a European operator, featuring an executive cabin with stretcher modules for air ambulance missions.

Baykar has reportedly exceeded its initial first-year targets for Piaggio Aerospace. As of April 2026, the company retained approximately 675 employees, offsetting natural departures with new hires. The Turkish firm has injected capital to sustain operations, modernize the product line, and preserve the workforce at the Italian facility.

AirPro News analysis

We view the 40th anniversary of the P.180 Avanti as more than a ceremonial milestone for Piaggio Aerospace. It serves as a clear signal to the market that the manufacturer has stabilized after a protracted period of financial uncertainty. The transition out of extraordinary administration under Baykar’s ownership appears to have provided the necessary capital to not only sustain the Avanti EVO production line but also fund the development of the Avanti NX. Achieving the stated goal of 30 annual deliveries will require significant supply chain coordination, but the recent orders from European and Turkish operators indicate that demand for the unique pusher-turboprop design remains viable in specialized mission profiles.

Sources: Piaggio Aerospace

Photo Credit: Piaggio Aerospace

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Textron Aviation Delivers 500th Cessna Citation Latitude

Textron Aviation completed its 500th Citation Latitude on Sept. 22, 2026, marking a production milestone for the top-selling midsize business jet.

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Textron Aviation Inc. completed the production of its 500th Cessna Citation Latitude business jet at its Wichita, Kansas, manufacturing facility on September 22, 2026, cementing the aircraft’s status as the highest-selling midsize business jet globally.

In a press release issued by the Textron Inc. subsidiary, the company highlighted the milestone as a reflection of sustained global demand for the nine-passenger platform. The Citation Latitude has maintained its market position by balancing short-field performance with transcontinental range and a spacious cabin environment.

Production Milestone and Workforce Recognition

The rollout of the 500th airframe underscores a steady production cadence for the midsize jet program. Textron Aviation executives attributed the program’s longevity and consistent delivery schedule to the manufacturing workforce based in Wichita.

Eric Cardinali, Senior Vice President of Manufacturing at Textron Aviation, stated that the milestone reflects the dedication of the employees building the aircraft.

The rollout of the 500th Citation Latitude is a testament to the employees who build this aircraft with dedication and pride every day. Behind every aircraft is a team committed to delivering the quality and craftsmanship our customers expect.

Lannie O’Bannion, Senior Vice President of Global Sales & Marketing, added that operators continue to select the aircraft for its versatility and value across various mission profiles.

Aircraft Specifications and Market Position

The Cessna Citation Latitude is designed to operate from shorter runways while providing midsize cabin comfort. The aircraft bridges the gap between light jets and super-midsize options, offering operators a balance of operating economics and passenger amenities.

Performance Metrics

According to company data, the Citation Latitude features a six-foot, flat-floor cabin and accommodates up to nine passengers. The aircraft requires a takeoff field length of 3,580 feet, enabling access to smaller regional airports that are often inaccessible to larger business jets. It offers a maximum cruise speed of 446 knots true airspeed and a four-passenger range of 2,700 nautical miles at high-speed cruise. The jet also supports a full-fuel payload capacity of 1,000 pounds.

Recent Corporate Momentum

The 500th Citation Latitude rollout follows a series of recent milestones and leadership transitions for the manufacturer. On August 17, 2026, Textron Aviation celebrated the delivery of its 500th Cessna Citation CJ4, marking a similar achievement for its light jet segment.

Shortly after, on August 24, 2026, the company appointed Brian Rohloff as the new President and Chief Executive Officer. The manufacturer also recently expanded its research and development portfolio, introducing the Cessna SkyCourier UX autonomous cargo concept aircraft in partnership with Merlin on September 14, 2026. The SkyCourier UX is designed for contested operational environments where traditional logistics routes are constrained.

AirPro News analysis

We view the 500th rollout of the Citation Latitude as a strong indicator of Textron Aviation’s dominance in the midsize business jet sector. Reaching 500 units is a significant threshold that demonstrates mature production capabilities and a highly stabilized supply chain. The consecutive 500th milestones for both the CJ4 and the Latitude within a five-week period highlight a robust delivery pipeline. As Brian Rohloff takes the helm as Chief Executive Officer, these established programs provide a solid revenue foundation while the company explores next-generation projects like the autonomous SkyCourier UX.

Sources: Textron Aviation

Photo Credit: Textron Aviation

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Jet Access Broker Alliance Surpasses 30 Affiliated Brokers

Jet Access Broker Alliance tops 30 brokers, boosted by veterans from Jets.com converting clients to its Reserve Card program.

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The independent broker platform of Indianapolis-based Jet Access has surpassed 30 affiliated brokers, a milestone accelerated by the recent recruitment of approximately 10 high-producing professionals formerly associated with competitor Jets.com.

In a press release issued on September 9, 2026, Jet Access announced that the influx of established brokers is driving a compounding growth effect across its vertically integrated business. The new arrivals are transitioning their existing client bases into the Jet Access ecosystem, with many clients converting into Jet Access Reserve Card holders.

Infrastructure and client conversion

The Jet Access Broker Alliance, officially launched to the wider industry in September 2025 following an internal rollout, was designed to provide independent brokers with the resources of a national aviation company while allowing them to maintain their independent identities and client relationships.

Darryn Mackenzie, Executive Vice President of Jet Access Broker Alliance, noted that the platform’s infrastructure is the primary draw for established industry veterans seeking stability for their books of business.

“When experienced, high-producing brokers who’ve built successful careers in this industry choose our platform, that tells us we’re solving a real problem for brokers,” Mackenzie said. “They didn’t come here to learn the business. They came for a platform with more infrastructure behind it.”

Mackenzie emphasized that the milestone of 30 brokers is secondary to the resulting business momentum. The integration of new brokers directly fuels the company’s fixed-rate jet card program, as clients seek the predictability offered by the Reserve Card.

Vertical integration as a competitive advantage

The parent company employs over 400 aviation professionals and operates across multiple segments of the industry. The Jet Access portfolio includes aircraft management, on-demand charter, fixed-base operators (FBOs), maintenance, repair, and overhaul (MRO) facilities, and flight schools.

Quinn Ricker, CEO and Owner of Jet Access, stated that this comprehensive suite of services allows brokers to expand their offerings beyond standard charter flights and better serve high-net-worth clients.

“They see what a fully vertically integrated aviation business can bring to them and their clients: on-demand charter, jet cards, fractional and whole aircraft ownership, all in one suite of solutions,” Ricker said. “It transforms them from brokers into full aviation advisors.”

The company noted that a growing internal fleet provides brokers and their clients with reliable aircraft availability. This operational reliability serves as a self-reinforcing recruitment tool, attracting additional brokers to the platform.

AirPro News analysis

The rapid expansion of the Jet Access Broker Alliance highlights a broader shift in the private aviation brokerage sector. We are observing that independent brokers are increasingly prioritizing platforms that offer robust, vertically integrated infrastructure over traditional, standalone brokerage models. By providing access to guaranteed availability and fixed-rate products like the Reserve Card, Jet Access is effectively utilizing its operational assets as a recruitment mechanism. The migration of a significant block of brokers from Jets.com suggests that client retention tools and fleet reliability are becoming the primary battlegrounds for securing top-tier industry talent.

Sources: Jet Access Broker Alliance

Photo Credit: Jet Access Broker Alliance

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