Fuel Level Alert System Aboard F-5 jets is 'unsafe,' Navy says

If you’ve spent any time around the cockpit of an F-5 Tiger, you know that situational awareness is everything.

While the F-5 jet is a legendary adversary platform, the current fuel monitoring system leaves a bit to be desired. Right now, pilots are only alerted to low fuel when they hit the 350-410 lbs threshold—a stage that the Navy identifies as an “unsafe condition.” The Naval Air Systems Command (NAVAIR) is looking to change that and is turning to industry for help.

The Mission: Upgrading the F-5 Fuel Interface

NAVAIR’s PMA-226 recently issued a Sources Sought notice to identify potential solutions for a custom fuel alert system for both the single-seat F-5N and the dual-seat F-5F. The fuel level alert system is also known as “Bingo” or “Joker” fuel bugs.

The goal is to enable pilots to configure, set, and activate mission-specific fuel alerts during pre-flight. By allowing aircrew to dial in their custom thresholds, they can better manage their energy state throughout a sortie, rather than relying solely on a low-fuel warning light.

What the Government is Looking For

NAVAIR is prioritizing Commercial Off-The-Shelf (COTS) solutions. The goal is to minimize non-recurring engineering (NRE) costs and development time by utilizing tech that is already designed and qualified for F-5 configurations.

Here are the key performance requirements NAVAIR is seeking:

• Fuel Monitoring: Real-time tracking of fuel levels (0-2,500 lbs) via the existing capacitance signal system.
• Custom Thresholds: The ability to set "Bingo" and "Joker" levels in 100 lb increments.
• Ergonomics: Easy, tactile adjustments (like a knob) that allow pilots to adjust levels in-flight or pre-flight.
• Form Factor: If the solution requires replacing the current fuel indicator (part number 14-64900-9), the new unit must be the same size and weight to ensure seamless integration.

The Timeline at a Glance

NAVAIR has laid out an ambitious but defined schedule for this project:

• NRE Period: Max 18 months from award.
• Airworthiness Approval: Max 4 months post-validation.
• Quantity: An initial request for 15 units.

This is a market research effort, not a formal request for proposals, but it’s a vital step for companies looking to be part of the F-5 program's future. Companies have until June 8 to respond and support the work.

The F-5 was developed by Northrop Grumman in February 1965. Today, the fleet is primarily used as adversary aircraft for training. The fleet is managed by NAVAIR’s Adversary and Specialized Aircraft Program Office (PMA-226).

NOAA Seeks ‘Loaner’ Engines for Aging Aircraft Fleet

The National Oceanic and Atmospheric Administration (NOAA) has issued a formal Request for Information (RFI) seeking potential suppliers for loaner Pratt & Whitney aircraft engines, a move that highlights the increasing logistical challenges of maintaining the agency's critical aerial survey fleet.

The agency’s Office of Marine and Aviation Operations, operating out of the Aircraft Operations Center (AOC) in Lakeland, Fla., is soliciting market research to secure a supply of standby PT6A-60A and PT6A-27 engines. These powerplants are essential for the operation of the agency’s seven-aircraft fleet—comprising three Beechcraft King Airs and four De Havilland DHC-6 Twin Otters—which perform environmental mapping, atmospheric research, and survey missions across the United States, Canada, and the Caribbean.

2025 Request

In August, NOAA released a similar request for “new and overhauled engines” for its King Air and Twin Otter aircraft. In that request, the AOC mandated the immediate procurement of at least two overhauled PT6A-60A engines and two PT6A-27 engines to be delivered within six months after contract award. NOAA estimated a contract award for those engines in the third or fourth quarter of fiscal year 2025.

A Fleet Under Pressure

The RFI released on Thursday requires the loaner engines to be available by Sept 1, underscoring a growing vulnerability in NOAA’s mission profile. By prioritizing the procurement of "loaner" units, the agency is signaling a move toward preemptive mitigation to avoid the costly downtime and unscheduled maintenance cycles that currently threaten to ground essential aircraft.

For a fleet tasked with monitoring climate change, tracking hurricane patterns, and conducting coastal assessments, aircraft availability is non-negotiable. However, the reliance on older airframe and engine combinations—such as the PT6A series—raises broader questions regarding the long-term sustainability of NOAA’s current logistical strategy.

The Search for Authorized Partners

NOAA’s search for contractors is strictly limited to authorized Pratt & Whitney distributors, further narrowing the field of potential vendors. The agency is requesting detailed capability statements from industry players, seeking evidence that private entities can bridge the gap in their mission-critical maintenance schedules.

While the RFI is officially categorized as market research rather than a formal solicitation for proposals, the urgency of the language suggests that the government is acutely aware of the risks posed by supply chain instability. The requirement for these engines to arrive by September implies a deadline-driven environment in which any failure to secure these assets could directly affect the continuity of environmental data collection.

Environmental Oversight at Risk

Data gathered by the NOAA fleet is foundational to global climate models and disaster preparedness. Any disruption to these aircraft—whether due to engine failure or the inability to source parts—has an immediate ripple effect on the scientific community’s ability to observe environmental shifts in real-time.

As the agency continues to gather information from potential manufacturers, the focus remains on whether commercial entities can provide the agility required of a federal agency operating in some of the world's most demanding flight environments.

Interested parties have until June 4 to submit their capability statements to NOAA’s Eastern Acquisition Division.

Avelo Airlines Extends Flight Schedules Through Early January for Winter Travel Season

Avelo Airlines announced on Wednesday that it has officially extended several flight schedules to accommodate travelers planning winter holidays and year-end vacations. The airline has extended its winter flight plans through Jan. 5, across several key operational hubs.

The schedule extension applies to multiple airports in the company’s network, including the Philadelphia/Delaware Valley region’s Wilmington Airport (ILG), the Concord-Padgett Regional Airport (USA) in North Carolina, and the Tweed-New Haven Airport (HVN) in Connecticut.

Trevor Yealy, Head of Commercial at Avelo Airlines, framed the announcement as a strategic effort to assist travelers with early holiday planning.

"It’s time to start planning winter and holiday travel, and we are excited to extend Avelo's ILG flight schedule through early January," Yealy said in a company press release. "With Avelo's everyday low fares and industry-leading reliability, it's the perfect time for travelers to get a head start on booking their holiday vacations or weekend getaways."

Expanding Service Networks

The extension covers a broad array of the airline's nonstop routes. From Wilmington Airport (ILG), Avelo maintains 11 nonstop destinations, primarily focused on Florida, South Carolina, and Puerto Rico, including Fort Lauderdale, Orlando, and San Juan.

The Concord-Padgett Regional Airport (USA) schedule expansion includes eight destinations, such as Cleveland, Indianapolis, and New York/Long Island. Meanwhile, the Tweed-New Haven Airport (HVN)—Avelo’s significant base in the Northeast—will continue its service to 28 nonstop destinations, including routes to major hubs like Chicago, Atlanta, and Dallas-Fort Worth.

Additionally, Avelo has finalized the extension of its schedule for its Florida-based operations, covering six airports across the state, including Tampa International Airport and Southwest Florida International Airport.

Growth and Reliability Metrics

Since its inaugural flight on April 28, 2021, Avelo has sought to position itself as a low-cost, high-reliability carrier. According to company data, the airline has transported over 9.5 million customers across more than 75,000 flights. As of the latest update, the carrier serves 34 destinations spanning 14 states and Puerto Rico.

Man Pleads Guilty After Opening Emergency Exit on JetBlue Aircraft

A 24-year-old Puerto Rican man pleaded guilty on May 12 to federal charges stemming from an incident aboard a JetBlue aircraft in 2025, during which he opened an emergency exit door while the plane was taxiing for takeoff.

Angel Luis Morales Torres appeared in U.S. District Court, where he entered a plea of guilty to one count of damaging or disabling an aircraft. The incident, which occurred on Jan. 7, 2025, disrupted a flight scheduled to depart from Boston Logan International Airport for Puerto Rico.

According to federal prosecutors, the aircraft was on the taxiway preparing for departure when Morales stood up from his seat. Witness accounts state that he ran down the aisle toward an empty emergency exit row and began attempting to force the door open.

A flight attendant intervened to restrain Morales; however, he succeeded in opening the door. The activation of the emergency exit caused the aircraft’s inflatable escape slide to deploy, immediately rendering the plane inoperable and forcing the flight to cease. Morales was subsequently subdued by a fellow passenger before he could cause further disruption.

Morales was indicted by a federal grand jury in March 2025 in connection with the event.

The charge of damaging or disabling an aircraft is a serious federal offense. Under U.S. law, a conviction for this crime carries a maximum sentence of 20 years in federal prison, a fine of up to $250,000, and up to 3 years of supervised release.

U.S. District Court Senior Judge F. Dennis Saylor has scheduled the sentencing hearing for Aug. 4, at which time the court will determine Morales' final penalties.

Hunnu Air Becomes First to Operate Beechcraft King Air 360 in Mongolia

The Mongolian landscape is poised for a significant technological upgrade in air transportation. In a strategic move to bolster its regional travel offerings, Mongolian charter operator Hunnu Air has placed an order for a Beechcraft King Air 360, marking the aircraft's debut in the country.

The acquisition, with delivery scheduled for late 2027, underscores a trend of fleet modernization within Mongolia’s private and commercial aviation sectors. As the country seeks to leverage its vast landscape for tourism and business development, the arrival of the King Air 360 is expected to provide the necessary flexibility for missions.

A Strategic Addition to the Fleet

The King Air 360 is a globally recognized workhorse, known for its versatility in commercial, special mission, and regional operations. For Hunnu Air, the aircraft will serve as a cornerstone for its VIP commuter services and high-end tourism packages.

“The Beechcraft King Air 360 builds on decades of proven capability, offering the mission flexibility operators need across commercial, special mission, and regional operations,” stated Mike Shih, vice president of Strategy & Sales at Textron Aviation, the parent company of Beechcraft. “This addition enhances Hunnu Air’s ability to reach more destinations and meet the growing needs of travelers across Mongolia.”

Hunnu Air recently made headlines for its fleet diversification, including orders for two passenger Cessna SkyCouriers—which will also represent the first of their kind in Mongolia—and an additional Cessna Grand Caravan EX to complement its existing fleet of the same model.

These acquisitions, combined with the company’s December addition of a second Embraer E195-E2, demonstrate a clear pivot toward modernizing the operator’s capabilities. The E195-E2 was delivered directly from the manufacturer Embraer.

The Beechcraft Advantage: Reliability Meets Modernity

The choice of the King Air 360 is not merely a matter of capacity but one of operational utility. Since the King Air family first took to the skies in 1964, more than 7,900 of these turboprops have been delivered, logging a staggering 66 million flight hours globally. Its endurance in the market is largely attributed to its ability to operate effectively in diverse environments, from short, unpaved runways to high-altitude regional hubs.

The King Air 360, the latest iteration of this historic family, introduces several advanced features designed to reduce pilot workload while elevating the passenger experience. Among its most notable technological advancements is the digital pressurization controller. This system automatically schedules cabin pressurization during both climb and descent, a feature that significantly eases the burden on flight crews and ensures a smoother transition for passengers.

By maintaining a more comfortable cabin environment, the aircraft minimizes the physical fatigue typically associated with long-distance regional travel. As Mongolia is characterized by its wide-reaching geography, where travel between major industrial or tourist sites can span hundreds of kilometers, this emphasis on cabin comfort is a crucial value proposition for Hunnu Air’s premium clientele.

Reshaping Mongolian Travel

The Mongolian aviation market is currently undergoing a period of transformation. Historically, internal travel has been challenging due to the country’s vast, sparsely populated terrain and extreme weather conditions. By incorporating high-performance, versatile aircraft like the King Air 360 and the Cessna SkyCourier, operators like Hunnu Air are effectively closing the gap between the capital, Ulaanbaatar, and remote tourist destinations or mining hubs.

The inclusion of the King Air 360 into the Hunnu Air fleet is expected to create a tiered service structure. With the Embraer E195-E2 handling larger passenger volumes on trunk routes, the other fleet—comprising the King Air 360, SkyCouriers, and Grand Caravan EXs—will provide "hub-and-spoke" efficiency, allowing the airline to deploy the right aircraft for specific passenger loads and landing strip requirements.

Industry Implications

The investment signifies more than just an increase in flight frequency; it represents a commitment to modern aviation standards. For international travelers, the King Air 360 offers a level of safety and reliability consistent with global business aviation expectations.

For Textron Aviation, the manufacturer, the deal validates the King Air 360’s regional viability. As growth in the Asia-Pacific region continues to outpace other regions of the global aviation market, the success of platforms like the King Air 360 in emerging economies such as Mongolia serves as a bellwether for demand for medium-sized, efficient turboprop solutions.

AIR Marshall Islands Takes Delivery of First Cessna SkyCourier

The regional aviation landscape in the Pacific has taken a significant step forward with the arrival of the first Cessna SkyCourier in the Republic of the Marshall Islands. The twin-engine turboprop, delivered to the government-owned AIR Marshall Islands Inc. (AMI), signals a modernization effort aimed at bridging the logistical divide between the nation’s widely dispersed atolls.

This delivery is not merely an addition to a fleet but a strategic move to optimize the transport of both people and essential supplies across an archipelago where air travel is a lifeline rather than a luxury.

A New Chapter for Inter-Island Connectivity

The Republic of the Marshall Islands, a sprawling nation composed of thousands of islands and islets, faces unique geographical challenges. Maintaining commerce, tourism, and access to healthcare across these remote stretches requires an aviation platform that is as rugged as it is flexible.

AMI’s new Cessna SkyCourier, a 19-passenger variant, arrives equipped with a specialized passenger-to-freighter conversion kit. This functionality allows the airline to pivot from a full-passenger configuration during peak travel times to a cargo-heavy setup, streamlining the transit of mail, food, medical supplies, and other critical freight.

“The delivery of our Cessna SkyCourier represents a significant milestone for AIR Marshall Islands and its mission to provide dependable air transportation across the Republic of the Marshall Islands,” said Capt. Albon Jelke, general manager and CEO of AMI. “The SkyCourier’s high payload capability and versatile design will allow AMI to transport both passengers and cargo more efficiently, including essential goods such as food, medical supplies, and other critical freight.”

With a second SkyCourier scheduled for delivery later this year, AMI is positioning itself to expand its reach and increase service frequency to the nation’s outer islands, where ground infrastructure can be limited and reliable air access is vital.

The SkyCourier Advantage

The Cessna SkyCourier, a product of Textron Aviation, was designed with operational efficiency at its core. For an operator like AMI, which must handle a wide variety of mission profiles daily, the aircraft’s design philosophy offers a distinct advantage.

“Built with customer needs and operational efficiency at the forefront, the Cessna SkyCourier provides a dependable platform to support consistent, day-to-day operations,” said Juan Escalante, vice president of SkyCourier Sales. “The aircraft was designed for operators like AIR Marshall Islands who require adaptability and unparalleled performance across a wide variety of missions.”

The technical specifications of the SkyCourier reflect its intended use in challenging environments. Powered by two wing-mounted Pratt & Whitney Canada PT6A-65SC turboprop engines, the aircraft is paired with McCauley Propeller C779—a heavy-duty, 110-inch aluminum four-blade propeller system. This setup is specifically engineered for high-performance operations, allowing the aircraft to maintain stability and power while hauling heavy loads, a requirement for island-hopping missions where runway length and payload capacity are critical constraints.

Furthermore, the aircraft features single-point pressure refueling, a feature designed to minimize time spent on the tarmac. For an airline operating multiple stops in a single day, this capability enables faster turnarounds, directly translating into higher fleet utilization and more consistent service for the local population.

The SkyCourier is built to handle the rigors of frequent, short-haul flight cycles. Some of its key technical capabilities include:

• Avionics: The flight deck is equipped with the Garmin G1000 NXi, providing crews with modern situational awareness and navigation tools.
• Performance: The aircraft boasts a maximum cruise speed of over 200 knots true airspeed and a maximum range exceeding 900 nautical miles, allowing it to efficiently cover the distance between the Marshall Islands’ key hubs.
• Payload and Loading: In its freighter configuration, the aircraft can carry up to 6,000 pounds of payload and is sized to accommodate three LD3 shipping containers. The design includes a large side door specifically configured for cargo loading, which can be easily adapted for passenger boarding, further emphasizing its “convertible” nature.

Peruvian Air Force Acquires Fifth C-27J Spartan Transport Plane

The Peruvian Air Force (FAP) has officially placed an order for an additional C-27J Spartan multirole tactical airlifter, reinforcing the nation’s commitment to bolstering its aerial logistics and emergency response capabilities. This acquisition, which brings Peru’s total fleet size to five aircraft, marks a significant milestone not only for the FAP’s air mobility enhancement program but for the manufacturer, Leonardo, as it celebrates a historic production achievement.

The newly ordered aircraft, scheduled for delivery to the FAP’s Grupo 8 in 2027, will be the first in the Peruvian inventory to feature the "Next Generation" configuration of the C-27J. This advanced system includes sophisticated avionics and aerodynamic upgrades designed to enhance mission efficiency and operational performance, allowing the platform to navigate the country’s notoriously complex geography and high-altitude Andean terrain with even greater reliability.

A Global Milestone in Tactical Airlift

The order from Peru marks a landmark for the Spartan program, bringing the global procurement total to 100 aircraft. Currently, the C-27J is operated by 21 different entities across 18 countries, cementing its status as a workhorse in the international tactical transport market. With a combined global fleet that has now logged over 295,000 flight hours, the Spartan's endurance and versatility have been validated in some of the world’s most demanding environments.

For the Peruvian Air Force, fleet expansion is a strategic necessity. Peru’s topography, characterized by the towering Andes, the dense Amazon basin, and a long Pacific coastline, presents unique challenges for ground transport. The C-27J has proven to be the primary solution for bridging these geographical divides, providing the FAP with a reliable means of reaching remote, underserved communities that are often inaccessible by road.

A Proven Track Record in Peru

Since the FAP began operating the C-27J in 2015, the aircraft has been integrated into the core of the nation's air mobility framework. Data analyzed as of early 2026 underscores the profound impact these aircraft have had on domestic logistics and humanitarian aid. The fleet has accumulated nearly 16,000 flight hours, performing a wide range of duties from standard logistical transport to high-stakes emergency intervention.

The operational statistics are telling: the fleet has conducted nearly 600 medical evacuation (MEDEVAC) missions, serving as a critical lifeline for citizens in rural regions who require urgent access to urban hospitals. Beyond healthcare, the aircraft have successfully transported nearly 240,000 passengers and 9,000 tons of essential cargo. These figures illustrate a shift in how the FAP utilizes tactical airpower, prioritizing the aircraft as a tool for national development and social welfare as much as for military preparedness.

Crisis and Disaster Relief

The strategic value of the C-27J lies in its inherent adaptability. The aircraft is designed for rapid reconfiguration, allowing it to transition seamlessly between diverse mission sets, including airdrops, disaster relief, and specialized firefighting operations.

Peru has frequently relied on its Spartan fleet to provide rapid response following natural disasters. When earthquakes disrupt infrastructure, floods isolate towns, or wildfires threaten ecological and residential areas, the C-27J’s ability to operate out of "unprepared" or short runways is vital. The aircraft has become an indispensable asset during shortages of essential supplies, acting as the primary carrier for food, medicine, and critical equipment sent to affected provinces.

The integration of the "Next Generation" configuration in the newly ordered unit will further enhance these capabilities. The technological upgrades—ranging from improved flight management systems to refined wing efficiency—ensure that the FAP remains at the leading edge of tactical transport capabilities, reducing the operational footprint while increasing the payload capacity and range for future missions.

The expansion of Peru’s fleet sends a signal to the defense and aviation sectors regarding the long-term viability of the C-27J platform. As countries across the globe look to replace aging tactical transport fleets, the success of the Spartan in South America serves as a case study for its effectiveness in developing nations.

By standardizing and expanding its fleet, the FAP is also simplifying its maintenance and training pipelines. With five aircraft operating under the same logistical umbrella, the Air Force can streamline spare-parts inventory and technical support, ensuring higher aircraft availability.