August 2nd, 2010


Mark Dilullo founder/owner of Threshold Aviation Group is now the premier fuel provider at (KAUN) Auburn, Northern California. Auburn is a beautiful town located just 20 miles north east Sacramento in the foothills of the Sierra Nevada Range. If you enjoy beautiful world class golf courses or outdoor recreations, keep reading about this perfect retreat! Auburn’s 35,000 acre Recreational State Park with major recreation uses include trail running, hiking, swimming, boating, fishing, camping, mountain biking, gold panning, equestrian/horseback riding trails, road bicycling, and off-highway motorcycle riding. Whitewater recreation is also very popular on both forks of the American River with Class II, III, and IV. For golfers you will be glad to hear it is amidst the Ridge & Darkhorse Golf Clubs! These two courses are one of the finest golf links of North America. Oaks and pines line the fairways; the undulating greens and the elevation changes, make these 18-hole courses one of the most beautiful golf strips in Northern California. Golfers relish the challenging experience of playing at these courses which are sought after venues in PGA tournaments. There is also a fantastic 9 hole with great reviews called Black Oak Golf Course. We hope you get a chance to enjoy the Auburn area and we look forward to hearing from you…

Fuel Services> Threshold Tech., Inc 530-823-0744p

July 28th, 2010


Theshold Aviation Group is proud to announce its delivery of a G 550 under part 91. See why serious aviation advocates are choosing Threshold to manage their aircraft.
Contact: Mark Dilullo
July 26th, 2010


Threshold Aviation Group has expanded its fleet acquiring 2 beautiful Gulfstream IV’s for part 91 management and charter on part 135.
December 22nd, 2009

ThresholdTechnologies Second Annual Feed the Needy Christmas Dinner

Threshold Technologies, is hosting its Second Annual Feed-The-Needy Christmas Dinner in its Chino Airport Hangar on December 24th. This event is focused on providing a hot meal with Christmas Cheer and entertainment to any family in need. Santa will make an appearance to ensure that the children receive toys and Raguzzi the Magician will again provide entertainment.

“We understand that there are a great number of families that are in need of kindness and nourishment this Holiday Season” said Mark DiLullo, Chief Executive Officer for Threshold Technologies. Mr. and Mrs. DiLullo and the Threshold staff have solicited and received assistance and support from numerous community businesses and individuals who have contributed food, soft drinks, desserts, entertainment as well as children’s gifts, making the Annual Dinner a community undertaking.

Among the many participants volunteering money, materials and time are; Cerenza Foods, Red Hill BBQ, The Taco Man, Bob’s Big Boy, Chick Fil-A, Lizzy’s Party Supplies, BRS Limo and Transport, Fullmer Construction, New York Pizza, Mark Christopher Chevrolet, Don Baker, Raguzzi the Magician, DJ-Mark Goldstein, Sandy Koch, Chino Police Department, Chino Hills Fire Department, Clearview Church and many others who provide their assistance anonymously.Threshold Technologies is a full service provider of aviation services. The Company manages, maintains and operates thirty jet aircraft from their Chino Airport facilities which encompasses over 125,000 square feet. The Company operates an Executive Terminal, Jet Charters, Fuel Sales and Maintenance Services for most aircraft. Besides Threshold’s philanthropic efforts in the community, the Company benefits San Bernardino County through its employment of 60 local families with well paying jobs and generous benefits. Threshold’s efforts to expand in the future will add additional employment opportunities for local residents. Threshold’s commitment to developing the Chino Airport and the County of San Bernardino is unwavering. Additional information is available on the Company’s web site,

May 20th, 2009

Threshold Aviation Group Appointed Clifford Development Service Center For Citation II Re-engining Program

Chino, California (KCNO) – Threshold Aviation Group announced today that it has been appointed as a Clifford Development service center for the Cessna Citation II engine conversion program. Clifford Development is currently completing a Supplemental Type Certificate (STC) to re-engine Cessna Citation II (CE-550) aircraft with 3,000 lb. thrust Williams International FJ44-3 engines including integration of the FADEC (Full Authority Digital Control) system.

Threshold’s Service Center will provide complete sales, installation and service support for Citation II owners who purchase the Clifford engine package. Threshold will receive technical support and complete installation kits from Clifford Development including engines, engine mounts, nacelles, all service documentation and pilot operating handbook document for the modified airplanes. Installation time for new engines is estimated at approximately six weeks. Threshold will also offer Citation II owners the concurrent installation of upgraded glass cockpits, interiors and aircraft paint. Combined with Threshold’s full service maintenance and inspection program, Citation II owners’ finished project will be a modern, fuel efficient aircraft with a “like new appearance.”

“We are very pleased to announce the appointment of Threshold Aviation Group as a service center,” said Jim Clifford, chief executive officer of Clifford Development. He added, “From the start, we set very specific criteria for our service centers. Threshold Aviation Group exemplifies the key attributes of high technical standards and impeccable customer service.”

“We are very excited about joining with Clifford Development on this project.” Said Mark DiLullo, Chief Executive Officer of Threshold Aviation Group. He continued, “Threshold has nearly two decades of experience with Citation aircraft. This expertise combined with our full service maintenance, inspection capabilities and completions packages will give Citation II owners a fully updated modern aircraft with extended range and significantly better fuel economy and performance.”

Based on performance computations completed using the NASA-developed General Aviation Synthesis Program (GASP), Clifford expects the re-engined CE-550 will have significant performance improvements including a 21 percent long range cruise speed increase, a 29 percent range increase, a 34 percent improvement in single engine climb rate and a 20 percent improvement in fuel efficiency. The FADEC integration allows for a decreased takeoff field length.

The STC engineering effort is nearing completion. Williams FJ44-3 engines have been installed and run on a certification airplane. First flight of the Cessna Citation II with Williams FJ44-3 engines is anticipated in July 2007. Immediately after local flight evaluations, the certification airplane will move to Mojave Airport to begin 250 hours of test flights to verify performance and to meet the FAA requirements. Issuance of the Supplemental Type Certificate is slated for fourth quarter 2007.

The Citation II engine conversion is priced at $2,150,000 for 2008 installations. This price includes engine mount kits, nacelles, engines, engine instrumentation, installation labor and training. The price includes a credit for the original engines.

About Clifford Development – Clifford Development was formed to rapidly develop STC’s for the installation of new engine technologies on the existing fleet of high value corporate jets. The company will fund major re-engining certification programs to enhance the safety, value and performance of corporate jets. The company will focus individual teams of highly experienced aerospace engineers on certification programs using the best available project management technology and certification processes. Detailed performance data on the re-engined Citation II are available at More information about the Williams International FJ44-3 and Williams’ world-class product support is available at:

About Threshold Aviation Group – Threshold Aviation Group is a full service aviation company based in Chino, CA. Founded in 1990 by Mark and Lisa DiLullo, the company operates from a 136,000 square foot modern hanger complex on the Chino Airport (KCNO) in Southern California. Threshold provides maintenance and management services to a wide variety of operators in the private and corporate business jet community, including an in-house fleet of 30 Business Aircraft consisting of a Boeing B-727, Gulfstream II’s, III’s and IV’s, Falcon 10s and 20s, Hawker 400s, 700s and 800s as well as Citation I’s and II’s. Threshold’s Part 145 Repair Station provides maintenance services on most Business Jets, including 72 Month Inspections on Gulfstream Aircraft. Threshold employs more than 40 full-time maintenance personnel operating in two shifts and has the capacity and capability to fulfill the most demanding maintenance requirements. Threshold also offers complete Interior Design and Completion services as we ll as avionics upgrades and aircraft painting services.

Threshold Air Charter, a subsidiary company of Threshold Aviation Group, currently operates aircraft charter services for both domestic and international travel. Threshold’s growing charter fleet currently consists of five aircraft including: two Gulfstream, two Citation II and a Falcon-10.

Most recently Threshold opened a brand new, full service FBO at Chino Airport. Threshold’s FBO was designed to give corporate aviation clients a viable alternative to Southern California’s congested airports, which are literally minutes away. Visit Threshold Aviation Group on the Web at:

April 19th, 2009

Threshold Aviation News Feed

Welcome to Threshold Aviation Group! We are a full service aviation company with a 20 year history of providing quality services to our distinguished clients. Our proven track record of safety, excellent service, and guidance to the aviation community has led us to be the largest maintenance and management facility in southern California with over 150,000 square feet of hangar and executive office space. We are an institutional level service provider that exceeds expectations of on time, on specification, and on bud-jet solutions.

Threshold Aviation Group provides services to aircraft manufacturers, lenders, governments, fractional operators, insurance companies, airlines, jet charter companies, and select individuals through out the world. Our services encompass private jet charter, aircraft maintenance, inspections and midlife overhaul, AOG services, business jet completions, modifications, avionics, FBO services, acquisitions and operational management.

Threshold buys, sells, and manages Business Aircraft from Citations to Boeings. Our managed fleet of aircraft includes Gulfstreams, Falcons, Challengers, Hawkers, Lear Jets, Citations, and 727-VIP aircraft. We are consultants to all of your aviation needs. Call us today and see why Threshold Aviation Group is the premier service provider for all your aviation needs.

Threshold Aviation Group is conveniently located at Chino (KCNO) Airport in Southern California just outside Orange County and Los Angeles County. Threshold has close proximity to Santa Ana, Ontario, Long Beach, Carlsbad, Van Nuys, and Burbank airports.