Raisbeck’s Learjet 35 ZR Completes Phase II FAA Certification Flight Tests | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Most Recent Daily Episodes

Episode Date

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday Airborne-Thursday

Airborne-Friday

Airborne On YouTube

Airborne-Unlimited-07.14.25

Airborne-NextGen-07.15.25

AirborneUnlimited-07.16.25

Airborne-FlightTraining-07.17.25

AirborneUnlimited-07.11.25

Fri, Jan 16, 2004

Raisbeck’s Learjet 35 ZR Completes Phase II FAA Certification Flight Tests

Raisbeck Engineering has completed the aerodynamic flight tests required under FAA TIA (Type Inspection Authorization), necessary to achieve it’s upcoming ZR Technology STC. RVSM qualification testing was also completed.

The FAA flight tests were conducted during the last Quarter of 2003 and completed December 4th. The flights were conducted on S/N 35-634, the same Learjet 35 which was flown over 300 hours in development flight-testing, to define the various elements of the ZR Technology package. The airplane was configured with ZR production and pre-production assemblies to define the aerodynamic configuration necessary for FAA Certification testing.

The test aircraft has been returned to baseline configuration pending completion of the first production ZR Technology kit, scheduled for installation in late spring. Final FAA Phase III Certification flying will follow immediately, including high altitude buffet boundary definition, wing anti-ice certification, etc.

First production deliveries are scheduled by next summer.

The development and FAA certification flight testing was orchestrated by Raisbeck Engineering’s Aerodynamist Nate Lachendro, who was on board for the majority of the development and certification flight testing.

Lachendro was joined by veteran Raisbeck Chief Test Pilot Pete Reynolds and the Raisbeck flight test crew in flights involving hundreds of hours of drag points and thousands of stalls.

In acclaiming both the low-speed and high-speed characteristics of the ZR package, Lachendro commented; “We wanted to come up with a system that would be the final word in increased performance for the Learjet 35/36 family”.

"We believe we are there, with an honest 10% reduction in high cruise speed drag. Other allied ZR Technology benefits include reductions in climb-time, better long-range cruise, reduced takeoff speeds and required runway, and block fuel consumption. Initial cruise altitudes, and range are also better”.

FMI: www.Raisbeck.com

Advertisement

More News

ANN's Daily Aero-Term (07.15.25): Charted Visual Flight Procedure Approach

Charted Visual Flight Procedure Approach An approach conducted while operating on an instrument flight rules (IFR) flight plan which authorizes the pilot of an aircraft to proceed >[...]

Aero-News: Quote of the Day (07.15.25)

“When l became the Secretary of Defense, I committed to rebuild our military to match threats to capabilities. Drones are the biggest battlefield innovation in a generation, >[...]

ANN's Daily Aero-Linx (07.15.25)

Aero Linx: Stearman Restorers Association Welcome to the Stearman Restorers Association. The Stearman Restorers Association is an independent “Not for Profit” 501C-3 Co>[...]

NTSB Final Report: Kjelsrud Gary Kitfox

Airplane Exhibited A Partial Loss Of Engine Power When It Was About Halfway Down The Runway Analysis: The pilot of the experimental amateur-built airplane was departing from his pr>[...]

NTSB Prelim: Cessna A150L

The Flight Path Was Consistent With Low-Altitude Maneuvering On June 18, 2025, about 0922 mountain standard time, a Cessna A150L airplane, N6436F, was substantially damaged when it>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2025 Web Development & Design by Pauli Systems, LC