The Learjet 35 is one of the most iconic light business jets ever built. Introduced in the 1970s by Gates Learjet, it became renowned for its speed, efficiency, and range—so much so that it found widespread use in both civilian and military operations. Its sleek design, swept wings, and twin rear-mounted engines became synonymous with the Learjet brand and executive jet travel.

✈️ Overview:

• Role: Light business jet / military utility jet
• Manufacturer: Gates Learjet (later Bombardier)
• First flight: August 22, 1973
• Introduced: 1974
• Production ended: 1994
• Total built: ~738
• Military designation: C-21A (U.S. Air Force)

🛠️ Key Specs (Learjet 35A – most popular variant):

• Engines: 2 × Garrett TFE731-2-2B turbofans
• Max cruise speed: ~451 knots (519 mph / 835 km/h)
• Range: ~2,056 nautical miles (3,807 km)
• Service ceiling: 45,000 ft (13,716 m)
• Takeoff distance: ~4,300 ft (1,311 m)
• Landing distance: ~2,700 ft (823 m)
• Crew: 2 (pilot and co-pilot)
• Passengers: Typically 6–8
• Cabin dimensions: Length: 12.9 ft (3.9 m) Width: 4.9 ft (1.5 m) Height: 4.3 ft (1.3 m)
  • Length: 12.9 ft (3.9 m)
  • Width: 4.9 ft (1.5 m)
  • Height: 4.3 ft (1.3 m)

🔍 Design Highlights:

• Sleek, swept-wing design based on the earlier Learjet 25
• Powered by TFE731 turbofans—a major upgrade over previous turbojet engines
• Features a pressurized cabin, small lavatory, and comfortable executive-style seating
• External baggage compartment (better than the Learjet 36)
• Designed for fast climbs and high cruising altitudes

✨ Variant: Learjet 35A

• Introduced in 1976 with: Increased fuel capacity Longer range (~2,056 nmi vs ~1,940 nmi for the original 35) Improved avionics and systems
  • Increased fuel capacity
  • Longer range (~2,056 nmi vs ~1,940 nmi for the original 35)
  • Improved avionics and systems
• Became the most produced and popular version of the Lear 35 series

✅ Strengths:

• Exceptional speed and range for a light jet
• Efficient and reliable TFE731 engines
• High-altitude cruising (less turbulence, better efficiency)
• Popular for medevac, VIP transport, and surveillance missions
• Proven durability—many still flying today

❌ Weaknesses:

• Tight cabin—no stand-up room
• Older designs lack modern avionics and noise insulation (unless upgraded)
• Lavatory is limited (curtain-enclosed, non-enclosed in some versions)
• Ride can be choppy in turbulence due to light weight and short wingspan

🪖 Military Use:

• U.S. Air Force operates the C-21A, a Learjet 35A variant for: VIP transport Medical evacuation Light cargo and personnel movement
  • VIP transport
  • Medical evacuation
  • Light cargo and personnel movement
• Other countries have used the 35A for training, electronic warfare, and surveillance

🛩️ Fun Fact:

In 1996, pilot Bill Lear Jr. (son of the founder) flew a Learjet 35 around the world in 49 hours and 21 minutes, setting a new world record at the time.

👑 Legacy:

• The Learjet 35/35A remains a legend in business aviation, often called the "muscle car" of the skies for its speed and sleek looks
• Even today, it's used in charter, medevac, and military roles due to its performance, reliability, and operating economy