Learjet 23 — Primary-Source Technical Documentation Archive
The Learjet 23 was the aircraft that launched an industry. First flown in 1963 and certified under FAA TCDS No. A5CE, it established the template for the high-performance business jet — a design directly inspired by the Swiss FFA P-16 strike-fighter prototype and universally known as the "Pocket Rocket" for its aggressive acceleration and razor-sharp handling. This collection brings together the core primary-source technical documents covering the airframe, powerplant, structure, and support logistics of the Learjet 23 series.
What's Included — Document Manifest
1. Learjet 23 Service Manual (SM-93)
Published: May 28, 1976 · Last revision: Rev #27, April 29, 2005
The definitive factory maintenance reference for the Learjet 23 airframe. Covers systems, rigging, servicing procedures, and operational limits including control surface travel (flaps to 40°, speed brakes to 40°), bleed-air ECS/pressurization, and CJ610 engine integration.
2. Learjet 23 Series Illustrated Parts Catalog (IPB-93)
Published: February 25, 2000 · Supersedes edition of June 1, 1992
Full illustrated breakdown of all airframe assemblies, sub-assemblies, and line-replaceable units. Essential reference for parts identification, sourcing, and restoration work on surviving Learjet 23 airframes.
3. Learjet 20/30 Series Structural Repair Manual (SRM-4)
Published: May 15, 1992 · Revised: July 10, 1998 (Rev No. 4)
Covers structural repair data, allowable damage limits, and repair procedures for the Learjet 20 and 30 series family — the direct structural lineage of the Learjet 23. Addresses primary spar caps, wing attachments, and flap actuator zones subject to FAA AD recurring inspection requirements (e.g. AD 2005-16-09).
4. Bombardier Aerospace — Learjet Spare Parts Price Catalog
Published: April 2004 · Covers Learjet Models 23, 24, 25, 28, 31, 35, 36, 40, 45, 55 & 60
Bombardier Customer Support official spare parts pricing reference. Invaluable for restoration budgeting, parts valuation research, and historical cost documentation across the full Learjet family.
5. Learjet 23 Service Bulletins, Service News Letters, ADs & Supplemental Documents (23_Sb_Sl_ADs)
3,107 pages · 164 MB
A comprehensive compilation covering: Service Bulletins (SB), Service News Letters, Special Spares Kits, Airplane Modification Kits, Airplane Accessory Kits, Field Change Notices, Service Information Letters, Advisory Bulletins/Wires, and Airworthiness Directives (ADs). This is the complete engineering bulletin and regulatory compliance record for the Learjet 23.
Aircraft Technical Profile
Aerodynamics & Airframe
Low-slung straight wing optimized for high Mach cruise, with fixed wingtip fuel tanks acting as endplates to reduce induced drag. Distinctive T-tail configuration keeps the horizontal stabilizer clear of wing wake and jet exhaust. Mechanically linked manual flight controls (ailerons, elevators, rudder) with electrically actuated trim surfaces.
Powerplant
Twin General Electric CJ610-1 / CJ610-4 rear-fuselage-mounted turbojets · 2,850 lbf (12.71 kN) per engine · 5,700 lbf combined. Engine compressor bleed air supplies airframe anti-ice, ECS, and cabin pressurization.
Performance Data
| Parameter | Value |
|---|---|
| Maximum Takeoff Weight (MTOW) | 12,500 lbs |
| Maximum Landing Weight (MLW) | 11,880 lbs |
| Empty Weight | 6,150 lbs |
| Maximum Cruise Speed | 488 knots (561 mph) |
| Normal Service Ceiling | 45,000 ft |
| Maximum Ferry Range | 1,591 nautical miles |
| Rate of Climb | 6,900 ft/min |
Regulatory & Certification Notes
Certified under FAA TCDS No. A5CE. Later derivatives (Learjet 24 onward) migrated to TCDS A10CE. Critical ADs including AD 2005-16-09 mandate recurring structural inspections on wing attachments, flap actuators, and primary spar caps. STCs authorize integration of Digital Air Data Display Units and HIRF shielding on surviving airframes.
This is an archival, static-copy edition fixed at its original publication date. Intended for historical reference, flight simulation, museum restoration, and educational use only. Not approved for active airworthiness maintenance under FAA 14 CFR § 43.13, EASA Part-M, or equivalent international regulations. Operators of active aircraft must use current, revision-controlled publications from the Type Certificate holder or an authorized distributor.
⚠️ Regulatory Notice: Under FAA 14 CFR § 43.13 and EASA Part-M, any mechanic performing maintenance on an active aircraft must use current, manufacturer-approved revision-controlled data. This archival document does not satisfy that requirement.
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