LEARJET 40 Model Guide
LEARJET 40 · Model Guide
Overview
The LEARJET 40 is a twin-engine business jet. The source documents contain no specifications, performance or weight data for it. This guide therefore covers ownership checks only: the scheduled inspection intervals, and a December 2023 engine-trend report on one example, N40XR.
- Scheduled inspections fall at 12, 24, 48 and 96 months. The 96-month structural inspection takes 4+ weeks of downtime.
- The 48-month event often turns up significant findings, so budget for corrective work.
- Ask for engine trend reports. N40XR's trends were assessed as normal in December 2023 despite CAS and N1 faults.
- No specs, performance or weights were in the sources. Get them from the flight manual.
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Reference only, not for flight. Use the current approved manual for your aircraft. See terms, section 5.
Document
Source
Copy found at sprinkle.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type ·
- Model Guide
- Year ·
- 2026
- File size ·
- 46 KB
- Copy found at ·
- sprinkle.com
How long are major inspections on a LEARJET 40?
For the LEARJET 40, the inspection guide lists typical downtime of 3–5 days at 12 months, 7–10 days at 24 months, 2–3 weeks at 48 months and 4+ weeks for the 96-month structural inspection.
What should I review for LEARJET 40 engines?
For a LEARJET 40, ask for engine trend reports and fault download history. The N40XR report shows trends can read normal while N1 monopole and wiring faults are logged, so review both.
What is the LEARJET 40 Model Guide?
The LEARJET 40 Model Guide is a model guide for the LEARJET 40, dated 2026.
What year was the LEARJET 40 Model Guide published?
The LEARJET 40 Model Guide — the LEARJET 40 model guide on file — is dated 2026.
Most owners only have the POH. Here's the essential set for the LEARJET 40.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins on file
- Type Certificate (TCDS)
More LEARJET 40manuals & documents
In this document
Inspection schedule
12-month: 3–5 days, visual and system checks, logbook review. 24-month: 7–10 days, adds fire detection, oxygen and pitot-static checks. 48-month: 2–3 weeks, extensive system evaluations. 96-month structural: 4+ weeks, with corrosion evaluation, NDT, landing gear and pressurization checks. The guide covers Learjet 40/45/70/75. Hourly and cycle checks vary by model.
Engine trend example: N40XR
The report on N40XR (Learjet 40-L40.2028) was created 18/12/2023. Both engines (116602, 116603) were assessed Normal on takeoff and cruise trends. On 9 December 2023 engine 116602 logged an N1 monopole circuit open fault. Maintenance was to investigate or replace the monopole. Engine 116603 logged an N1 cross-engine wiring fault.
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Safety notes
- Check SB/AD applicability and compliance in the logbooks. The 12-month inspection includes an SB/AD applicability check.
- Do not buy on trend status alone. N40XR showed N1 signal and monopole faults on engine 116602 while its trends read normal.
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Full document text
LEARJET 40 Model Guide The LEARJET 40 is a twin-engine business jet. The source documents contain no specifications, performance or weight data for it. This guide therefore covers ownership checks only: the scheduled inspection intervals, and a December 2023 engine-trend report on one example, N40XR. • Scheduled inspections fall at 12, 24, 48 and 96 months. The 96-month structural inspection takes 4+ weeks of downtime. • The 48-month event often turns up significant findings, so budget for corrective work. • Ask for engine trend reports. N40XR's trends were assessed as normal in December 2023 despite CAS and N1 faults. • No specs, performance or weights were in the sources. Get them from the flight manual. Inspection schedule 12-month: 3–5 days, visual and system checks, logbook review. 24-month: 7–10 days, adds fire detection, oxygen and pitot-static checks. 48-month: 2–3 weeks, extensive system evaluations. 96-month structural: 4+ weeks, with corrosion evaluation, NDT, landing gear and pressurization checks. The guide covers Learjet 40/45/70/75. Hourly and cycle checks vary by model. Engine trend example: N40XR The report on N40XR (Learjet 40-L40.2028) was created 18/12/2023. Both engines (116602, 116603) were assessed Normal on takeoff and cruise trends. On 9 December 2023 engine 116602 logged an N1 monopole circuit open fault. Maintenance was to investigate or replace the monopole. Engine 116603 logged an N1 cross-engine wiring fault. Safety notes: • Check SB/AD applicability and compliance in the logbooks. The 12-month inspection includes an SB/AD applicability check. • Do not buy on trend status alone. N40XR showed N1 signal and monopole faults on engine 116602 while its trends read normal.