Learjet 45 parts: what is for sale, what fails, which ADs apply
429 Learjet 45 aircraft are on the U.S. registry across 1 variant. This page gathers what the record holds for the type: parts listed here with condition and trace, the airworthiness directives that name it, the parts operators report most in FAA service difficulty reports, and who can repair its components. Every part number links to its own page. Data, not advice.
0
parts listed here
0
sellers
7
airworthiness directives
90
service reports, 5 yr
429
U.S. aircraft
320
registrants
For sale here, tagged to the Learjet 45
No listing is tagged to this aircraft today. Search any part number for who has it, or send a request from the part page; sellers who carry the families are told within the hour.
Sellers: parts you list with an aircraft type appear here automatically. Listing is free, no commission.
Parts operators report most on the Learjet 45
From 90 FAA service difficulty reports filed in the last five years. A count is how often a part was reported, not a judgment of the part; high-count items are the ones a shop should have on the shelf.
| Part | Most-reported part number | Reports |
|---|---|---|
| Windshield | 6656100000010 | 15 |
| Warning Message | not stated | 5 |
| Switch | 444EN2R | 3 |
| Engine | not stated | 3 |
| Fire Loop | 27705215 | 3 |
| Tire | 226K084 | 3 |
| Trim System | not stated | 3 |
| Landing Gear | 4532201000V12005 | 2 |
| Fms | 101741001 | 2 |
| Actuator | 6627401000009 | 2 |
| Fire Warning | not stated | 2 |
| Attach Bolt | 4527401706003 | 2 |
| Battery | RG443 | 2 |
| Control Box | 6627401000003 | 2 |
| Cabin Pressure | not stated | 2 |
| Hydraulic System | not stated | 1 |
| Indicator | 501164802 | 1 |
| Isolation Valve | LJ78352005 | 1 |
| Latch | DS2607 | 1 |
| Muffler | 12945096001 | 1 |
Airworthiness directives naming the Learjet 45
3 final, 4 proposed. Each AD page lists the part numbers it names and who sells them.
- 2023-01-05 · Learjet, Inc., Airplanes · Feb 2, 2023
- 2022-24419 proposed · Learjet, Inc., Airplanes · Nov 10, 2022
- 2022-16680 proposed · Learjet, Inc., Airplanes · Aug 11, 2022
- 2021-23-08 · Learjet Inc. Airplanes · Dec 6, 2021
- 2021-23-11 · Learjet Inc. Airplanes · Dec 6, 2021
- 2021-17044 proposed · Learjet Inc. Airplanes · Aug 13, 2021
- 2021-15953 proposed · Learjet Inc. · Jul 28, 2021
The fleet
429 aircraft, 320 registrants.
- 45 Learjet Inc · 429
Largest fleets: TX 55, UT 37, DE 37, OK 36, FL 27, OH 23.
Repair and requests
No repair station here names this type yet. Search repair capabilities by part number.
Need a part? Open its page and send a request; no account.
Questions
- What Learjet 45 parts are for sale on PartsAndPlanes?
- No listing is tagged to the Learjet 45 today; a request from this page reaches sellers who carry its families, and the part pages show who has each number.
- Which airworthiness directives apply to the Learjet 45?
- 7 FAA airworthiness directives on our record name the Learjet 45, 3 of them final; each links to the AD page with the part numbers it names.
- What parts fail most often on the Learjet 45?
- Operators filed 90 service difficulty reports on the Learjet 45 in five years; the parts reported most were Windshield (6656100000010), Warning Message, Switch (444EN2R), Engine. Counts are the FAA's; they describe reporting, not reliability.
- How many Learjet 45 aircraft are registered in the U.S.?
- 429 aircraft across 1 model variants, held by 320 registrants; the largest fleets are in TX, UT, DE.
Registry and reports as of 2026-09-28. See also condition codes and NSN lookup.