Parts Report: Which Parts Were Hardest to Find in February 2026?

Bottlenecks in North America and across the globe inform which parts can be hardest to find in the aftermarket.

In reports from Locatory.com, data shows that these bottlenecks are largely driven by:

• MRO network constraints
• Fleet mix
• Utilization intensity

Experts from Locatory.com note, “Hardest-to-find parts, particularly for standard hardware and fleet-specific engine components, consistently cluster around short-haul regional aircraft (Embraer E-Jets, B737NG/MAX) and legacy narrowbodies (CFM56 fleets), indicating the need for inventory planning and marketplace prioritization.”

Hardest-to-find parts globally and in North America for February 2026

Reports from Locatory.com show the following as the parts that were hardest to find in February 2026:

What were the hardest-to-find engine components in February 2026?

According to Locatory.com’s reports, “Engine-related LRUs and control modules remain the primary high-value constraint category.” The reports point to Embraer E-Jets both for global data and North American searches, which show shortages in parts like:

• 4505003M – FADEC
• 4505008F – Fuel Module Assembly
• 4505113B – Engine Control Harness Assembly
• 4505789E – Auxiliary Power Unit (APU)
• 4506256B – Air Intake Housing

The report states, “Their repeated appearance globally and in North America reflects sustained short-haul cycle exposure and limited repair/overhaul capacity for E-Jet engine systems.”

What were the hardest-to-find electrical and power components in February 2026?

Electrical and power components also had the same hardest-to-find products both globally and in North America.

Locatory.com explains, “These parts support high-cycle aircraft such as 737NG fleets and regional jets, where repeated start-stop operations accelerate wear on power and control systems.”

These include:

• 756722B – Solenoid Valve Assembly (ERJ 175)
• 761574B – Integrated Drive Generator (B737NG, CFM56-7B)
• 191-09758-401 – Module Assembly

What were the hardest-to-find avionics and sensors in February 2026?

Avionics and sensor-related components also had the same shares of search data globally and in North America, largely due to maintenance cycle timing and replacement intervals.

Recurring constrained components include:

• H321BHM1 – Indicator, Standby Horizon (Airbus A320 Family / Airbus Helicopters)
• AC-130 – Air Speed Indicator (Boeing 757)
• 491B1213032-019 – Cable Assembly

What were the hardest-to-find standard hardware components in February 2026?

Standard hardware shows bottlenecks in both the global and North American markets, driven by short-haul rotations that put pressure on MROs.

Standard hardware components that were hardest to find in February 2026 include:

• AN3C-20A / AN4CH14A – Hex Head Airframe Bolts
• NAS1351C3-24 / NAS1351C4-24 / NAS1351C4-28 – Socket Head Cap Screws
• NAS6704D34 – Close Tolerance Tension Bolt
• MS17985C620 – T-Handle Ball Lock Pin
• MS24665-24 / MS24665-132 – Cotter Pins
• BACP18BC02A06P – Boeing Standard Cotter Pin
• MS20995C20 – Lockwire

Locatory.com’s February report states, “The data shows that standard aerospace hardware is currently the most exposed part of the aftermarket supply chain.”

This showcases the need for:

• Smart inventory planning
• Broader supplier networks
• Closer management of lead times