As peak travel season has begun raising demand for flights and, in turn, aircraft maintenance, aftermarket data showed that engine components were the most highly searched for parts in May 2026.

Data from Locatory.com highlighted the most expansive search history for parts used in platforms powered by CFM56 engines, such as the Airbus A320ceo and Boeing 737NG.

Which parts were most searched in May 2026 globally?

This chart showcases the most highly searched parts across the globe in May 2026: 

Why were engine components the highest drivers of parts searches in May 2026?

With engine components and starter systems making up 54% of global searches for parts and 65% of North American searches, they showed the highest demand for the month.

Much of the demand focused on components for the Boeing 737NG and Airbus A320 family platforms that are powered by CFM56 engines. This included:

• B777 engine-start systems
• Bleed-air regulation
• HPT/HPC rotating hardware
• HMUs
• Seals
• Fuel-system components

Locatory.com reports noted, “North America was more engine-heavy than the global dataset. Searches were concentrated around the same narrowbody engine ecosystem, but with a stronger emphasis on starter reliability, bleed-air control and dispatch-critical engine support parts.”

The reports continued, “May’s demand mix points to shop-visit-critical material rather than routine inventory replenishment, focusing on components tied to deeper maintenance activity.”

“The strong North American skew suggests operators and MROs in the region may be positioning material ahead of summer utilization, engine shop visits and continued reliance on mature 737NG and A320ceo fleets,” said experts from Locatory.com

Specific engine components that people searched for the most were:

• Spool Assy-Booster (PN: 338-001-906-0)
• Airbus A320-family engines
• Hydromechanical Unit (HMU) (PN: 442653)
• High Stage Bleed Valve (PN: 3214446-4) for Boeing 737NG

There was also significant search for rotating and hot-section hardware, such as:

• HPT Disks (PN: 1498M43P06 / 1498M43P07)
• HPT Front Shaft (PN: 2048M21P03)
• HPT Rotor Blade (PN: 2100M96P03)
• HPC Stage 4–9 Spool (PN: 2048M20G03)
• HPC Front Shaft (PN: 1386M56P03)
• HPT Front Rotating Air Seal (PN: 2410M50P02)
• Seal Rotating Air Rear (PN: 2116M25P01)

In terms of starters, there were frequent searches for:

• 3505582-27
• 3505582-65
• 4952164
• 2704442-5
• 3505830-13
• 3505945-12
• 3505945-10
• 3888217-4

What was May 2026 aftermarket search volume like for cabin and safety components?

Experts from Locatory.com explained, “Cabin and safety components represented 14% of global searches and 12% in North America. Unlike April, when North America showed a stronger safety-equipment skew, May’s distribution was more balanced across regions.”

The reports also discussed how this balance could indicate that operators are preparing for summer travel and planning other activities, such as:

• Lease transitions
• Return-to-service activity
• Cabin reliability requirements

Locatory.com reports said, “Airline distress and fleet reshuffling can also increase demand for cabin and safety items as aircraft move between owners, operators or maintenance events.”

Around the globe, the most highly searched for cabin and safety components were:

• Mask Assy Full Face Crew (PN: 174692-N7) for Boeing 737 family
• Slide Assembly (PN: D31516-717) for Airbus A320 family
• Windshield Main L/H (PN: NP139321-13) for Bombardier CRJ series
• FDU Fire Detection Unit (PN: 909012-02-01) for Airbus A320 family
• Oxygen / Nitrogen Generation System Sensor (PN: 3522W000-001) for B757 / B747 / B737
• Evacuation Slide (PN: 5A3307-701) for Boeing 737 fleet
• Transmitter Unit - ELT (PN: 1152682-2) for Boeing fleet

In North America, searches for these components centered around:

• Window - Side Cockpit Window (PN: NP139322-12) for Bombardier CRJ series
• Oxygen Cylinder Assy (PN: 801307-00)
• Plenum (PN: 2202623-2) for B757 / B767

Which parts were most searched in May 2026 in North America?

This chart showcases the most highly searched parts in May 2026, specifically in North America:

How often did people search for electrical and power components in May 2026?

For electrical, APU and hydraulic components, this category made up 12% of searches globally and 8% of searches in North America.

Since these parts are often high-value rotables that have long repair cycles, this category remains significant even at a lower makeup of search data.

Locatory.com reports highlighted reasons why electrical components remain highly searched in the aftermarket, such as:

• High utilization
• Frequent cycles
• Repair shop capacity constraints

According to Locatory.com experts, “It reflects the reliability burden of aircraft that are flying more cycles and remaining in service longer.”

They continued, “In a fuel-sensitive operating environment, reliable APUs, IDGs and hydraulic systems also carry a cost implication: delays, inefficient ground operations and repeated removals become harder to absorb when margins are under pressure.”

Globally, the most highly searched electrical and power components for the month included:

• Hydraulic Pumps (PN: 57186-10 and PN: 3268792-10) for Boeing 737 fleet
• Integrated Drive Generators (IDGs) (PN: 1706903 and PN: 761574B)
• Plug Ignitor APU (PN: 305766-1) for Boeing 757 / 767
• APU (PN: 3800708-1) for Airbus A320 family
• Constant Speed Drive (PN: 735511A) for Boeing 737 fleet

In North America, the highest number of searches in this category were for:

• Pump Motor Package (PN: 57186-10) for B737 / B747
• Electrical Box (PN: D23119751-1) for A320 family
• APU Lube Module Assy (PN: 4131020-3) for B737

How highly searched were airframe and landing gear components in May 2026?

While April showed North America having a stronger concentration of searches for airframe, landing gear and flight control parts, May 2026 showed this category making up only 4% of searches in the region. Globally, these components accounted for 12% of parts searches.

According to Locatory.com reports, “The drop in North American landing and airframe share suggests May’s regional demand shifted away from April’s ERJ-190 landing gear cluster and back toward engine, starter, IDG and pneumatic-system sourcing.”

The reports added, “This may reflect a change in maintenance timing. Airframe and landing demand often appears around scheduled checks, inspections and structural findings.”

“Engine and pneumatic demand is more closely tied to utilization and dispatch reliability. In May, North America appears to have been more focused on operational continuity ahead of peak season than on heavy airframe activity,” noted the reports.

Globally, the most-searched-for airframe and landing gear components included:

• Wheel Assy MLG (PN: 3-1573-1) for DHC8-400
• Servo Controls (PN: 31073-110, PN: 31075-840) for Airbus A320 family
• Guide Assy Aft Cargo Compartment (PN: YG101-04) for A330
• Strap (PN: 1-320-0002)
• Brake Accumulator (PN: 088256-04644)

In North America, the most notable searches centered around the Thrust Reverser Cowl Opening Actuator (PN: 1FA14012-8) for B737.

How frequently were avionics and sensor components searched for in May 2026?

Avionics, sensors and communication components made up 6% of global searches and 10% of North American searches in May 2026.

Experts at Locatory.com shared, “Avionics and sensor demand can become disruptive because troubleshooting is time-sensitive and replacement options are limited by software, configuration, certification and traceability.”

The most highly searched avionics, sensors and communications equipment across the globe for May 2026 were:

• Air Data Inertial Reference Unit (ADIRU) (PN: HG2030BE04) for Airbus A320 and widebody fleets
• Total Air Temperature / TAT Sensor (PN: 102LA2AG) for B757 / B747 / B767
• Transmitter Unit - ELT (PN: 1152682-2) for Boeing fleet

In North America, more highly searched parts in this category included:

• TCAS Vertical Speed Indicator Assy (PN: 457400LA1901)
• VHF Communication Transceiver (PN: 064-50000-2000)
• Ram Air Sensor (PN: 1150002-1) for B737