Practical market insight for APU decisions

Minipacks Matter!

If you’ve gone to the market for an APU before you’ll certainly be familiar with being sent a link of records for the current and historical data surrounding the APU. So, what are these records and how important are they?

schedule 5 min read • 17th April 2026

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GTCP85: A Classic Workhorse

For SpoolUp CEO and founder Myles Thomas, the GTCP85-series isn’t just another APU - it’s where his journey in the industry began. From early hands-on experience to today’s market perspective, its story is closely tied to his own.

schedule 5 min read • 15th April 2026

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Powering the giants: Inside the A380's APU

Built for the world’s largest passenger aircraft, the PW980 APU delivers the power needed to support A380 operations on the ground and beyond. From engine starts to in-flight backup, it plays a critical role in keeping this giant moving.

schedule 5 min read • 9th April 2026

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Understanding APU EGT

EGT is one of the most important indicators of an APU’s health. Tracking how it changes over time provides valuable insight into performance, wear, and when maintenance may be needed.

schedule 5 min read • 6th April 2026

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MAXify your GTCP131-9B

The GTCP131-9B may power both the 737NG and 737 MAX - but they’re not directly interchangeable. Understanding what’s required to make an APU MAX-compatible is key to unlocking its full value.

schedule 5 min read • 3rd April 2026

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787’s Electric APU Revolution

The APS5000 APU marks a major shift in aviation—bringing all-electric capability to the Boeing 787. Designed for efficiency, lower emissions, and quieter operation, it represents the future of APU technology.

schedule 5 min read • 2nd April 2026

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What is an APU, and how does it work?

An Auxiliary Power Unit (APU) is a small but critical part of every aircraft, providing the power needed for engine starts, onboard systems, and cabin comfort. Understanding how it works gives valuable insight into aircraft operations and asset value.

schedule 5 min read • 1st April 2026

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APU Transit: Are You Covered?

Transporting an APU might seem routine, but when things go wrong, the consequences can be significant. From handling damage to insurance gaps, understanding your coverage is critical to protecting your asset in transit.

schedule 4 min read • 17th March 2026

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Inside the APS3200 APU

The APS3200 isn’t just another APU—it’s critical to keeping A320 fleets moving. From engine starts to onboard power, understanding its performance can shape how these assets are evaluated and traded.

schedule 2 min read • 17th March 2026

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Decoding APU Acronyms: Your Essential Guide

APU evaluation isn’t as simple as reading TSR or TSO. Without understanding the depth of work behind those numbers, it’s easy to misjudge an asset’s true condition and value.

schedule 5 min read • 16th March 2026

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Choosing the Right APU Stand

The stand your APU sits on isn’t just a piece of equipment—it’s critical to protecting its value. Choosing the right stand can mean the difference between safe delivery and costly damage during transit.

schedule 2 min read • 10th February 2026

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