Aviation MRO - Component - APU Overhaul: Market Size & Forecast 2026

The global APU overhaul market sits at approximately USD 3.8 billion in 2025 (base year), held in a structurally tight balance between commercial aviation fleet expansion, military recapitalisation programmes, and the inescapable reality that APU life-limited parts drive roughly 35 percent of finished overhaul cost regardless of operator efficiency. The market is neither booming nor collapsing; it is running hot on capacity while labour and specialty materials constrain throughput. > **Analyst Take.** Our view: the single most underpriced risk in this category is NOT cost inflation, it is OEM approval dependency. Honeywell GTCP131-9 and Pratt & Whitney Canada APS2300/APS3200 APUs dominate the installed base, and only OEM-authorised facilities can source certain LLPs. Buyers negotiating overhaul contracts in 2026 who assume open-market LLP substitution are negotiating from incomplete info

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