The type dimension of the Commercial Aircraft Landing Gear & Undercarriage market is primarily divided into fixed, retractable, tricycle, tandem, and multi‑wheel configurations. Fixed gear, while mechanically simple, is confined to smaller utility and training aircraft, contributing marginally—approximately 5%—to overall market revenue due to limited demand in the commercial sector. Retractable systems dominate the market, accounting for roughly 70% of total sales, as they are integral to narrow‑body and wide‑body jets where aerodynamic efficiency drives aircraft performance and operating cost considerations. Tricycle arrangements, a subset of retractable gear, are prevalent on most modern passenger aircraft, reinforcing the dominance of the retractable segment. Tandem gear, used chiefly on high‑performance military and specialized cargo platforms, represents a niche share of about 8%. Multi‑wheel assemblies, employed on heavy‑weight wide‑body and freight aircraft to distribute load and meet runway stress requirements, contribute the remaining 17%, underscoring their strategic importance in supporting the highest thrust class airframes.