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SEGMENT REPORTING AND SALES BY MAJOR CUSTOMER
 12 Months Ended
Apr. 30, 2025
Segment Reporting [Abstract]  
SEGMENT REPORTING AND SALES BY MAJOR CUSTOMER SEGMENT REPORTING AND SALES BY MAJOR CUSTOMER:
Industry Segmentation
Current Activities: The Company focuses on two primary activities, Professional Services and Aerospace Products.
Aerospace Products
Aircraft Modifications principally includes the modification of customer owned business-size aircraft with capabilities to perform special missions including provisions for radar systems, aerial photography, search and rescue, environmental research, mapping, ISR, and stability enhancing modifications for Learjet, Textron Beechcraft, and Textron Cessna aircraft along with other specialized modifications. We provide these services through our subsidiary, Avcon Industries, Inc. ("Aircraft Modifications" or "Avcon"). Avcon activities include the high quality precision manufacturing of machine parts at Butler Machine.
Special mission electronics principally includes the manufacture, sale, and service of electronics and accessories for control systems used on commercial and government aircraft and vehicles. We provide the products through our subsidiary, Butler National Corporation - Tempe, Arizona.
Butler Avionics sells, installs and repairs aircraft avionics equipment (airplane radio equipment and flight control systems). This includes flight display systems that feature intuitive touchscreen controls with large display to give users unprecedented access to high-resolution terrain mapping, graphical flight planning, geo-referenced charting, traffic display,
satellite weather and much more. Butler Avionics is also recognized for its troubleshooting. Butler Avionics also supports Avcon Industries with the integration and installation of special mission electronics systems.
Professional Services
Butler National Service Corporation ("BNSC") provides management services to the Boot Hill Casino, a "state-owned casino".
Year Ended April 30, 2025GamingAircraft ModificationAircraft AvionicsSpecial Mission ElectronicsOtherTotal
Revenues from customers$38,267 $29,587 $3,377 $12,737 $- $83,968 
Interest expense1,809 313 - 49 6 2,177 
Depreciation and amortization3,207 3,256 27 137 117 6,744 
Operating income (loss)9,142 4,415 (306)5,125 (1,549)16,827 
Year Ended April 30, 2024GamingAircraft ModificationAircraft AvionicsSpecial Mission ElectronicsOtherTotal
Revenues from customers$38,577 $25,061 $2,722 $11,953 $63 $78,376 
Interest expense2,122 229 - 63 33 2,447 
Depreciation and amortization3,014 2,790 20 125 119 6,068 
Operating income (loss)8,916 358 (562)4,726 (199)13,239 
Our Chief Operating Decision Maker (CODM) uses the segment information above to evaluate performance by operating segment, and does not evaluate operating segments using asset or liability information. Other consists of unallocated corporate expenses that are included as part of the Aerospace Products segment.
Major Customers: Revenue from major customers (10 percent or more of consolidated revenue) were as follows:
20252024
Aerospace Products – one customer in 2025 and 202414.8 %15.2 %
Professional Services- - 
In fiscal 2025 the Company derived 25.4% of total revenue from five Aerospace customers. The top customer provided 14.8% of total revenue while the next top four customers ranged from 2.0% to 4.0%. At April 30, 2025, we had one customer that accounted for 32.4% of our accounts receivable. In fiscal 2024 the Company derived 28.5% of total revenue from five Aerospace customers. The top customer provided 15.2% of total revenue while the next top four customers ranged from 1.9% to 5.8%. At April 30, 2024, we had one customer that accounted for 42.5% of our accounts receivable.