Structural Monitoring Systems Plc announced that it has secured the first commercial sales of its ground-breaking Comparative Vacuum Monitoring (CVMTM) technology after receiving its first commercial Purchase Order from Delta Air Lines for an initial four CVMTM Sensor Kits for its Boeing 737NG aircraft. The confirmation of the first sales of the patented CVMTM sensors marks a significant milestone in the Company's history as SMS progresses conversations with major airlines to widen the use of the technology to incorporate further aircraft and applications. Delta Air Lines has indicated that Aft Pressure Bulkhead (APB) sensors will be installed progressively in aircraft undergoing heavy maintenance inspections throughout 2023.

Once installed the sensors allow for monitoring for metal fatigue without the time and expense of a visual inspection, and Delta expects significant savings in maintenance time over subsequent years across their entire fleet of 77 Boeing 738NGs once the installation has been completed. While final FAA approval for this application of the sensors is yet to be finalised, this purchase order underlies the confidence that all parties - Delta, Boeing and SMS - have that it will be forthcoming, especially following the March 2022 granting of a Supplemental Type Certification (STC) for the use of CVMTM Sensor Technology In another B737 application by the FAA.