ility Door Kit STC ftSR09376RC-D. 5. Onboard Systems Cargo Hook Suspension System STC #SR01943SE. 6. Dart Aerospace Cargo Mirror STC #SH1031NE. 7. Dart Aerospace Quick Release Heli-Utility Basket & Quick Release Heli-Access-Step STC #SR02996NY. 8. Bristol Aerospace Wire Strike Protection System STC #SR00975AT