N640CS

The airframe bearing tail number N640CS is a Boeing-built narrowbody completed in 1993, manufacturer serial number 26078. This airframe is a Boeing 737-400 (737-4Y0) and is recorded in US civil registration. The airframe is owned by CSDS ASSET MANAGEMENT LLC, a corporation based in Marana, AZ, US, a corporate lessor/asset manager that indicates a non-airline ownership profile and potential availability for lease or remarketing. Recent registry data and valuation place the airframe in a mid-life used condition with an estimated market value of $3,950,000.

The aircraft is outfitted in a 156-seat passenger configuration described as a high-density/JPATS transport layout, aligning it with short- to medium-haul, high-capacity missions such as dense domestic routes, military passenger transfer, or ad-hoc charter employment. Avionics and safety equipment listed for this specific airframe include TCAS II, EGPWS, DFDR/SSCVR and triple VHF communications (operator-configured), supporting regulatory compliance and basic situational awareness for civil operations. Typical operations for this configuration would prioritize high-utilization cycles, frequent turnarounds, and standard 737-400 maintenance considerations driven by older-generation engines and airframe fatigue life. The US registration and corporate ownership suggest maintenance and export/lease arrangements will follow prevailing US FAA procedures.

The Boeing 737-400 (737-4Y0) sits within the Classic 737 family, offering moderate range and capacity for dense short-to-medium sectors; with a cruise of 485 kts and a 2,060 nm range it competes economically against regional jets and early-generation narrowbodies in secondary markets. Demand is primarily from operators seeking low-cost, high-density capacity or from lessors and specialty operators moving older jets into cargo, military, or high-density passenger roles. Resale and maintenance factors include continued support for the CFM56-3 series, airframe age (1993 build), and market depreciation reflected in the circa $3.95M valuation.