ECS Tester Specification Sheet.docx

This is a specification sheet for an Environmental Control System (ECS) Tester manufactured by Howell Instruments (Model H301-4, Part Number H301-4). The tester is designed for troubleshooting and servicing ECS units on aircraft equipped with 41-pin test connectors. The device includes four primary subsystems: a temperature subsystem measuring -65°F to 999°F using platinum resistance temperature detectors; a pressure subsystem with four selectable ranges (0-20 inches H2O, 0-15 PSIG, 0-60 PSIG, and 0-300 PSIG); a multimeter subsystem for measuring AC/DC volts, DC milliamperes, and ohms; and a microprocessor-controlled digital display with self-test functionality on startup. The tester operates on 28±4 VDC at a maximum of 1.5 amperes and features a portable design with a main instrument case and separate accessory case for storing cables, hoses, and probes.

The 162nd Wing, Morris Air National Guard Base, Arizona Army National Guard, is seeking specialized repair services for this ECS Tester on a sole source basis from Howell Instruments Inc. under Solicitation W50S6S26PSA011. The government asserts it does not own proprietary data rights necessary to source repairs from alternative suppliers and cites 10 U.S.C. 3204(a)(1) as authority for the sole source procurement. This pre-solicitation notice invites capability statements and proposals from interested organizations within 10 days of publication; responses should be directed to larry.oldford@us.af.mil. The government indicates it will consider all proposals to determine whether a competitive procurement should proceed.