Photo Courtesy of Department of Defense H296B-3APU Test SetAuxiliary Power Unit System Test Set Designed for the CH-47 Chinook helicopter, the H296B-3 is a flight line diagnostic tool for: • Auxiliary Power Unit (APU) • Electronic Sequencing Unit (ESU) • Digital Electronic Sequencing Unit (DESU) Housed in a portable, ruggedized container with cable storage, the H296B-3 features three available testing modes: • Dynamic Test • Static Test • Bench Test Accessories: • Dynamic Check Cable • Static Check Cable • Shorting Plug • APU Adapter Box/Cable (optional) Howell Instruments, Inc. 8945 South Freeway Fort Worth, Texas 76140 www.howellinst.com 817-336-7411 Fax: 817-336-7874 [email protected]

Portable engine test sets & trimmers Simulates APU signals and sequences to verify proper ESU/ DESU operation. Monitors the signals between the APU, ESU/DESU and Cockpit Advisory Panel to verify operational signals and sequences. HARNESS TO AIRFRAME Simulates APU signals and sequences in back shop environment to verify proper ESU/DESU operation. Howell Instruments, Inc. • 8945 South Freeway • Fort Worth, Texas 76140 www.howellinst.com • 817-336-7411 • Fax: 817-336-7874 • [email protected] ©2009 Howell Instruments, Inc.