Ground Support Equipment & Test Benches
Flight Instrument Test Benches
Combined Test Bench for ROCI and ASI
Combined bench for Rate of Climb and Air Speed Indicators on Cheetah and Chetak
The Combined Test Bench for ROCI/ASI is designed to test, troubleshoot, service and calibrate flight instruments fitted on Cheetah and Chetak helicopters — specifically the Rate of Climb Indicator Type 9011 and Air Speed Indicators Types 103, 103-1, 103-2, 103-5, 105, 9103 and 9103-5. The bench comprises a vacuum chamber, vacuum/pressure source, a combined control panel for ROCI and ASI, manometers, and interconnecting hoses, electric cables and accessories. It supports leak tests under both negative and positive pressure, calibration accuracy checks across multiple altitude bands for the ROCI, and scale error tests for the ASI.
KEY DETAILS
• Part No. SE-TS-CTB-ROCI/ASI • For Cheetah and Chetak helicopters • Tests ROCI Type 9011 • Tests ASI Types 103, 103-1, 103-2, 103-5, 105, 9103, 9103-5 • Assemblies: vacuum chamber, vacuum/pressure source, ROCI/ASI control panel, manometers, hoses and cables • ROCI leak tests: -500 mm Hg negative, +250 mm Hg positive • ROCI accuracy checks at 500, 1000, 1500 and 2000 ft/min across 2,000–7,000 ft, 15,000–20,000 ft and 5,000–40,000 ft bands • ASI leak tests: -500 mm Hg negative, +250 mm Hg positive • ASI scale error tests
