AWACS Case Study Avionics

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Proving the PinPoint Capability
Mr. Robichaud asked DiagnoSYS to prove that their system could do the job. DiagnoSYS was provided with a known good (Condition “A”) digital SRU (Shop Replaceable Unit) to develop a TPS (Test Program Set). Less than a week later, Mr. Tom Popolo, Director of Military Sales for North America, called and said it was ready. Mr. Robichaud armed with a defective SRU (Condition “F”) and a GSM-285 printout of the failed component(s) traveled to Florida.

After arrival at DiagnoSYS-USA, the condition “F” asset was provided and tested with the newly developed PinPoint TPS. The results from the GSM-285 printout stated “R&R U25 and U26.” The results for the PinPoint printout stated “R&R U25 and U26, but individual components test good.” After looking at the SRU, a “hair-line crack was discover in a land-area that tied a pin of U25 to a pin on U26. Therefore, the GSM-285 repair callout would have been repeated if the components were replaced as directed each time it was re-run to verify the fix. The PinPoint diagnostic result provided the additional detailed information to prevent this.

Evaluating the PinPoint
The AWACS weapons platform utilizes many different technology types, those being; analog, digital, hybrid (analog/digital), Emitter Coupled Logic (ECL) and Radio Frequency (RF.) The available budget for this effort was limited, so the AWACS Program Office decided to narrow the test spectrum to digital workload only and expand later if funds became available. . . . . more