RNB is a small shop that specializes in the calibration / repair of Chadwick – Helmuth equipment only. This enables us to provide quick turn times when required by you, the customer. Our normal turn time, if there are no problems is 5 – 7 working days. AOG’s, rushes, can be a day or two. We also provide personalized service such as when we find an Accelerometer / Velocimeter just within tolerance. We let the customer know it will probably require replacing in the future and they should monitor it when using the balance equipment.

The factory has issued a statement- Honeywell Obsolescence Update (PDF) – advising that the majority of the old equipment is considered obsolete and not repairable. However RNB is still able to calibrate / repair the majority of these units:  Read the RNB Aviation Capabilities List.

The calibration cycle of Chadwick – Helmuth equipment has always been a mystery. After calibrating / repairing Chadwick – Helmuth equipment for 25 years and for all segments of the aviation industry, RNB has its own recommendations – Read them now in PDF format.

The official factory statement on calibration of the Chadwick – Helmuth equipment is outlined in a letter from Honeywell – Honeywell Calibration Letter (PDF)