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Answering these ROC OEI questions requires use of the graph on Page 22 of the S76 Handbook. When using any graph there is always an inherent accuracy problem. The OEI MCP Rate Of Climb graph is a scanned, enlarged and eventually digitally printed recreation of an original S76 Flight Manual graph. During the process of producing this graph by CASA, some lines became curved and cross-over points a little hard to read. The 2025 ATPL(H) Info Book no longer advises the accuracy required. The actual accuracy applied by CASA has never been stated, however it seems achieving a tolerance of plus/minus 50-60 FPM and plus/minus 80-100 lb is a good target for students. The answers given for this random question generator are based on numerous fixed Weight and ROC data points, with information between these points determined by mathematical interpolation. The answers produced have not been rounded off beyond the nearest whole number. Provided you can achieve a result within plus/minus 50-60 FPM and plus/minus 80-100 lb of the answers given you are going real good! There is never a perfect answer from a graph. Just an accepted average. Please keep that in mind, as you will most likely never perfectly match answers. It's actually unlikely any group of students will ever agree on the exact same answer for any graph question. Staying within tolerance is your only mission. Remember the 'HOT TIP' regarding methods of interpolating on graphs, found in the note at the top of the APLH RQG menu, to further increase your chances of an answer well within tolerance. Please Click Here to return to the login page |