Poor chart + bad weather + fatigue (human factors) = accident
Pure James Reason, and additionally the authorities are the mice.
If we can deduce high risk (threats to a safe operation) by chart analysis then why can’t the authority put defences in place? It would be appalling to blame a crew or operator for falling into a trap set by the safety regulator.
The NTSB recommended that all charts include a range/altitude table, but the FAA rejected the proposal and is not taking any action. (A-00-015, 27 Jan 2000, from Air Safety Week 11 Oct 04). The FAA believes that an additional chart would add clutter to the chart !!!! More like cluttered thinking.
Stu Bigzorst I read the chart as requiring DME IRK (114.6) to be used for the distances during the descent. Have I misread this (long time since I flew in the US), or have I misunderstood your post that indicates the use of I-IRK (111.5) for distance ?