The chairman of the West Yorkshire Police Federation, Jon Christopher, told Calendar:
"Clearly Sir Norman is no longer a serving officer. It is now open to the public debate to see what, if anything, can be done against him if that's the will of the public."
More top news
The father of a British victim of the Germanwings disaster has urged airlines to take action to look after pilots "properly".
A brighter, mild but windy afternoon with occasional showers. Unsettled start on Sunday with a mix of sun and showers later, feeling cooler
British Summer Time begins on Sunday. We may lose an hour in bed but the sun won't set until around 7.35 pm on Sunday evening