Craft, Trades & Making · Mechanical Repair
A topic within Mechanical Repair, itself one of 9 topics in that field and part of Craft, Trades & Making.
2 works
F. Stanley Nowlan & Howard F. Heap
Overturns the assumption that more frequent scheduled overhaul makes equipment more reliable, showing from airline failure data that many components fail randomly and are better managed by condition monitoring than by fixed intervals.
United States Department of Defense
Turns Nowlan and Heap's original analysis into standing policy, requiring every DoD maintenance program to justify its schedule against failure consequence rather than default to fixed-interval overhaul.
link checked 17 Sept 2026