Actual scales/items on fatigue in aviation seem rather hard to come by, some potential avenues I could find in a brief research:
ingentaconnect Perceived Fatigue for Short- and Long-Haul Flights: A Survey of 7... (unfortunately, the link to the survey given in the article seems to be no longer working, but contacting the authors may be worth a try).
Another reference I found mentions a study conducted by the European Business Aviation Association, see reference below, so contacting the EBAA and/or Mark Rosekind from the NTSB (
About Us - NTSB - National Transportation Safety Board) might be an option, too.
"The European Business Aviation Association (EBAA) has set a July 15 deadline for submissions to its pilot fatigue survey. EBAA plans to present the results to the European Aviation Safety Agency (EASA), which is writing regulations on pilot flight times for implementation among all EASA members beginning in June 2012. Current regulations vary among states. Historically, rules for business aviators are generally the same as those for airline pilots. EBAA hopes the survey will result in regulations more tailored to business aviation operations. The web-based survey, which is being overseen by sleep specialist Mark Rosekind, a nominee for a seat on the U.S. National Transportation Safety Board, would be a challenge to the sleepy-headed since the 10-page document includes 70 questions. Some 700 pilots have answered the survey with a month to go; the target is to collect 1,000 responses."
(William Garvey: Aviation Week & Space Technology; 6/14/2010, Vol. 172 Issue 23, p77)
If I find the time, I can try to find some more sources next week at the office, where I have better access to the databases of our university.