Ah, you're right, Pg 11: "The time increment on a task profile is 10 percent of the typical task duration."
What does it say about a roleplaying game that it gives you a rule for finding out how long it takes to "diagnose damage done to an air/raft"? Lord-almighty! 2 and a half hours later: "Yep, here's yer problem. See, right here, this big fist-size hole right in the middle of it." :rofl:
Considering a buddy had a minor issue with a loose bolt in his cessna, and it took the mechanics 3 workdays to find it (over the span of a week), 2.5 hours for an aircraft troubleshoot sounds positively pleasant.