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I used to torque fuel lines by feel, now I log every value in a notebook after a close call
For years I snugged B-nuts by hand and called it good enough, then a return line at the #2 engine started weeping on a King Air and I found it two flats loose. Now I mark each fitting with a paint pen and write the torque reading in a pocket notebook, one line per line. Costs me maybe 4 extra minutes per job, has anyone else had a fitting back off that you swore was tight?
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oliver_fisher1mo ago
Two flats loose on a B-nut is a lot, that's not just vibration working it back, that's a fitting that never really got snugged in the first place. Marking with a paint pen is smart but the line itself won't tell you much unless you check it right after a run, since the seal is usually what seats the nut, not the torque number by itself.
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