Noticed a huge difference in my B757 after swapping out the original pitot static test set for a new DMC 3500

After using the old analog unit for 7 years, the DMC cut my leak checks from 45 minutes to under 15 on a 767 over in Atlanta last week, has anyone else seen that kind of time save?

3 comments

3 Comments

amy_west12d ago

Did you ever have one of those old analog units that seemed to 'drift' by itself? A buddy of mine at Allegiant swore by his old test set until he pulled his hair out for three days chasing a phantom leak on a 757, finally swapped it out and the new unit found the issue in ten minutes. He said he felt like an idiot for waiting so long.

the_drew12d ago

Honestly, did you ever try just recalibrating the zero point every morning before you started? I had a similar situation on a CRJ where the old analog leak detector would just slowly wander off zero, drove me nuts for a day and a half. Finally, I started zeroing it on ambient air every time I picked it up, and that cleared up most of the phantoms. Still took me longer than it should have to figure out, but swapping to a digital unit fixed the rest of the nonsense. Your buddy's story is pretty spot on though, those old units are just not worth the headache anymore.

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adams.uma11d ago

Hang on, wasn't the DMC 3500 doing leak checks on that 767, not a 757? I think you meant the bigger frame there but it's still a great time save.