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Tried calibrating an altimeter with a known bad test set just to see what would happen
Pulled the ancient Barfield DPS-100 off the shelf last Tuesday knowing it was out of tolerance and ran a 737 pitot-static check anyway. The altimeter read 120 feet low at sea level, which taught me to never skip the calibration sticker even if you're in a hurry. Anyone else ever get bit by a test set that drifted without you noticing?
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the_miles10h ago
Had a buddy borrow a test set from another hangar, didn't check the cert date. He ran an altimeter check on a King Air and the thing was off by 80 feet at 10,000 feet. Got flagged during a ramp inspection three weeks later. FAA made him redo every static system on that aircraft for the last six months. Took him all weekend and cost the shop a ton in labor. Never again.
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