As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT WROTE UP ALTIMETER SPLIT, WITH MADC NR 2 SHOWING 240' DIFFERENCE FROM MADC NR 1 & 3. MX PERFORMED PITOT/STATIC LEAK CHECK WHICH SHOWED A STATIC LEAK BEYOND LIMITS FOR MADC NR 2. TROUBLESHOT SYS AND FOUND THE LOWER LT PITOT/STATIC PROBE TO BE LEAKING. UPON EXAMINATION OF THE PROBE, FOUND TOOLING MARKS FROM THE MFG AT THE AFT PART OF THE TUBE WHICH RESULTED IN SMALL HOLES WHICH ENABLED THE STATIC AIR PRESSURE TO LEAK OUT.