As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMB OUT OF KIND R'CVD LEVEL ONE ALERT"AIR SYS 1 OFF". FOLLOWED QRH PROCEDURES. INSTALLED NEW SEAL ON I/B SIDE OF ARROW COUPLING REPOSITIONED COUPLING LEAK CHECKED GOOD, REF AMM 36-14-05-2. ACCOMPLISHED PNEU SYS #1 DECAY CHECK REF AMM 36-00-04-5 DECAY FOUND TO WITHIN LIMITS.OK TO CONTINUE.