What was found
DISCOVERED PRE-COOLER LEAKING WHILE DOING OTHER TROUBLESHOOTING DURING ENGINE RUN-UP. THESE PRE-COOLERS HAVE A HISTORY OF CRACKING WITH AGE AND USE. INSTALLED NEW PRE-COOLER.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DISCOVERED PRE-COOLER LEAKING WHILE DOING OTHER TROUBLESHOOTING DURING ENGINE RUN-UP. THESE PRE-COOLERS HAVE A HISTORY OF CRACKING WITH AGE AND USE. INSTALLED NEW PRE-COOLER.