What was found
DURING CLIMB AND LEVEL AT FL 240, WERE UNABLE TO MAINTAIN, CABIN SLOWEST RATE OF ASSENT WAS 700 FPM. DESCENDED AND RETURNED TO JFK. FOUND EQUIPMENT COOLING VALVE STUCK OPEN. REPLACED VALVE. RETURNED TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING CLIMB AND LEVEL AT FL 240, WERE UNABLE TO MAINTAIN, CABIN SLOWEST RATE OF ASSENT WAS 700 FPM. DESCENDED AND RETURNED TO JFK. FOUND EQUIPMENT COOLING VALVE STUCK OPEN. REPLACED VALVE. RETURNED TO SERVICE.