As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT - FL 338 - SHORTLY AFTER TAKEOFF, THE 'A' SYSTEM HYDRAULIC LOW PRESSURE LIGHT ILLUMINATED. HYDRAULIC QUANTITY INDICATED ZERO. CREW RETURNED TO FIELD AT CLT. FLAPS WERE EXTENDED TO 15 DEGREES WITH ALTERNATE SYSTEM AND THE LANDING GEAR WAS LOWERED MANUALLY. THE FLIGHT LANDED WITH NO FURTHER INCIDENT. MAINTENANCE FOUND THE LEFT THRUST REVERSER HYDRAULIC PRESSURE SWITCH LEAKING AT THE B-NUT. REPLACED SWITCH. RESERVICED SYSTEM. OPS CHECK AND LEAK CHECK GOOD. (M)