Service difficulty report · Seal · Boeing 7373B7

Difficulty date
March 20, 2004
Submitted
August 24, 2004
Operation
Air carrier
Aircraft
N374US
Make and model
Boeing 7373B7
Aircraft serial
22953
Part
Seal
Condition
Leaking
Location
Edp
Stage of operation
CL
How discovered
O
Nature of condition
K, J
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

ON CLIMB-OUT FROM CLT, PASSING THROGH 7,000 FT, THE A-HYD SYSTEM EMDP LOW PRESSURE LIGHT ILLUMINATED, FOLLOWED SHORTLY THEREAFTER BY THE 'A' HYDRAULIC SYSTEM EDP LOW PRESSURE LIGHT. QUANITY FOR 'A' HYDRAULIC SYSTEM READ ZERO. CREW DECLARED AN EMERGENCY AND RETURNED TO FIELD AT CLT WITHOUT FURTHER INCIDENT. DUE OT LOSS OF NOSE WHEEL STEERING, THE AIRCRAFT WAS TOWED TO THE GATE. MAINTENANCE FOUND THE NR 3 FLIGHT SPOILER ACTUATOR SEAL CUT AND LEAKING. REPLACED SEAL AND REPLACED NR 1 ENGINE DRIVEN HYDRAULIC PUMP, P/N 65075-06, PER MM 29-15-12. REPLACED FILTERS AND FLUSHED HYDRAULIC SYSTEM PER MM 29-15-00. RESERVICED HYDRAULIC RESERVOIR. LEAK TEST AND RUN UP TESTS NORMAL. (M)

More about the Boeing 737-3B7