SDR CAL960248

Service difficulty report · Hyd Line · Boeing 7373T0

Difficulty date: March 1, 1996
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N14347
Make and model: Boeing 7373T0
Aircraft serial: 23585
System (JASC): 2910 · Hydraulic System, Main
Part: Hyd Line
Condition: Ruptured
Location: B-Hyd System
Stage of operation: CR
Nature of condition: K, J
Precautionary procedure: O

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

What was found

FLT NR 778 - IAH - THE 'B' SYSTEM HYDRAULIC QUANTITY DROPPED TO ZERO WHILE IN CRUISE FLIGHT. ALTERNATE FLAPS WERE USED AND THE GROUND PROXIMITY FLAP INHIBIT SWITCH WAS ACTIVATED IAW THE AIRCRAFT FLIGHT MANUAL. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE HYDRAULIC FLEX LINE TO THE HYDRAULIC MODULE RUPTURED. THE HYDRAULIC FLEX LINE WAS REMOVED AND REPLACED. LEAK CHECK WAS GOOD. (M)