SDR P5CA9800027

Service difficulty report · Sequence Valve · Boeing 747123

Difficulty date: January 19, 1998
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N859FT
Make and model: Boeing 747123
Aircraft serial: 20326
System (JASC): 3230 · Landing Gear Retraction/Extension System
Part: Sequence Valve
Part number: 2670296
Condition: Cracked
Location: Nlg
Stage of operation: IN
Nature of condition: K
Precautionary procedure: K

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

What was found

ON MAINTENANCE WALK AROUND, FOUND NOSE LANDING GEAR OPEN DOOR SEQUENCE VALVE ASSEMBLY LEAKING. VALVE FOUND TO BE CRACKED. REMOVED AND REPLACED NOSE GEAR, OPERATED DOOR SEQUENCE VALVE IAW BOEING M/M 32-34-07, LEAK AND OPERATIONAL CHECK OK.