SDR CALA2019072401250

Service difficulty report · Sequence Valve · Boeing 757324

Difficulty date: July 24, 2019
Submitted: July 24, 2019
Operation: Air carrier
Aircraft: N75858
Make and model: Boeing 757324
Aircraft serial: 32817
Aircraft time: 48,188 hours, 15,387 cycles
System (JASC): 3230 · Landing Gear Retraction/Extension System
Part: Sequence Valve
Condition: Malfunctioned
Location: Mlg
Stage of operation: CR
How discovered: O
Nature of condition: E, J
Precautionary procedure: A

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

What was found

GEAR DISAGREE WARNING, GEAR DOORS. CREW REPORTS GEAR DISAGREE AND GEAR DOORS EICAS ALONG WITH DOORS LIGHT ON FWD INSTRUMENT PANEL. VIBRATION FELT IN NOSE GEAR AREA. CHECKED PSEU FAULTS AND FOUND 6 FAULTS STORED FROM LAST LEG. GEAR NOT IN POS WITH CODES 32-09169, 32-09101. GEAR DOOR NOT CLOSED WITH CODES 32-61142, 32-61139. GEAR NOT RETRACT WITH CODES 32-61206, 32-61226. AWAITING REPLACEMENT OF MLG SEQUENCE VALVE.