Service difficulty report · Sequence Valve · Boeing 757204

Difficulty date
April 4, 2026
Submitted
April 6, 2026
Operation
Air carrier
Aircraft
N924FD
Make and model
Boeing 757204
Aircraft serial
26267
Aircraft time
71,517 hours, 29,962 cycles
Part
Sequence Valve
Part number
26702889
Condition
Failed
Location
Zone 900
Stage of operation
AP
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

NOSE GEAR FAILED TO EXTEND NORMALLY WHEN GEAR HANDLE WAS MOVED INTO THE DOWN POSITION. NOSE GEAR EXTENDED USING THE ALTN GEAR EXTEND SWITCH. LDG GEAR MONITOR STATUS MESSAGE DISPLAYED. AMM: 32-34-05-4 COMPLETED INSTALL OF NOSE GEAR DOOR OPERATED SEQUENCE VALVE REF AMM 32-34-05-4. OPS AND LEAK CHECK GOOD. REMOVED FROM MEL CONFIG. AMM: 32-34-05-4 REMOVED AND REPLACED NOSE GEAR DOOR OPERATED SEQUENCE VALVE UP TO AND INCLUDING STEP 3. C. (7). AMM: 32-34-05-4 COMPLETED INSTALL OF NOSE GEAR DOOR OPERATED SEQUENCE VALVE REF AMM 32-34-05-4. OPS AND LEAK CHECK GOOD. REMOVED FROM MEL CONFIG.