SDR UIEA2020081741774

Service difficulty report · Sequence Valve · Boeing 74745EF

Difficulty date: August 13, 2020
Submitted: August 17, 2020
Operation: Air carrier
Aircraft: N486MC
Make and model: Boeing 74745EF
Aircraft serial: 30608
Aircraft time: 87,826 hours, 15,944 cycles
System (JASC): 3230 · Landing Gear Retraction/Extension System
Part: Sequence Valve
Part number: 2670296
Part serial: 2117
Condition: Failed
Location: Nlg
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: J, A

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

What was found

AFTER T/O GEAR WOULD NOT RETRACT. REPLACED NOSE GEAR RETRACT ACTUATOR (OFF PART: PN65B82585-4, SN&MHB739 REF AMM 32-34-01. OPS AND LEAK CHECK SAT. REMOVED AND REPLACED NOSE GEAR SEQUENCE VALVE, GEAR VALVE - GEAR OPS SEQUENCE OPS AND LEAK CHECK SAT REF AMM 32-34-00.

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