SDR MALA040570

Service difficulty report · Control Valve · Saab 340B

Difficulty date: September 10, 2004
Submitted: September 23, 2004
Operation: Air carrier
Aircraft: N406XJ
Make and model: Saab 340B
Aircraft serial: 340B406
Aircraft time: 18,889 hours, 20,716 cycles
System (JASC): 3230 · Landing Gear Retraction/Extension System
Part: Control Valve
Part number: HP848430721
Part serial: OFF0019
Condition: Malfunctioned
Location: Mlg
Stage of operation: NR
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

LANDING GEAR CONTROL C/B POPPED WHEN GEAR SELECTED DOWN, RESET C/B AND GEAR EXTENDED. MAINTENANCE REMOVED AND REPLACED LANDING GEAR CONTROL VALVE P/N HP848430-721, S/N OFF 0019, S/N ON 2108, IAW SAAB AMM 32-31-15 OPS CHECKED GOOD. ALSO REMOVED AND REPLACED LANDING CONTROL C/B P/N MS3320-5. OPS CHECK GOOD.

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