SDR 29GA2018061100001

Service difficulty report · Actuator · Saab 340B

Difficulty date: June 8, 2018
Submitted: June 14, 2018
Operation: Air carrier
Aircraft: N353AG
Make and model: Saab 340B
Aircraft serial: 340B445
Aircraft time: 38,131 hours, 42,523 cycles
Engine: Ge CT79B
System (JASC): 3230 · Landing Gear Retraction/Extension System
Part: Actuator
Part number: AIR864141
Part serial: LK9800398
Condition: Faulted
Location: Nlg
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

WHEN THE LANDING GEAR HANDLE WAS PLACED DOWN, THE HYDRAULIC PUMP RAN FOR 10 SECONDS WITH NO GEAR MOVEMENT, THEN A LOUD BANG FELT THROUGH FLOORBOARD UNDER CAPTAIN`S RIGHT RUDDER PEDAL. GEAR THEN DOWN AND LOCKED. R & R THE NLG RETRACT ACTUATOR IAW AMM 32-31-20-04, OPS CHECKED GOOD.

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