SDR CHQ00084

Service difficulty report · Uplock Switch · Saab SF340A

Difficulty date: December 29, 2001
Submitted: December 31, 2001
Operation: Air carrier
Aircraft: N118
Make and model: Saab SF340A
Aircraft serial: 118
Aircraft time: 29,914 hours, 30,059 cycles
System (JASC): 3260 · Landing Gear Position and Warning
Part: Uplock Switch
Condition: Faulty
Location: Nlg
Stage of operation: CL
How discovered: O
Nature of condition: N
Precautionary procedure: A

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

What was found

WHEN GEAR GOES UP TCAS AND OAT FAIL AND GET CONFIG WARNING. REMOVED AND REPLACED NLG UPLOCK SWITCH AND RETRACTED GEAR, OAT OPERATED NORMAL, TCAS OPERATED NORMAL, WHEN BRINGING POWER BACK TO FLIGHT IDLE GOT CONFIG WARNING. INSTALLED NLG SWITCH AND THEN OPS CHECK GOOD, NO CONFIG WARNING.

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