SDR SWIA972311

Service difficulty report · Downlock Sensor · Emb EMB120ER

Difficulty date: January 25, 2001
Submitted: February 1, 2001
Operation: Air carrier
Aircraft: N251YV
Make and model: Emb EMB120ER
Aircraft serial: 120251
Aircraft time: 18,500 hours, 26,075 cycles
Engine: Pwa PW118B
System (JASC): 3260 · Landing Gear Position and Warning
Part: Downlock Sensor
Condition: Failed
Location: Nlg
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: A

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

What was found

SELECTING GEAR UP NOSE INDICATION WAS A GREEN, B RED. WHEN CYCLING TO GEAR DOWN INDICATION - LEFT: A & B RED, NOSE: B RED, A GREEN, RIGHT; A&B RED. AFTER 5 MINUTES GEAR DROPPED BY ITSELF AND 6 GREEN LIGHTS. REPLACED DOWNLOCK PROX SENSOR FOR A-SYSTEM ON THE NOSE GEAR. PERFORMED GEAR SWING. OPS CHECKS GOOD.

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