SDR CHQA200700036

Service difficulty report · Proximity Sensor · Emb EMB145LR

Difficulty date: July 14, 2007
Submitted: July 16, 2007
Operation: Air carrier
Aircraft: N275SK
Make and model: Emb EMB145LR
Aircraft serial: 145345
Aircraft time: 17,251 hours, 14,132 cycles
System (JASC): 3260 · Landing Gear Position and Warning
Part: Proximity Sensor
Condition: Dirty
Location: Mlg
Stage of operation: DE
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

FLIGHT 3420 - IAH-BTR - DURING DESCENT BETWEEN 9,000 AND 10,000 FEET, THE FLAPS WERE SET TO 9 DEGREES AND THE LANDING GEAR WAS SELECTED DOWN. AFTER THREE GREEN WITH DOWN INDICATIONS, EICAS MESSAGE LG AIR/GND FAIL APPEARED. COMPLETED QRH. DECLARED AN EMERGENCY. LANDED WITHOUT INCIDENT. MAINTENANCE CLEANED THE WOW PROX SENSORS AND RESET THE SYSTEM.

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