SDR UIEA2012110500512

Service difficulty report · Proximity Switch · Boeing 74787UF

Difficulty date: November 5, 2012
Submitted: November 5, 2012
Operation: Air carrier
Aircraft: N850GT
Make and model: Boeing 74787UF
Aircraft serial: 37562
Aircraft time: 2,087 hours, 353 cycles
System (JASC): 3260 · Landing Gear Position and Warning
Part: Proximity Switch
Condition: Failed
Location: Mlg
Stage of operation: AP
How discovered: O
Nature of condition: N
Precautionary procedure: L

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

What was found

RT WING GEAR HAD AN UP INDICATION AFTER LOWERING GEAR FOR LANDING. QRH COMPLETED WITH ALL GEAR DOWN. CMC REPORTED FAILURE OF PRI AND ALT PROXIMITY SWITCHES FOR RT WING GEAR UP, DOWN AND DOORS. CYCLED GEAR SWITCHES BACK TO NORMAL, RUN CMC TEST IAW AMM 32-09-03 ALL INDICATIONS NORMAL. CMC REPORTS NO EXISTING FAULTS.

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