SDR DELA200700006

Service difficulty report · Downlock Sensor · Lear 35A

Difficulty date: August 20, 2007
Submitted: August 22, 2007
Operation: Air carrier
Aircraft: N431AS
Make and model: Lear 35A
Aircraft serial: 431
Aircraft time: 11,261 hours, 9,416 cycles
Engine: Garrtt TFE731*
System (JASC): 3260 · Landing Gear Position and Warning
Part: Downlock Sensor
Condition: False Indication
Location: Mlg
Stage of operation: AP
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

ON APPROACH, LOWERED LANDING GEAR AND HAD RED LIGHT ON RT MLG. RECYCLED GEAR, SAME RESULT. PERFORMED ELECTRICAL MALFUNCTION ALTERNATE GEAR EXTENSION, SAME RESULT. CHANGED LANDING LOCATION; LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED MALFUNCTIONING RT MLG DOWNLOCK SWITCH. REPLACED SWITCH, PN 1EN1-8. PERFORMED GEAR SWING, OPS CHECK GOOD.

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