SDR USAASB01336

Service difficulty report · Downlock Sensor · Boeing 737301

Difficulty date: December 4, 2001
Submitted: January 7, 2002
Operation: Air carrier
Aircraft: N337US
Make and model: Boeing 737301
Aircraft serial: 23235
System (JASC): 3260 · Landing Gear Position and Warning
Part: Downlock Sensor
Part number: 189915
Condition: Intermittent
Location: Nlg
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

CLT - FLT 841 - ON APPROACH TO CLT, WHEN THE GEAR WAS EXTENDED, THE CREW RECEIVED GREEN INDICATIONS FOR THE MAIN GEAR AND RED FOR THE NOSE GEAR. ON THE GO-AROUND, THE GEAR WAS CYCLED, AT WHICH TIME THE NOSE GEAR APPEARED RED, THEN CHANGED TO GREEN. THE FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE NOSE GEAR LOCK SENSOR. (M)