SDR 2003UALA00262

Service difficulty report · Tiller · Boeing 747422

Difficulty date: March 6, 2003
Submitted: March 18, 2003
Operation: Air carrier
Aircraft: N109UA
Make and model: Boeing 747422
Aircraft serial: 26906
Aircraft time: 18,368 hours, 2,279 cycles
Engine: Pwa PW4056
System (JASC): 3250 · Landing Gear Steering System
Part: Tiller
Condition: Failed
Location: Nlg Steering
Stage of operation: TX
How discovered: O
Nature of condition: O
Precautionary procedure: O

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

What was found

NOSE WHEEL TILLER DID NOT RESPOND TO INPUT. NOSE WHEELS, LEFT WING AND BODY GEAR WENT OFF OF TAXIWAY. REPLACED NOSE GEAR STEERING. METERING VALVE. ADJUSTED NOSE GEAR STEERING CABLES NWS2A & NWS2B TO PROPER TENSION. FOUND TO BE 10LBS. REPLACED BRAKES FOUR POSITIONS LWG. REPLACED TIRES FOUR POSITIONS LWG AND LT & RT NLG. ACCOMPLISHED NOSE GEAR STEERING EXCEEDANCE CHECK AND LANDING GEAR PORTION OF HIGH SIDE LOAD PHASE 1 INSPECTION.