SDR UIEA200200048

Service difficulty report · Uplock Switch · Boeing 74747UF

Difficulty date: September 7, 2002
Submitted: October 31, 2002
Operation: Air carrier
Aircraft: N497MC
Make and model: Boeing 74747UF
Aircraft serial: 29258
Engine: Ge CF680C2*
System (JASC): 3260 · Landing Gear Position and Warning
Part: Uplock Switch
Condition: Out Of Adjust
Location: Rt Mlg
Stage of operation: CL
How discovered: O
Nature of condition: N
Precautionary procedure: O

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

What was found

AFTER TAKE OFF THE RIGHT GEAR DID NOT RETRACT. INDICATED INTRANSIT. GEAR EXTENDED DOWN OK BUT DID NOT RETRACT AGAIN. STATUS MESSAGE GEAR DISAGREE, GEAR MONITOR. T/S BOTH RIGHT GEAR UPLOCK SWITCHES S402 AND S1637. ADJUSTMENT OUT OF LIMIT, READJUSTED BOTH SWITCHES IAW MM. PERFORMED GROUND CHECK AND FOUND ALL, OK.

More about the Boeing 747-47UF