Service difficulty report · Transmitter · Boeing 757222

Difficulty date
November 2, 2008
Submitted
December 12, 2008
Operation
Air carrier
Aircraft
N550UA
Make and model
Boeing 757222
Aircraft serial
25398
Aircraft time
64,009 hours, 18,559 cycles
Engine
Pwa PW2037
Part
Transmitter
Part number
18196918
Condition
Inaccurate
Location
Te Flap
Stage of operation
NR
How discovered
O
Nature of condition
W
Precautionary procedure
O

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

What was found

IN ALTERNATE FLAPS - INDICATORS SPLIT AT FLAPS 1. LT INDICATION MOVES TO 1 NORMALLY, RT INDICATOR JUMPS TO ABOUT 15 THEN NEEDLES STAY SPLIT UNTIL LEADING EDGES AND TRAILING EDGES GET TO POSITION 1, THEN INDICATIONS ARE WITHIN LIMITS. RT FLAP AND RT SLAT O/B XMITTERS WERE BOTH SLAVED IN. T/S WIRES FROM FSEU 2 TO FLIGHT DECK ROTARY SWITCH AND ARMING SWITCHES, CKS GOOD. RELAY K10244 CHANGED. REMOVED ALL 3 FSEU 'S AT SAME TIME AND SLAVED IN KNOWN GOOD UNITS. SLAVED IN KNOWN GOOD FLAP. WIRING HAS BEEN RUNG FROM FSEU'S TO RT FLAP & SLAT, LT FLAP & SLAT AND PDU FLAP & SLAT XMITTERS. ALL ARE GOOD & COMPARABLE TO OPPOSITE SIDE. RELAY K10244 CHANGED.