Service difficulty report · Proximity Switch · Boeing 767322

Difficulty date
September 24, 2023
Submitted
September 27, 2023
Operation
Air carrier
Aircraft
N677UA
Make and model
Boeing 767322
Aircraft serial
30029
Aircraft time
78,258 hours, 15,292 cycles
Part
Proximity Switch
Part number
849704
Part serial
C977
Condition
Damaged
Location
Sta 328
Part time
822,061 hours, 718,989 cycles
Stage of operation
CL
How discovered
O
Nature of condition
F, J
Precautionary procedure
B, A

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

What was found

LE SLAT ASYM CAUTION UPON FLAP RETRACTION BETWEEN 1 AND UP FLAP NEEDLES BOUNCED DURING PILOT DEBRIEF THE CAPTAIN INDICATED THAT THE FLAPS/SLATS NEVER DID GET TO 0 POSITION DETENT. FSEU BITE SHOWED 1 FAULT. LE OUTBD ASYM WITH MESSAGE 27-80121 MESSAGE WAS ACTUALLY 27-81021. ACP RESISTANCE AND INDUCTANCE MEASUREMENTS ON RT HAND OB LE SLATS REF AMM 27-88-99-206-001. NO SIGNIFICANT FINDINGS. ACP VISUAL CHECK OF UNIT, ASSY, PRO OFF 76-3260-9-0005 0977 ON 76-3260-9-0005 9028 UNIT, ASSY, SENSORS & CHECKED GAP MEASUREMENTS REF AMM 27-88-01. NO FINDINGS. ACCOMPLISHED LE AND TE FLAP OP'S CHECK PER AMM 27-81-00/27-51-00. FLAP OPERATION AND INDICATION WAS NORMAL WITH NO EICAS MSG'S OR WARNING LIGHT.