Service difficulty report · Transmitter · Boeing 737824

Difficulty date
January 24, 2025
Submitted
January 27, 2025
Operation
Air carrier
Aircraft
N73276
Make and model
Boeing 737824
Aircraft serial
31594
Aircraft time
72,652 hours, 25,649 cycles
Part
Transmitter
Part number
18173812
Part serial
4486R
Condition
Faulty
Location
Flap Sys
Part time
55,480 hours, 20,720 cycles
Stage of operation
AP
How discovered
O
Nature of condition
F
Precautionary procedure
A

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

What was found

DURING APPROACH FLAPS DID NOT EXTEND PAST 10. NO ASSYMETRY. ALT FLAP EXTENSION USED ATTACHING DFD REPORT SHOWING RT POSITION TRANSMITTER LAGGING AND ALL SKEW SENSORS MATCHED UP. RT FLAP POSITION TRANSMITTER M/E 29-2759-9-0004 P/N 17-1738-12 SHOWS IN STOCK DEN. PREFORMED FSEU BITE CHECK FOUND FAULTS 27-51427 ( FLAP LEVER DISAGREE) ON LAST 8 LEGS AND 27-53280 ( R 28 VAC EXCINV) ON FLT LEGS 3 AND 4 LOOK AT BOTH FLAP TRANSMITTER NO OBVIOUS DAMAGED FOUND FLAPS STUCK AT 10 ON APPROACH TOMC REQUIRES RIGHT FLAP POSITION TRANSMITTER TO BE REPLACED. SEE DFD REPORT NOTING RIGHT FLAP POSITION TRANSMITTER IS LAGGING BEHIND LEFT TRANSMITTER INDICATING RIGHT TRANSMITTER IS FAULTY. REPLACED #2 FLAP POS SENSOR. REF AMM27-58-01/401. OPS TEST GOOD. R/R #2 FLAP POSITION SENSOR PER TOMC REQUEST AMM 27-58-01/401.