Service difficulty report · Fseu · Boeing 737924ER

Difficulty date
October 6, 2019
Submitted
October 7, 2019
Operation
Air carrier
Aircraft
N37471
Make and model
Boeing 737924ER
Aircraft serial
37102
Aircraft time
22,840 hours, 7,999 cycles
Part
Fseu
Part number
285A12002
Condition
Intermittent
Location
Te Flaps
Stage of operation
LD
How discovered
O
Nature of condition
F
Precautionary procedure
O

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

What was found

FLAPS FAILED TO EXTEND BEYOND 5. UNABLE TO CORRECT. LANDED WIT H FLAPS 5. PSEU ILLUM. ACCOMPLISHED BITE TEST OF PSEU, FOUND FAULTS 32-62009 AND 32-62010. MOVED FLAPS TO 40 AND BACK TO 0, FAULTS WENT AWAY AND PSEU LIGHT EXTINGUSHED. T/S REF FIM 27-81-00-810-806 AND FOUND FAULT 27-81357 LE SLAT FE UCM ON THE FSEU. ITS AN INTERMITTENT INACTIVE/ LATCHED EXTERNAL FAULT. ITS FAULTING SLATS S1,S2,S3, S6,S7,S8. RAN LEADING EDGE UNCOMMANDED MOTION TEST REF AMM 27-81-00-700-804 AND NO FAULTS NOTED. NEW FSEU ON ORDER TO LAS FOUND NO FAULTS FOR LEGS 0 THRU 6, FAULTS NOTED HAPPEND ON LEGS 7 AND 8, REPLACED FSEU AS A PERCAUTION REF AMM 27-51-01, ALL OP CHECKS PASSED REF AMM 27-51-00-740-801, 27-81-00-730-801, 27-81-00-700-804, 27-51-00-740-803, 27-51-00-740-802 ADD EMP:U159655 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1034471 SN OFF 4776 UNIT, FLAP & SL OFF 29-2751-9-0049 4776 ON 29-2751-9-0049 0190