SDR IPXA2024101981219

Service difficulty report · Stringer Splice · Boeing 75724APF

Difficulty date: October 5, 2024
Submitted: October 21, 2024
Operation: Air carrier
Aircraft: N446UP
Make and model: Boeing 75724APF
Aircraft serial: 27735
Aircraft time: 37,525 hours, 20,436 cycles
System (JASC): 5313 · Fuselage Main, Longeron/Stringer
Part: Stringer Splice
Part number: 146N382045
Condition: Corroded
Location: Zone 100
Stage of operation: IN
How discovered: 9
Nature of condition: O
Precautionary procedure: K

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

What was found

HEAVY CORROSION FOUND AT STR 20LH PRODUCTION SPLICE, BETWEEN STA 1620 TO STA 1640. INSTALLED STRINGER CLIP AND NEW PRODUCTION SPLICE USING FASTENER PN: BACR15FV6KE8, BT: 0004204699; PN: BACB30NX6K3X, BT: 0004325757; BACB30NX8K4, BT: 0004296514. IAW SRM 51-40-02.

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