Service difficulty report · Intercostal · Boeing 75724APF

Difficulty date
November 13, 2025
Submitted
December 29, 2025
Operation
Air carrier
Aircraft
N414UP
Make and model
Boeing 75724APF
Aircraft serial
23854
Aircraft time
38,641 hours, 25,890 cycles
Part
Intercostal
Part number
146N5425U19
Condition
Corroded
Location
Zone 100
Stage of operation
IN
How discovered
V
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

DURING DVI INSPECTION ON EO-91261-REQ1 REV3 FOUND AFT CARGO COMPARTMENT. BILGE AREA WITH CORROSION ON WEB LOCATED APPROX STR 30 BETWEEN BS 1400 AND 1420. REMOVED AND REPLACED INTERCOSTAL PER DRAWING 146N5425 AND IAW SRM CHAPTER 51 GUIDELINES, USING THE ORIGINAL PARTS AS SAMPLE IAW GMM REV 12 SECTION 09-08. REVIEWED

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