SDR IPXA2026102413332

Service difficulty report · Skin Panel · Boeing 75724APF

Difficulty date: September 18, 2026
Submitted: October 28, 2026
Operation: Air carrier
Aircraft: N402UP
Make and model: Boeing 75724APF
Aircraft serial: 23724
Aircraft time: 39,932 hours, 27,205 cycles
System (JASC): 4910 · APU Cowling/Containment
Part: Skin Panel
Part number: 148N3750
Condition: Delaminated
Location: Zone 300
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

LOWER AFT APU PANEL BETWEEN STA 1963 TO 1992 IS DELAMINATED. INSTALLED/BONDED ALL REPAIR DOUBLERS AND FILLERS ON INNER SIDE OF LOWER AFT APU PANEL BETWEEN STA 1963 TO 1992 AND CURED AT 310'F DEGS FOR 360 MINUTES REF 51-70-10-2R-0 REPAIR 4 PARA,4 AND SRM 51-70-10-2R-0 PARA, 17, 18 AND 20 TABLE 208.

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