SDR IPXA2026061688559

Service difficulty report · Skin · Boeing 74744AF

Difficulty date: May 28, 2026
Submitted: June 23, 2026
Operation: Air carrier
Aircraft: N577UP
Make and model: Boeing 74744AF
Aircraft serial: 35666
Aircraft time: 63,511 hours, 9,924 cycles
System (JASC): 5730 · Wing, Plate/Skin
Part: Skin
Part number: 65B135033J
Part serial: 74707050397
Condition: Eroded
Location: Zone 500
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

ERODED SKIN, LT WING L/E LOWER PANEL 521EB FWD EDGE. IAW SRM 51-70-07-0G-0 REV. 106 REMOVED THE EROSION MATERIALS AND CLEAN. BOND THE REPAIR PLIES WITH FILM ADHESIVE CURED AT 260 F FOR 130 MINUTES WITH A MINIMUM VACUUM OF 22 IN/HG. IAW AMM 20-51-01-912-008, REV 116, INSTALLED PANEL 521EB.

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