SDR IPXA2026060280694

Service difficulty report · Skin · Boeing 75724APF

Difficulty date: May 20, 2026
Submitted: June 2, 2026
Operation: Air carrier
Aircraft: N412UP
Make and model: Boeing 75724APF
Aircraft serial: 23852
Aircraft time: 38,243 hours, 25,950 cycles
System (JASC): 5330 · Fuselage Main, Plate/Skin
Part: Skin
Part number: NA
Part serial: NA
Condition: Damaged
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

AFTER REMOVAL OF DME ANTENNA, FOUND SIGNS OF CORROSION. CHECKED LIMITS AT FUSELAGE SKIN AREA ORIGINAL THICKNESS .080 IAW DWG# 143N3471 BLENDED DIMENSIONS L=5.500'', W=2'', X=.004'' MAXIMUM ALLOWABLE X=15%=.012'' AREA FOUND TO BE WITHIN LIMITS IAW B757-200PF SRM 53-00-01-1A-1 ALLOWABLE DAMAGE 1 DETAIL II FIGURE 101

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