SDR UIEA201000154

Service difficulty report · Skin · Boeing 7472D7B

Difficulty date: January 31, 2010
Submitted: May 6, 2010
Operation: Air carrier
Aircraft: N522MC
Make and model: Boeing 7472D7B
Aircraft serial: 21783
Aircraft time: 104,134 hours, 20,886 cycles
Engine: Ge CF650E2
System (JASC): 5330 · Fuselage Main, Plate/Skin
Part: Skin
Condition: Corroded
Location: Bs 2020-2040
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 C-CHECK, CORROSION WAS FOUND BETWEEN BS 2020 AND 2040 AT S-46L IN THE 65B04151-2 FUSELAGE SKIN. THE DENT WAS TRIMMED OUT AND A REPAIR DOUBLER WAS INSTALLED IAW SRM 53-30-03, FIG 19. THE 65B04151-2 SKIN PANEL IS MADE FROM 0.063 INCH THICK 2024-T3 CLAD ALUMINUM IAW QQ-A-250/5. PART 1 OF THIS EO DOCUMENTS THE REPAIR OF THE DENT IAW SRM 53-30-03, FIG 19. THE REPAIR PART 1 OF THIS EO IS CATEGORY B AND REQUIRES REPETITIVE INSPECTION IAW PART 2 OF THIS EO.

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