Service difficulty report · Skin · Boeing 7377H4

Difficulty date
August 17, 2021
Submitted
September 27, 2021
Operation
Air carrier
Aircraft
N208WN
Make and model
Boeing 7377H4
Aircraft serial
29856
Aircraft time
52,294 hours, 30,932 cycles
Part
Skin
Condition
Corroded
Location
Fuselage
Stage of operation
IN
How discovered
9
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

CORROSION AROUND FASTENER AT BS 887+10, BL 0, WL 306.5 ON FUSELAGE SKIN UNDER DORSAL FIN. REMOVED THE FASTENER IAW SRM 51-40-02. REMOVED CORROSION AND PERFORMED VISUAL INSPECTION WITH A 10- POWER MAGNIFYING GLASS IAW SRM 51-10-02, PARA 15 A 6 A. NO ADDITIONAL DAMAGE NOTED. HFEC INSPECTED SKIN BLENDOUT AREA IAW NDTM P6, 51-00-00, PROC 23. NO DISCREPANCIES NOTED. INSPECTED OPEN HOLE IAW NDTM P6, 51-00-00, PROC 16. NO CRACKS NOTED. UT INSPECTED SKIN BLENDOUT AREA IAW NDTM P4, 51-00-00, PROC 2. FOUND OUT OF LIMITS IAW SRM 53-00-01-1A-1, FIG 103, DETAIL D. INSTALLED THE FASTENER ACCOMPLISHED ON EA 21-153-02635-WIP1.

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