SDR CALA2014011490142

Service difficulty report · Skin · Boeing 747422

Difficulty date: January 14, 2014
Submitted: January 14, 2014
Operation: Air carrier
Aircraft: N181UA
Make and model: Boeing 747422
Aircraft serial: 25278
Aircraft time: 92,629 hours, 11,140 cycles
Engine: Pwa PW4056
System (JASC): 5330 · Fuselage Main, Plate/Skin
Part: Skin
Condition: Cracked
Location: Fuselage
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

CRACK REVEALED ON SKIN UNDERNEATH LOWER DRAG SPLICE FITTING ANGLE. FUSELAGE CRACKED SKIN BETWEEN BS 950 - 980 & STRINGER 37R TO 39R. REPAIRED IAW SRM 53-20-01,RPR 2,FIG 201,TABLE III. CAT B REPAIR, SUBSEQUENT INSPECTION REQUIRED IAW SRM 53-20-01, RPR 2, FIG 201 TABLE III. INSPECTION THRESHOLD AT 15000C AFTER REPAIR INSTALLATION INTERVAL 6000C, METHOD HFEC, INTERNAL DETAIL VISUAL.