SDR 2006UALA00176

Service difficulty report · Lap Joint · Boeing 737322

Difficulty date: January 31, 2006
Submitted: February 8, 2006
Operation: Air carrier
Aircraft: N338UA
Make and model: Boeing 737322
Aircraft serial: 24242
Aircraft time: 51,247 hours, 28,349 cycles
Engine: Cfmint CFM563C1
System (JASC): 5330 · Fuselage Main, Plate/Skin
Part: Lap Joint
Condition: Cracked
Location: Str 10l Bs 421
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

SKIN LAP AT STR 10L STA 421 TO STA 429 IS CRACKED AT CHEM MILLED STEP. PER JC REPAIR PER MM 53-31-96 OR SRM 53-00-01 FIG 229 IF WITHIN SRM LIMITATIONS. FASTENERS AND DAMAGE REMOVED, NDT FOR CRACKS. INSURANCE CUT MADE & DEBURRED. REPAIR DOUBLERS MADE & AREA TREATED & PRIMED. REPAIRS INSTALLED, PRIMED & PAINTED, REF SRM 53-00-01 REPAIR NR 31 DETAIL XV, 737 NDT MAN. PART 6 51-00-00 FIG 23, FIG 16 & 53-30-00, 057806 FIG 3, 53-30-18. NO DEFECTS, & GNMM 5-0-4-024.