SDR UALA2012061403270

Service difficulty report · Web · Boeing 747422

Difficulty date: June 14, 2012
Submitted: June 15, 2012
Operation: Air carrier
Aircraft: N178UA
Make and model: Boeing 747422
Aircraft serial: 24385
Aircraft time: 90,479 hours, 10,927 cycles
Engine: Pwa PW4056
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Web
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

WEB CRACKED BS 140-160 BL 0 TO RBL 50 FLOOR TO SKIN SHEAR TIE INSTALLATION 65B01870-231. BS 140-160 BL 0 TO RBL 50 FLOOR TO SKIN SHEAR TIE INSTALLATION CRACK REPAIRED IAW ECRA 5311-01552. INSPECTION REQUIRED AT 3,000 FLIGHT CYCLE INTERVAL WITH A THRESHOLD OF 25,927 AIRFRAME TOTAL CYCLES. TEXT IS INCOMPLETE, SEE ECRA 5311-01552. ON NON ROUTINE 0287233 AND 0290259. ACCOMPLISH DETAILED VISUAL INSPECTION IAW PART 2 OF ECRA 5311-01552 BEGINNING AT 25,927 AIRFRAME TOTAL CYCLES.