SDR UPS06446625

Service difficulty report · Frame · Boeing 747121

Difficulty date: March 10, 2006
Submitted: April 5, 2006
Operation: Air carrier
Aircraft: N681UP
Make and model: Boeing 747121
Aircraft serial: 19661
Aircraft time: 106,939 hours, 27,146 cycles
System (JASC): 5310 · Fuselage Main, Structure
Part: Frame
Condition: Cracked
Location: Bs 340
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

RT BS 340 UPPER DECK FLOORBEAM AT FRAME CONNECTION AREA 1 FASTENER HOLE CRACK AT FRAME, CRACK LENGTH 1/16". U/D BS 340 FLOORBEAM ATT FRAME REPAIRED AS PER HX RS# R53-12-35437, REF NRC# RH61151 FOR WORKING DETAIL AT BTN STR 10AR - 13AR AREA UPON ACCUMULATION OF 10000 FLT CYC PORTFORM A DETAIL VISUAL INSPECTION OF THE FWD AND AFT SIDES OF THE FRAME IN THE REPAIR AREA IS REQUIRE THAT IS TO REPEAT EVERY 3000 CYC, REF UPS EO NR B747-5310-24059-A.