SDR UPS02439579

Service difficulty report · Strap · Boeing 747121

Difficulty date: September 5, 2002
Submitted: October 4, 2002
Operation: Air carrier
Aircraft: N683UP
Make and model: Boeing 747121
Aircraft serial: 20353
Aircraft time: 81,157 hours, 20,074 cycles
System (JASC): 5310 · Fuselage Main, Structure
Part: Strap
Condition: Cracked
Location: Bs 800
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

DURING C CHECK, CRACK FOUND ON LT BS 800 FRAME STRAP AT STR 16 AREA AT FWD MOST LOWER FASTENER HOLE BY APPROX 3/8 LONG RUNNING AFT & FWD TO THE EDGE. LT BS 800 FRAME STRAP AT STR 16 & STR 17 MOST LWR FASTENERS HOLE CRACKED REPAIRED AS PER RS R53-22-34894 & EO B747-5310-17628A REPAIRED DETAILS REF NRC#UW59712 CONTINUE INSPECTIONS EVERY 3000 FLT CYCLES PER REF /A AS PER RS R53-22-34894 & EO B747-5310-17628A.