Service difficulty report · Frame · Boeing 747212B

Difficulty date
July 8, 2007
Submitted
July 27, 2007
Operation
Air carrier
Aircraft
N522UP
Make and model
Boeing 747212B
Aircraft serial
21936
Aircraft time
74,820 hours, 17,560 cycles
Part
Frame
Condition
Cracked
Location
Bs 2231 S23-26r
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

INSPECTION TYPE:C M/D AFTER FURTHER FASTENER REMOVED, RT BS 2231 FRAME INNER CHORD AREA S23R-26R FOUND TOTAL 4 HOLES CRACK AT DIFFERENT STACK UP STRUCTURES (FRAME STRAP, INNER CHORD) (CRACK LENGTH 0.040",1/16", THROUGH THICKNESS). M/DECK BS 2231 FRAME ATTACH INNER CHORD AND STRAP AT BETWEEN STR 22R TO STR 26R AREA REPAIRED AS PER SRM 53-10-04 FIG 115, CONTINUE INSP ARE REQUIRED AS PER SRM 53-10-04 FIG 115 (UPS MPI NR P19305 RAISED FOR CONTINUE INSP.)

More about the Boeing 747 212B