Service difficulty report · Frame · Boeing 747211B

Difficulty date
May 5, 2006
Submitted
May 22, 2006
Operation
Air carrier
Aircraft
N521UP
Make and model
Boeing 747211B
Aircraft serial
21944
Aircraft time
77,205 hours, 18,330 cycles
Part
Frame
Condition
Cracked
Location
Bs 2231
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

LT BS 2231 FRAME INNER FLANGE BETWEEN S24L AND S25L FOUND 1 HOLE CRACK AT FRAME STRAP CRACK LENGTH 1/16". BS 2231 LT FRAME ATTACH STRAP REPAIRED BETWEEN STR 24L TO 26L AS PER SRM 53-10-04 FIG 15. CONTINUED INSPECTION IS REQUIRED AS PER SRM 53-10-04 FIG 115 TABLE 2 AND SB 747-53A2450.