Service difficulty report · Channel · Boeing 747212B

Difficulty date
August 6, 2007
Submitted
August 31, 2007
Operation
Air carrier
Aircraft
N521UP
Make and model
Boeing 747212B
Aircraft serial
21944
Aircraft time
79,715 hours, 18,925 cycles
Part
Channel
Condition
Cracked
Location
Bs 840
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 RT BS 840 TENSION TIE TO FRAME CONNECTION FOUND NR 8 HOLE CRACK AND NR 20 HOLE OVAL AT FWD CHANNEL.(CRACK LENGTH 0.040"). M/D RT BS 840 TENSION TIE FWD CHANNEL REPAIRED AS PER SRM 53-10-11 FIG 2 REPEAT INSPECTION IS REQUIRED AS PER SRM 53-10-11 FIG 2 TABLE IV AND UPS ASSIGNED MPI NR P19388.

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