Service difficulty report · Channel · Boeing 74747UF

Difficulty date
April 24, 2020
Submitted
April 28, 2020
Operation
Air carrier
Aircraft
N477MC
Make and model
Boeing 74747UF
Aircraft serial
29255
Aircraft time
86,263 hours, 15,306 cycles
Part
Channel
Condition
Cracked
Location
Fuselage
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

1 EA CRACK WAS FOUND ON RH BS 740 FASTENER HOLE RUNNING AT 13 O'CLOCK POSITION ON CHANNEL LAYER APPROX 0.030".(<P>CABIN-STA 740 RH FWD TENSION TIE CHANNEL 1 EA FASTENER HOLE SMALL CRACK AREAS OVERSIZE REPAIRED IAW EO: 4453A301-2 AND SB 747-53A2502 REV. 1 FIG 11. </P>)

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