Service difficulty report · Skin · Boeing 7377H4

Difficulty date
August 11, 2023
Submitted
August 24, 2023
Operation
Air carrier
Aircraft
N420WN
Make and model
Boeing 7377H4
Aircraft serial
29825
Aircraft time
72,005 hours, 42,658 cycles
Part
Skin
Part number
UNKNOWN
Condition
Corroded
Location
Zn 200 Fus Top
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

CORROSION ON FUSELAGE CROWN SKIN COMMON TO FASTENER ROWS LOCATED AT: BL 0; STA 1016+7 TO 1016+13; RBL & LBL 9; STA 1016+1 TO 1016+17; AND AT RBL & LBL 12 STA 1016+1 TO 1016+21.<[01] UPDATED STEPS 1-10;[02] UPDATED STEPS 1-10;[03] UPDATED STEP 2 AND 6;[04] ADDED MEASUREMENTS.;[05] OK TO REINSTALL FASTENERS STEPS 1; 3; 5; 7; 9.;[06] COMPLETED STEPS 14;15;[07] PARTIAL STEPS 1; 3; 5; 7 AND 9.;[08] COMPLETED STEPS 1; 3; 5; 7 AND 9.;[09] UPDATED STEPS 2; 4; 6; 8; 10 AND 15;[10] VERIFIED MEASUREMENT TABLE.<BR>TASK COMPLETE;[11] 'AS PER EA 23-153-02495; THE REWORK IS ACCEPTABLE AS A CONTINUE-IN-SERVICE CONDITION WITHOUT REPETITIVE INSPECTIONS AND NO TERMINATING ACTION REQUIREMENTS.';[12] COMPLETE

More about the Boeing 737-7H4