Service difficulty report · Doubler · Boeing 7377H4

Difficulty date
March 18, 2023
Submitted
May 3, 2023
Operation
Air carrier
Aircraft
N436WN
Make and model
Boeing 7377H4
Aircraft serial
32456
Aircraft time
66,420 hours, 39,287 cycles
Part
Doubler
Condition
Missing
Location
Zn 100 Fus Lower
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

EXISTING DOUBLER REPAIR BETWEEN BS360 TO BS400 AND BETWEEN STR6L TO STR9L IS MISSING TEAR STRAP AND IS MISSING A ROW OF FASTENERS BELOW STR 8L REFERENCE 21-153-03234-TLD 2023-208266<[01] TOOL USED PN. 45MG; SN. 130066401; DUE DATE. 21-SEP-23 TOOL USED EDDY CURRENT EQUIPMENT PN. NORTEC 600D; SN 220272712; DUE DATE 17-DEC-23;[02] REPAIRED BETWEEN BS360 TO BS400 AND BETWEEN STR6L TO STR9L IAW EA 23-153-01050 WIP1 BARCODE TTG8Q00K69EH AND EA 23-153-01050; SEE INDIVIDUAL SIGN OFF BELOW;[03] CORRECTED STEP 2: REPAIRED BETWEEN BS360 TO BS400 AND BETWEEN STR6L TO STR9L IAW EA 23-153-01050 WIP1 AND EA 23-153-01050; SEE INDIVIDUAL SIGN OFF BELOW;[04] CORRECTIVE ACTION STEP 3 CERTIFIED RII

More about the Boeing 737-7H4