Service difficulty report · Barrier · Boeing 7377BD

Difficulty date
September 19, 2023
Submitted
October 20, 2023
Operation
Air carrier
Aircraft
N7720F
Make and model
Boeing 7377BD
Aircraft serial
33922
Aircraft time
57,303 hours, 30,551 cycles
Part
Barrier
Part number
UNKNOWN
Condition
Cracked
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

CRACK ON VAPOR BARRIER LOCATED BS663.75 RBL45.64 AND WL166.5 WING CENTER SECTION 2023-584664<[01] TOOL USED CALIPER P/N:500-464; S/N B17030933; DUE DATE: 17-OCT-23;[02] TOOL USED: HOT BONDER PN: HCS9200B-AV SN: 18196119 DUE DATE: 23/MAY/24.;[03] TOOL USED: SCALE PN: SPX621 SN: 8340225469 DUE DATE: 20/JUL/24.;[04] TOOL USED ULTRASONIC EQUIPMENT PN: USM/DMS GO; SN: USMGO11040089; DUE DATE: 06 FEB 24;[05] REPAIRED VAPOR BARRIER LOCATED BS663.75 RBL45.64 AND WL166.5 WING CENTER SECTION IAW B737-700 SRM 51-70-04-2R-10 REPAIR 10. SEE INDIVIDUAL SIGNOFFS BELOW.;[06] JOB TASK COMPLETED. RII INSPECTION COMPLETED.

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