Service difficulty report · Pressure Deck · Boeing 7377H4

Difficulty date
September 28, 2023
Submitted
October 19, 2023
Operation
Air carrier
Aircraft
N409WN
Make and model
Boeing 7377H4
Aircraft serial
27896
Aircraft time
72,749 hours, 43,518 cycles
Part
Pressure Deck
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 FOUND ON HORIZONTAL PRESSURE DECK WEB STA 663 TO STA 675 LBL 30 TO LBL 45. MARKED LOCATION.<[01] HFEC INSPECTED CUT OUT EDGES IAW 737 NDTM PART 6; 51-00-00 PROCEDURE 23.<BR>NO CRACKS NOTED.<BR>EQUIP USED:<BR>-NORTEC 500D ID: IS000680 CAL DUE: 05/2024;[02] CERTIFIED STEP 11;[03] INSTALLED 100% OF PERMANENT AND TEMPORARY FASTENERS WITHIN SQUEEZE-OUT TIME OF SEALANT C-20 MIXED ON 05-OCT-2023 02:30 UTC PER SOPM 20-50-19.;[04] REPAIRED HORIZONTAL BEADED PRESSURE DECK WEB BETWEEN BS 663-675 LBL 30-LBL 60 IAW SRM 53-40-51-2R-2 REPAIR 2. FIG. 203.;[05] VERIFIED CORRECTIVE ACTION #4<BR>VERIFIED MEASUREMENTS

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