Service difficulty report · Pressure Deck · Boeing 7377H4

Difficulty date
August 17, 2022
Submitted
September 29, 2022
Operation
Air carrier
Aircraft
N431WN
Make and model
Boeing 7377H4
Aircraft serial
29845
Aircraft time
66,939 hours, 39,408 cycles
Part
Pressure Deck
Condition
Cracked
Location
Bs 663
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 AT MAIN CABIN HORIZONTAL PRESSURE WEB STA 663 + 2'; APPROX LBL 34. CRACK LENGTH 0.531'. CRACK FOUND AT MAIN CABIN HORIZONTAL PRESSURE WEB STA 663 + 2' APPROX LBL 34. CRACK LENGTH 0.531'. / TRIMMED THE PART [2] STIFFENERS BELOW THE PART [3] WEB AT APPROXIMATELY LBL 42 AND LBL 34 TO PROVIDE CLEARANCE WITH EXISTING HYDRAULIC LINES REF B737-700 SRM 53-40-51-2R.;[12] CORRECTION SRM FOR STEP# 11: 53-40-51-2R-2;[13] VERIFIED 9-12.;[14] ACCOMPLISHED FLAP PEEN AT TRIMMED OUT AREA ON PART [2] STIFFENERS REF SOPM 20-10-03.;[15] VERIFIED 14. OK TO ALODINE AND PRIME PARTS AND REPAIR AREA.;[16] TREATED AND PRIMED REPAIR PARTS AND REPAIR AREA REF B737-700 SRM 51-20-01-0G-0. MIXED BMS 5-95 SEALANT AT 08.30 AM 09-04-2022 SQUEEZE OUT TIME BY 04.30 PM 09-07-2022 COMPLETED INSTALLATION L/H HORIZONTAL PRESSURE DECK WEB REPAIR PARTS BETWEEN STA 663.75 AND STA 675 FROM LBL 30 TO LBL 60 REF B737-700 SRM 53-40-51-2R-2 FIG 203 TABLE 202.ACCOMPLISHED PERMANENT REPAIR AT L/H HORIZONTAL PRESSURE DECK WEB REPAIR PARTS BETWEEN STA 663.75 AND STA 675 FROM LBL 30 TO LBL 60 REF B737-700 SRM 53-40-51-2R-2 FIG 203 TABLE 202.;ACCOMPLISHED PERMANENT REPAIR AT L/H HORIZONTAL PRESSURE DECK WEB REPAIR PARTS.

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