Service difficulty report · Pressure Deck · Boeing 7377H4

Difficulty date
May 13, 2021
Submitted
June 28, 2021
Operation
Air carrier
Aircraft
N207WN
Make and model
Boeing 7377H4
Aircraft serial
34012
Aircraft time
52,378 hours, 31,227 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 NOTED APPROXIMATELY WL 203; BS 663+2; RBL 43; COMMON TO HORIZONTAL BEADED PRESSURE DECK. ; CRACK NOTED APPROXIMATELY WL 203; BS 663+2; RBL 43; COMMON TO R/H HORIZONTAL BEADED PRESSURE DECK. / [01] VERIFIED THE APPLICABILITY OF SRM 53-40-51-2R-2 REPAIR2<BR>REMOVED ALL FASTENERS COMMON TO THE REPAIR AREA <BR>CUT AND REMOVED THE DAMAGED PART OF THE WEB AT THE HORIZONTAL BEADED PRESSURE DECK BS 663 TO BS 675 RBL 38 TO RBL 60 IAW SRM 53-40-51-2R-2 REPAIR2 STEPS 4; A; B; C 2;3; [02] VERIFIED THE APPLICABILITY OF SRM 53-40-51-2R-2 REPAIR2; [03] VERIFIED REMOVAL OF ALL FASTENERS COMMON TO THE REPAIR AREA; CUT-OUT AND REMOVAL OF THE DAMAGED PART OF THE WEB AT THE HORIZONTAL BEADED PRESSURE DECK BS 663 TO BS 675 RBL 38 TO RBL 60 IAW SRM 53-40-51-2R-2 REPAIR2 STEPS 4; A; B; C 2;3; [04] CORRECTED MEASUREMENTS; [05] COMPLETED SRM 53-40-51-2R-2 STEPS 4.D.(1)-(3) AND (5) INCLUDING HFEC ALONG TRIM LINE AND EXISTING OPEN FASTENER HOLES. NO CRACKS FOUND. NO COUNTERSINKS PRESENT. COMPLETED DETAILED VISUAL INSPECTION AROUND INBD AND OUTBD SECTIONS. NO DEFECTS FOUND. CAL ID ISOOO450 S/N N500D000M120071 AND ATS2407 S/N MM15391DD064104.; [06] FABRICATED -1 DOUBLER FROM 2024T3#.080' CLAD LOT# 1447577-1; -2 STIFFENERS (7EA) FROM BAC1505-100052 7075-T6511 EXTRUSION LOT# 1456866-1 AND -3 WEB FROM 2024T3# .063'CLAD LOT#1446328-1.

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