Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
August 2, 2021
Submitted
September 15, 2021
Operation
Air carrier
Aircraft
N447WN
Make and model
Boeing 7377H4
Aircraft serial
33720
Aircraft time
58,733 hours, 34,620 cycles
Part
Floor Panel
Condition
Delaminated
Location
Cabin
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

MULTIPLE AREAS OF DELMINATION AND DAMAGE ON LOWER SURFACE OF CABIN FLOOR PANEL 222BF ; / [01] IDENTIFIED PANEL 222BF IAW SRM 53-00-50-0I-1 FIG 2; TABLE 2.<BR><BR>FOUND DAMAGE TO BE BEYOND ALLOWABLE LIMITS IAW SRM 53-00-50-1A-1 PARA 4.A. <BR><BR>REPAIR TO BE ACCOMPLISHED IAW SRM 53-00-50-2R-1. <BR><BR><BR>CLEANED PANEL IAW SRM 53-00-50-2R-0 PARA 5. A. (1).<BR><BR>REMOVED (2EA) DRAIN FITTING ASSEMBLIES TO FACILITATE REPAIR IAW SRM 53-00-50-2R-1 PARA 3.B AND DRAWING 141A5810-464. WILL REQUIRE REINSTALLATION UPON REPAIR COMPLETION. <BR><BR>REMOVED DAMAGE ON LOWER SKIN AT (4) EACH LOCATIONS ALONG LOWER OB EDGE AND CLEANED IAW SRM 53-00-50-2R-1 PARA 3A & 3C - 3.F WITH NO CONTAMINATION NOTED. OK TO POT OPEN CORE AREAS.; [02] VALIDATED APPLICABILITY OF REPAIR TO FLOOR PANEL 222BF TO BE COMPLETED IAW SRM 53-00-50-2R-1; [03] VERIFIED CORRECTIVE ACTIONS 1 AND 2 PER SRM 53-00-50-0I-1; SRM 53-00-50-1A-1; SRM 53-00-50-2R-1; AND SRM 53-00-50-2R-0 <BR>VALIDATED REPAIR PER SRM 53-00-50-2R-1<BR>OK TO POT.; [04] APPLIED POTTING COMPOUND BMS 5-28 TY19 LOT # AK0DP4131K TO OPEN CORE AREAS. SET TO CURE USING HEAT LAMP AND THERMOMETER ID: ATS2209 S/N: 43300739WS ALL IAW SRM 53-00-50-2R-1 PARA 3.G.-H.; [05] REMOVED 1EA THROUGH INSERT FACILITATE MAINTENANCE IAW SRM 53-00-50-2R-1.PARA 3.B.<BR>CURED POTTING COMPOUND; SANDED TO CONTOUR. FABRICATED REPAIR PLIES FROM BMS9-3 TY H2 LOT#1458851-1 IAW SRM 53-00-50-2R-1.PARA 3.H-K.(1)

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