Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
May 3, 2022
Submitted
June 9, 2022
Operation
Air carrier
Aircraft
N477WN
Make and model
Boeing 7377H4
Aircraft serial
33988
Aircraft time
60,414 hours, 35,826 cycles
Part
Floor Panel
Part number
241ZF
Condition
Pulled
Location
Cabin Floor
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

AFT PASSENGER CABIN FLOOR PANEL 241ZF UPPER SKIN HAS PULLED STRANDS NEAR AFT EDGE. (MARKED) / REMOVED AN APPROXIMATE 11X10.5' AREA OF UPPER SURFACE PLIES LOCATED AT THE AFT END OF THE PANEL AND CLEANED AREA WITH NO DISBOND OR CONTAMINATION NOTED; WORK PERFORMED IAW SRM 53-00-50-2R-1 PARAGRAPH 4.A AND C-F.;[02] PANEL IDENTIFIED IS 241ZF NOT 242UF.;[03] VALIDATED APPLICABILITY OF SRM 53-00-50-2R-1.;[04] INSPECTED AND VERIFIED CORRECTIVE ACTIONS 1; 2 AND 3. OKAY TO PROCEED PER SRM 53-00-50-2R-1.;[05] FABRICATED REPAIR PLIES FROM BMS 9-3 STYLE 7781 LOT NUMBER 1431838-1 IAW SRM 53-00-50-2R-1PARGRAPH 3.K.(1).(A). OK TO INSTALL REPAIR PLIES.;[06] INSPECTED AND VERIFIED CORRECTIVE ACTION 5. OKAY TO INSTALL REPAIR PLIES PER SRM 53-00-50-2R-1.;[07] INSTALLED PLIES WITH BMS 8-201 TYPE IV LOT NUMBER 1486957-3; VACUUM BAGGED PLIES; VERIFIED 5X5 AND SET PLIES TO CURE USING HOTBONDER ID: NCX000523 DUE: 06/22 IAW SRM 53-00-50-2R-1 PARAGRAPH 4.K.(1).(B-C);L.(1)-M(1).;[08] INSPECTED AND VERIFIED CORRECTIVE ACTION 7. 5X5 LEAK CHECK PASSED PER SRM 53-00-50-2R-1.;[09] CURED PLIES; UNBAGGED AND INSTALLED 14 INSERT USING RESIN BMS 5-107 CLASS1 LOT NUMBER AK0KP9324K; CURED RESIN UNDER HEAT LAMP USING THERMOMETER ID: ATS2209 DUE: 10/22 IAW SRM 53-00-50-2R-1 PARAGRAPH 3.M.(1) AND N.;[10] IN ITEM 1; PARAGRAPH LISTED SHOULD BE 3 NOT 4.;[11] IN ITEM 7; PARAGRAPH LISTED SHOULD BE 3 NOT 4.

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