Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
February 13, 2023
Submitted
March 13, 2023
Operation
Air carrier
Aircraft
N289CT
Make and model
Boeing 7377H4
Aircraft serial
36633
Aircraft time
50,940 hours, 30,659 cycles
Part
Floor Panel
Condition
Delaminated
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

AFT CABIN FLOOR PANEL 242UF HAS A DELAMINATION ON THE LOWER SKIN AFT EDGE AT GIRT BAR ATTACH POINT<[01] IDENTIFIED PANEL 242UF MATERIAL IAW SRM 53-00-50-0I-1 FIG 6; TABLE 6.<BR><BR>FOUND DAMAGE TO BE BEYOND ALLOWABLE LIMITS IAW SRM 53-00-50-1A-1 PARA 4. F. <BR><BR>REPAIR TO BE ACCOMPLISHED IAW SRM 53-00-50-2R-1. <BR><BR>CLEANED PANEL IAW SRM 53-00-50-2R-0 PARA 5. A. (1). <BR><BR>REMOVED DAMAGED PLIES ON LOWER SKIN AFT EDGE AT GIRT BAR ATTACH POINT WITH NO MOISTURE; CONTAMINATION OR DAMAGED CORE NOTED. <BR><BR>INSERTS NEAR REPAIR WERE REMOVED ON TTG8Q00HST79.<BR><BR>ALL IAW SRM 53-00-50-2R-1 PARA 3. A. - F. <BR><BR>O.K. TO POT.;[02] VALIDATED REPAIR PER SRM 53-00-50-2R-1;[03] VERIFIED ITEMS 1;2 CORRECTIVE ACTIONS. <BR>OK TO POT.;[04] APPLIED POTTING BMS5-28 TYPE 19 LOT#AK2JP8366K AND CURED USING HEAT LAMP AND THERMOMETER ATS2208 CAL DUE DATE 10/2023; SANDED POTTING SMOOTH; CLEANED REPAIR AREA AND FABRICATED REPAIR PLIES FROM BMS9-3H2ST1581 LOT#1495277-1; OK TO INSTALL IAW SRM 53-00-50-2R-1 PARA 3G-K(1);[05] INSPECTED AND VERIFIED CORRECTIVE ACTION 4. OKAY TO INSTALL REPAIR PLIES.<BR><BR>VERIFIED MEASUREMENTS TABLE.;[06] INSTALLED REPAIR PLIES USING BMS8-201 LOT#AK2EP8210K; VACUUM BAGGED; CHECKED FOR LEAKS; LEAK CHECKED GOOD USING VACUUM GAUGE ATS2107 CAL DUE DATE 04/2023 IAW SRM 53-00-50-2R-1 PARA 3K(1)-L(1)

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