Service difficulty report · Floor Panel · Boeing 7378H4

Difficulty date
February 6, 2023
Submitted
March 10, 2023
Operation
Air carrier
Aircraft
N8524Z
Make and model
Boeing 7378H4
Aircraft serial
36970
Aircraft time
20,203 hours, 9,817 cycles
Part
Floor Panel
Condition
Broken
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

CABIN FLOOR PANEL 221BF IS BROKEN AT TAB.<[01] IDENTIFIED PANEL MATERIAL IAW SRM 53-00-50-0I-1 FIG 2 TABLE 2.<BR><BR>FOUND DAMAGE AT 2EA LOCATIONS ON PANEL; AREA #1 AT AFT O/B CORNER ON LOWER SURFACE WHERE TAB IS BROKEN; AREA #2 IS 14.5' FROM FWD AND 10' FROM O/B EDGE. DAMAGE NOTED IS OUT OF ALLOWABLE DAMAGE LIMITS IAW SRM 53-00-50-1A-1 PARA 4B.<BR><BR>DAMAGE NOTED IS TO BE REPAIRED PER SRM 53-00-50-2R-1.<BR><BR>REMOVED 2EA THROUGH INSERTS TO FACILITATE REPAIR IAW SRM 53-00-50-2R-1 PARA 3B.<BR><BR>REMOVED ALL DAMAGE NOTED TO 1' DIAMETER AND CLEANED AREAS; OK TO POT EXPOSED CORE IAW SRM 53-00-50-2R-1 PARA 3A-F.;[02] VALIDATED APPLICABILITY OF SRM 53-00-50-2R-1.;[03] INSPECTED AND VERIFIED CORRECTIVE ACTIONS 1 AND 2.<BR><BR>VERIFIED MEASUREMENTS TABLE.;[04] APPLIED POTTING COMPOUND BMS5-28 TYPE 19 LOT#AK2JP8366K TO EXPOSED CORE AND CURED USING HEAT LAMP AND THERMOMETER ATS2208 CAL DUE DATE 10/2023 IAW SRM 53-00-50-2R-1 PARA 3G-H.;[05] SANDED POTTING COMPOUND TO CONTOUR AT (2 EA.) LOCATIONS AND FABRICATED REPAIR PLIES FROM BMS 9-3 TY H2 LOT#1513216-1 IAW SRM 53-00-50-2R-1. PARA 3. J.- K. (1).;[06] OK TO INSTALL REPAIR PLIES;[07] VERIFIED CORRECTIVE ACTIONS 4-6<BR><BR>OK TO INSTALL REPAIR PLIES;[08] INSTALLED REPAIR PLIES USING BMS8-201 TYPE 3 LOT#AK2EP8210K; VACUUM BAGGED; CHECKED FOR LEAKS; LEAK CHECKED GOOD USING VACUUM GAUGE ATS2107 CAL DUE DATE 04/2023 AND SET FOR CURE IAW SRM 53-00-50-2R-1 PARA 3K(1)-M(1).

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