Service difficulty report · Floor Panel · Boeing 7378H4

Difficulty date
March 27, 2023
Submitted
April 26, 2023
Operation
Air carrier
Aircraft
N8529Z
Make and model
Boeing 7378H4
Aircraft serial
36974
Aircraft time
19,992 hours, 9,666 cycles
Part
Floor Panel
Condition
Broken
Location
Zn 200 Fus Top
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

FWD CABIN FLOOR BOARD PANEL 221BF O/B AFT TANG IS BROKEN.<FOUND BROKEN TANG TO BE OUT OF ALLOWABLE DAMAGE LIMITS IAW SRM 53-00-50-0I-1 PARA 4B.REMOVED DAMAGED TANG AT O/B AFT CORNER AND CLEANED AREA IAW SRM 53-00-50-2R-6 PARA 3C-E. FABRICATED CORE PLUG FROM BMS8-124 CL4 T5 GR5.0 LOT# 1283769 IAW SRM 53-00-50-2R-6 PARAGRAPH 3.G FABRICATED UPPER SURFACE REPAIR PLIES FROM BMS9-3H2ST1581 LOT#1520142-1; INSTALLED CORE PLUG USING BMS5-28 TYPE 19 LOT#AK2LP8414K AND UPPER SURFACE 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 USING HEAT LAMP AND THERMOMETER ATS2209 CAL DUE DATE 10/2023 IAW SRM 53-00-50-2R-6 PARA F-G(1)-H(1)-I(1). CURED REPAIR USING HEAT LAMP AND THERMOMETER ATS2209 CAL DUE DATE 10/2023; UNBAGGED; SANDED CORE PLUG FLUSH WITH LOWER SURFACE; FABRICATED LOWER SURFACE REPAIR PLIES USING 9-3H2ST1581 LOT#1520142-1; OK TO INSTALL IAW SRM 53-00-50-2R-6 PARA 3J-K(1) INSTALLED LOWER SURFACE 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 IAW SRM 53-00-50-2R-6 PARA 3K(1)-L(1).] CURED LOWER SURFACE PLIES USING THERMOMETER ID: ATS2209 CAL DUE: 10/2023. REMOVED VACUUM BAG AND TRIMMED EDGES OF REPAIR IAW SRM 53-00-50-2R-6 PARAGRAPH 3.M(1) FWD CABIN FLOOR BOARD PANEL 221BF WITH A BROKEN O/B AFT TANG WAS REPAIRED IAW SRM 53-00-50-2R-6.

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