Service difficulty report · Floorbeam · Boeing 7378H4

Difficulty date
June 29, 2024
Submitted
July 26, 2024
Operation
Air carrier
Aircraft
N8697C
Make and model
Boeing 7378H4
Aircraft serial
36728
Aircraft time
26,284 hours, 12,972 cycles
Part
Floorbeam
Condition
Corroded
Location
Zone 200
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

PASSENGER CABIN FLOOR BEAM BS947 RBL28 HAS SURFACE CORROSION ON TOP SIDE .<[01] REMOVED CORROSION. ORIGINAL THICKNESS OF 0.180IN; REMOVED 0.052IN MATERIAL; REMAINING 0.128IN; FOUND TO BE OUT OF LIMITS PER SRM 53-70-51-1A-1..;[02] ENTIRE LENGTH OF FLOOR BEAM UPPER FLANGE FROM LBL 60 - RBL 60 TO BE REMOVED AND REPAIRED PER SRM 53-70-51-2R-5; ALTERNATIVE 1 ON FAULT #TTG8Q00U9S43.;[03] LOCATED; MATCH DRILLED AND DEBURRED NEW FLOOR BEAM PER SRM 51-10-02.;[04] 01 - REMOVED AND REPLACED PER [REFERENCE] 51-10-02 OK TO INSTALL NEW FLOOR BEAM.;[05] INSTALLED FLOOR BEAM STA.947; LBL 60-RBL 60. PER SRM 51-10-02;[06] REMOVED AND REPLACED FLOOR BEAM STA. 947 LBL 60- RBL 60 PER SRM 51-10-02. ALSO; REFERENCE TASK (TTG8Q00U9S43);[07] RII INSPECTED AS REQUIRED. CORRECTIVE ACTION #5. REMOVE AND REPLACE OF STA. 947 FLOOR BEAM. REF.#TTG8Q00U9S43 FOR ALL WORK ACCOMPLISHED.

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