Service difficulty report · Floorbeam · Boeing 7378H4

Difficulty date
June 29, 2024
Submitted
July 29, 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 RBL50 UNDER AND AROUND LAV TIE DOWN FITTING HAS POSSIBLE CORROSION.<[01] REMOVED LAV TIE DOWN FITTING FROM STA 947 RBL 50 PER SRM 51-40-02;[02] REMOVED CORROSION. ORIGINAL THICKNESS OF 0.180IN; REMOVED 0.075IN MATERIAL; REMAINING THICKNESS IS 0.105IN. OUT OF LIMITS PER SRM 53-70-51-1A-1.;[03] 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.;[04] 01 - REMOVED AND REPLACED 947 FLOOR BEAM SEE TASK CARD TTG8Q00U9S5C.;[05] VERIFIED

More about the Boeing 737-8H4