Service difficulty report · Floorbeam · Boeing 7378

Difficulty date
July 14, 2026
Submitted
September 3, 2026
Operation
Air carrier
Aircraft
N8706W
Make and model
Boeing 7378
Aircraft serial
42559
Aircraft time
22,122 hours, 10,105 cycles
Part
Floorbeam
Condition
Corroded
Location
Zone 100
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

STA 947 FLOOR BEAM HAS PITTING AND CORROSION AT LBL 51 REMOVED CORROSION ON STA.947 FLOOR BEAM UPPER CHORD AT LBL 51 MEASURED CORROSION REMOVAL TO BE 0.055" DEEP REMAINING THICKNESS IS 0.125" (ORIGINAL THICKNESS IS 0.180") FLOOR BEAM UPPER CHORD IS OUT OF LIMITS PER SRM 53-70-51-1A-1. REPAIRED I.A.W SRM 53-70-51-2R-5 AND EA 26-153-01965. REF (TTG8Q01D6ER9) FOR ALL SIGN OFFS. DEVIATIONS ACCOMPLISHED PER EA-26-153-01965 (TTG8Q01DMMLE). WIP1 (TTG8Q01DHP6X) WIP2 (TTG8Q01DK3B6).

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