Service difficulty report · Mount · Boeing 7378H4

Difficulty date
November 18, 2024
Submitted
December 13, 2024
Operation
Air carrier
Aircraft
N8523W
Make and model
Boeing 7378H4
Aircraft serial
36969
Aircraft time
26,231 hours, 13,036 cycles
Part
Mount
Condition
Corroded
Location
Zone 200
Stage of operation
IN
How discovered
V
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

AT STATION 947 RBL 51 THERE IS EVIDENCE OF CORROSION ON THE FWD SIDE OF THE FRAME AT THE LAVATORY MOUNT. BLENDED CORROSION ON THE FWD FLANGE OF THE UPPER CHORD ON FLOORBEAM STA. 947 PER SRM 51-10-02. REMOVED .039' OF MATERIAL. REMAINING THICKNESS IS .141'. DAMAGE REMOVAL IS OUT OF LIMITS PER SRM 53-70-51-1A-1. REMOVED DAMAGED ON TOP SIDE OF UPPER FLANGE OF FLOORBEAM 947.5 FROM RBL 49.5 TO RBL 51; IAW SRM 53-70-51-2R-8 ALTERNATIVE 3. REMOVED DAMAGED ON TOP SIDE OF UPPER FLANGE OF FLOORBEAM 947.5 FROM RBL 49.5 TO RBL 51; IAW SRM 53-70-51-2R-8 ALTERNATIVE 3. REMOVED AN ADDITIONAL 0.002 INCH OF MATERIAL IN BLENDED AREA AND FLAP PEENED THE BLENDED AREA ALL IAW SRM 53-70-51-2R-8 ALTERNATIVES 3.;[07] 6. REMOVED AN ADDITIONAL 0.002 INCH OF MATERIAL IN BLENDED AREA AND FLAP PEENED THE BLENDED AREA ALL IAW SRM 53-70-51-2R-8 ALTERNATIVES 3. INSPECTED.;[08] RII: FABRICATED SHIM PER SRM 53-70-51-2R-8 ALTERNATIVE 3.;[09] VERIFIED WORK IN C/A #8; FABRICATED SHIM PER SRM 53-70-51-2R-8 ALTERNATIVE 3. (RII);[10] ALODINED AND PRIMED REPAIR PART AND REWORK AREA PER SRM 51-20-01; AND SOPM 20-41-0INSTALLED REPAIR PARTS PER SRM 53-70-51-2R-8; ALTERNATIVE 3.

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