Service difficulty report · Mount · Boeing 7378H4

Difficulty date
May 5, 2024
Submitted
May 31, 2024
Operation
Air carrier
Aircraft
N8693A
Make and model
Boeing 7378H4
Aircraft serial
36921
Aircraft time
26,036 hours, 12,784 cycles
Part
Mount
Part number
UNKNOWN
Condition
Corroded
Location
Bs 947
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

AFT L/H LAV; O/B AFT FLOOR MOUNT AT STA 947 HAS AREAS OF SURFACE CORROSION. REMOVED CORROSION IAW SRM 51-10-02. DAMAGE REMOVAL .041' OUT OF LIMITS PER SRM 53-70-51-1A-1 REMAINING THICKNESS ON 947.5 FLOORBEAM. REMOVED AFT L/H LAV; O/B AFT FLOOR MOUNT AT STA 947 IAW SRM 51-40-02. UPON FURTHER INSPECTION; FOUND AREA REPAIRABLE PER SRM 53-70-51-2R-8. ACCOMPLISHED BLENDOUT FOR SHIM PER SRM 53-70-51-2R-8. MAX MATERIAL REMAINING 0.136. MATERIAL REMOVAL IS WITHIN LIMITS PER SRM 53-70-51-2R-8. FLAP PEENED REMOVAL AREA PER SRM 53-70-51-2R-8 AND SOPM 20-10-03. FABRICATED, DRILLED, & DEBURRED 0.040. SHIM SRM 53-70-51-2R-8 ALTERNATIVE 3. FABRICATED, DRILLED, & DEBURRED 0.040? 7075-T6 SHIM PER SRM 53-70-51-2R-8 ALTERNATIVE 3. FABRICATED ON CA36 PER SRM 53-70-51-2R-8 ALTERNATIVE 3. INSTALLED REPAIR SHIM PER SRM 53-70-51-2R-8 ALTERNATIVE 3. REINSTALLED AFT L/H LAV, O/B AFT FLOOR MOUNT AT STA 947 IAW SRM 51-40-02. INSTALLED REPAIR SHIM PER SRM 53-70-51-2R-8 ALTERNATIVE 3. REINSTALLED AFT L/H LAV; O/B AFT FLOOR MOUNT AT STA 947 IAW SRM 51-40-02.

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