Service difficulty report · Beam · Boeing 7378H4

Difficulty date
October 13, 2022
Submitted
November 7, 2022
Operation
Air carrier
Aircraft
N8655D
Make and model
Boeing 7378H4
Aircraft serial
42529
Aircraft time
26,727 hours, 12,442 cycles
Part
Beam
Condition
Corroded
Location
Zn 100 Fus Lower
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 WET AREA; RH LAV. AFT MOUNT OUTBD; HAS CORROSION AROUND BASE. / [01] BLENDED CORRODED AREA PER SRM 51-10-02. DAMAGE REMOVAL FOUND TO BE OUT OF LIMITS PER SRM 53-70-51-1A-1. ORIGINAL PART THICKNESS = .180?; REMAINING THICKNESS AFTER BLEND OUT = .089?. CORRODED PART #147A5504-8.05] FLAP PEEN THE CUT EDGE OF THE STA-947 FLOOR BEAM FROM APPROXIMATELY RBL 9' TO RBL 59' PER SRM 53-70-51-2R-5;[06] VERIFIED FLAP PEEN ALONG CUT EDGE OF STA.947 FLOOR BEAM REPAIR;[07] OBTAINED PREFABRICATED T-CHORD FROM STORES MPN 53700002-001. LOCATED AND PILOTED VERTICAL FLANGE OF -1 REPLACEMENT T-CHORD PER SRM 53-70-51-2R-5; ALTERNATIVE 2. LOCATED AND PILOTED -2 REPAIR SPLICE ANGLES PER SRM 53-70-51-2R-5; ALTERNATIVE 2 AND EA 22-153-03130-WIP1 (TTG8Q00FKR7P).;[08] ACCOMPLISHED FLAP PEEN OF CUT EDGE OF PART [1] T-CHORD IAW SRM 53-70-51-2R-5 AND SOPM 20-10-03.;[09] INSPECTED FLAP PEEN OF CUT EDGE OF PART [1] T-CHORD;[10] FABRICATED REPAIR PARTS PER SRM 53-70-51-2R-5.14] TREATED AND PRIMED REPAIR PARTS PER SRM 53-70-51-2R-5. OK TO INSTALL REPAIR PARTS.;[[16] INSTALLED REPAIR PARTS PER SRM 53-70-51-2R-5; ALTERNATIVE 2.;[18] REPAIR ACCOMPLISHED IAW SRM 53-70-51-2R-5; ALTERNATIVE 2 AND EA 22-153-03130.;

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