Service difficulty report · Rib · Boeing 7377L9

Difficulty date
November 19, 2021
Submitted
January 10, 2022
Operation
Air carrier
Aircraft
N7817J
Make and model
Boeing 7377L9
Aircraft serial
28013
Aircraft time
55,382 hours, 27,558 cycles
Part
Rib
Condition
Cracked
Location
Horizontal Stab
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

LEFT HAND HORIZONTAL STABILIZER INSPAR RIB; AT STABILIZER STATION 129.50; 3RD VERTICAL STIFFENER IS CRACKED. ; / [01] CUT AND REMOVED CRACK DAMAGE LEFT HAND HORIZONTAL STABILIZER INSPAR RIB AT STABILIZER STATION 129.50; 3RD VERTICAL STIFFENER L=0.55IN X W=0.35IN IAW SRM 55-10-09-2R-4 STEP 4.B.[10] FABRICATED REPAIR PARTS; T-SECTION 7075-T76511 0.063IN THICK LOT # 1463116-1; ANGLE BAC 1490 7075-T62 0.063IN THICK LOT # 1464923-1; AND SHIM 2 (E.A) 7075-T6 0.016IN THICK LOT # 1439717-1 IAW SRM 55-10-09-2R-4 STEP 4.F - J.; [11] APPLIED CHEMICAL CONVERSION COATING TO REPAIR PARTS; BARE SURFACES AND CUT EDGES OF THE RIB IAW SRM 55-10-09-2R-4 STEP 4.K.; [12] VERIFIED CORRECTIVE ACTION ENTRIES 9.; 10. AND 11.<BR><BR>OK TO PRIME REPAIR PARTS; [13] APPLIED PRIMER TO REPAIR PARTS; BARE SURFACES AND CUT EDGES OF THE RIB IAW SRM 55-10-09-2R-4 STEP 4.L. OK TO INSTALL.; [14] VERIFIED CORRECTIVE ACTION ENTRY 13.<BR><BR>OK TO INSTALL REPAIR PARTS; [15] INSTALLED AND FILLET SEALED REPAIR PARTS IAW SRM 55-10-09-2R-4 STEP 4.M - Q.; [16] VERIFIED CORRECTIVE ACTION ENTRY 15.

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