Service difficulty report · Rib · Boeing 7377H4

Difficulty date
November 7, 2022
Submitted
November 17, 2022
Operation
Air carrier
Aircraft
N269WN
Make and model
Boeing 7377H4
Aircraft serial
32526
Aircraft time
52,572 hours, 31,375 cycles
Part
Rib
Condition
Cracked
Location
Zn 300 Stabilize
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

FOUND CRACK ON RIGHT HORIZONTAL STAB RIB #1 ON FWD I/B LOWER CHORD / [01] PERFORMED ROTO INSP ON EXISTING HOLES IAW B737 NDT P6 51-00-00 PROC.16; NO CRACKS<BR>TOOL USED : NORTEC 600 B/C 166316 CALDUE: 10/23;[02] ACCOMPLISHED CUTOUT OF CRACKED SECTION ON RIGHT HORIZONTAL STAB INSPAR RIB # 1 FWD I/B LOWER CHORD REF SRM 55-10-09-2R-5. WORK WAS ACCOMPLISHED BY TECHNICIAN MAURICIO R CARRERA EMPL # 8399;;[06] FABRICATED REPAIR ANGLE (1EA) FROM 7075-O CLAD SHEET OF 0.063' THICK AND FILLER (1EA) FROM 7075-T6 CLAD SHEET OF 0.063' THICK REF SRM 55-10-09-2R-5; FIGURE 205;[08] ACCOMPLISHED HEAT TREATMENT ON FABRICATED REPAIR ANGLE REF. SRM 55-10-09-2R-5 AND BAC5602;[09] VERIFIED STEP 8;[11] LOCATED & DRILLED REPAIR PARTS AS PER SRM 55-10-09-2R-5; FIG.205.(WORK ACCOMPLISHED BY: A.V.#17856).;[12] TREATED & PRIMED REPAIR PARTS PER SRM 51-20-01 & AMM 51-21-72.(WORK ACCOMPLISHED BY: A.V. # 17856).;[16] MIXED SEALANT BMS5-95 B-2; ON 11/10/22 @ 11:10 AM; APPLIED TIME: @ 11:12AM. SQUEEZE TIME:11/10/22 @ 13:10.<BR>INSTALLED REPAIR PARTS AT RT HORZ. STAB. RIB #1 ON FWD. LWR. I/B CHORD; AS PER SRM 55-10-09-2R-5 REPAIR 5; FIG. 205; DETAIL:'B'.(INSTALLED VERT. FLANGE FASTENERS ONLY; HORZ. FLANGE FASTENERS WILL BE INSTALLED ON THE RIB INSTALLATION; CARD: TTG8Q00FUS9U).JOB ACCOMPLISHED BY: A.V. # 17856.;

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