Service difficulty report · Skin Panel · Boeing 73776N

Difficulty date
October 31, 2023
Submitted
December 7, 2023
Operation
Air carrier
Aircraft
N7846A
Make and model
Boeing 73776N
Aircraft serial
35218
Aircraft time
46,897 hours, 32,587 cycles
Part
Skin Panel
Part number
UNKNOWN
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

CRACK INDICATION FOUND ON LT HORIZONTAL STABILIZER LOWER SKIN PANEL. LOCATED AT STAB STA 193.9 RIB AND 16 INCH. FROM FRONT SPAR. INBOARD SIDE OF RIB. CRACK LENGTH = 0.700 INCH. APPROX. 2023-682004<[01] TOOL USED PN: NORTEC 600D; SN: 200048001; CAL DUE DATE: 01-MAY-24.;[02] REPAIRED LT HORIZONTAL STABILIZER LOWER SKIN PANEL. LOCATED AT STAB STA 193.9 RIB AND 16 INCH. FROM FRONT SPAR. INBOARD SIDE OF RIB. IAW B737-700 SRM 55-10-01-2R-11 REPAIR 11. SEE INDIVIDUAL SIGNOFF BELLOW;[03] CORRECTED STEP 2<BR>REPAIRED LT HORIZONTAL STABILIZER LOWER SKIN PANEL. LOCATED AT STAB STA 193.9 RIB AND 16 INCH. FROM FRONT SPAR. INBOARD SIDE OF RIB AND TOTAL AREA OF ALL REPAIR DOUBLER INSTALLED IS 95.59 IN2 TOOL USED CALIPER P/N: 500-752-20 S/N: B2038259; DUE DATE: 17-OCT-24. 22 . IAW B737-700 SRM 55-10-01-2R-11 REPAIR 11. SEE INDIVIDUAL SIGNOFF BELLOW;[04] REPAIRED LT HORIZONTAL STABILIZER LOWER SKIN PANEL. LOCATED AT STAB STA 193.9 RIB AND 16 INCH. FROM FRONT SPAR. INBOARD SIDE OF RIB AND TOTAL AREA OF ALL REPAIR DOUBLER INSTALLED IS 95.59 IN2 TOOL USED CALIPER P/N: 500-752-20 S/N: B2038259; DUE DATE: 17-OCT-24. 22 . IAW B737-700 SRM 55-10-01-2R-11 REPAIR 11. SEE INDIVIDUAL SIGN OFF BELOW<BR>RII ACCOMPLISHED

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