Service difficulty report · Skin · Boeing 73771B

Difficulty date
September 14, 2024
Submitted
October 23, 2024
Operation
Air carrier
Aircraft
N7854B
Make and model
Boeing 73771B
Aircraft serial
29372
Aircraft time
51,205 hours, 33,957 cycles
Part
Skin
Condition
Cracked
Location
Zone 300
Stage of operation
IN
How discovered
V
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 = 0.900 INCH. APPROX. 2024-572755<[01] TOOL USED ON STEP 7 AND 8 ET EQUIPMENT: P/N: NORTEC 600D; S/N: 220272512; CAL DUE DATE: 08-JAN-25;[02] PERFORMED REPAIR ON LH HORIZONTAL STABILIZER LOWER SKIN LOCATED BTW STAB STA 184.70 RIB TO STAB STA 203.10 RIB AND BTW 13 INCH. FROM FRONT SPAR TO 23 INCH. FROM FRONT SPAR IAW B737-700 SRM 55-10-01-2R-11 REPAIR 11; FIGURE 204; DETAIL B; SHEET 2. SEE INDIVIDUAL SIGN OFF BELOW.;[03] PERFORMED REPAIR ON LH HORIZONTAL STABILIZER LOWER SKIN LOCATED BTW STAB STA 184.70 RIB TO STAB STA 203.10 RIB AND BTW 13 INCH. FROM FRONT SPAR TO 23 INCH. FROM FRONT SPAR IAW B737-700 SRM 55-10-01-2R-11 REPAIR 11; FIGURE 204; DETAIL B; SHEET 2. SEE INDIVIDUAL SIGN OFF BELOW.<BR>CERTIFIED AS RII

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