Service difficulty report · Skin · Boeing 73779P

Difficulty date
February 9, 2023
Submitted
March 23, 2023
Operation
Air carrier
Aircraft
N7857B
Make and model
Boeing 73779P
Aircraft serial
29358
Aircraft time
53,322 hours, 35,875 cycles
Part
Skin
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 = 0.600 INCH. APPROX. 2023-116679<[01] TOOL USED PN:NORTEC 600D;PN:200053402;DUE DATE:13-MAY-23;[02] REPAIRED LT HORIZONTAL STABILIZER LOWER SKIN PANEL. LOCATED BTW STAB STA184.70 TO STAB STA 203.10 AND BTW 12 INCH. FROM FRONT SPAR TO 23 INCH. FROM FRONT SPAR IAW SRM B737-700 55-10-01-2R-11 REPAIR 11; FIGURE 204; DETAIL B SEE INDIVIDUAL SIGN OFFS BELLOW;[03] REPAIRED LT HORIZONTAL STABILIZER LOWER SKIN PANEL. LOCATED BTW STAB STA184.70 TO STAB STA 203.10 AND BTW 12 INCH. FROM FRONT SPAR TO 23 INCH. FROM FRONT SPAR IAW SRM B737-700 55-10-01-2R-11 REPAIR 11; FIGURE 204; DETAIL B SEE INDIVIDUAL SIGN OFFS BELLOW<BR>CERTIFIED AS RII

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