Service difficulty report · Rib · Boeing 73779P

Difficulty date
December 18, 2024
Submitted
January 23, 2025
Operation
Air carrier
Aircraft
N7855A
Make and model
Boeing 73779P
Aircraft serial
29357
Aircraft time
58,892 hours, 38,173 cycles
Part
Rib
Condition
Cracked
Location
Zone 300
Stage of operation
IN
How discovered
E
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 INSPAR RIB LOCATED STAB STA 129.50 AND 28 INCH FROM FRONT SPAR LT HORIZONTAL STAB 2024-766225<[01] ON STEP 3 AND 4. TOOL USED: ET INSTRUMENT. P/N: NORTEC 600D. S/N: 240525411. DUE DATE: 13-NOV-25.;[02] TOOL USED P/N: NORTEC 500D; S/N: N500X1693P030456; CAL DUE: 14-APR-25.;[03] PERFORMED REPAIR CAT A LOCATED ON INSPAR RIB LOCATED STAB STA 129.50 AND 28 INCH FROM FRONT SPAR LT HORIZONTAL STAB IAW B737-700 SRM 55-10-09-2R-5 REPAIR 5<BR>SEE INDIVIDUAL SIGN OFF BELOW;[04] CORRECTIVE STEP 3<BR>PERFORMED REPAIR CAT A LOCATED ON INSPAR RIB LOCATED STAB STA 129.50 AND 28 INCH FROM FRONT SPAR LT HORIZONTAL STAB IAW B737-700 SRM 55-10-09-2R-4 REPAIR 4<BR>SEE INDIVIDUAL SIGN OFF BELOW;[05] PERFORMED REPAIR CAT A LOCATED ON INSPAR RIB LOCATED STAB STA 129.50 AND 28 INCH FROM FRONT SPAR LT HORIZONTAL STAB IAW B737-700 SRM 55-10-09-2R-4 REPAIR 4<BR>RII ITEM<BR>SEE INDIVIDUAL SIGN OFF BELOW

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