Service difficulty report · Rib · Boeing 7377H4

Difficulty date
February 26, 2023
Submitted
March 20, 2023
Operation
Air carrier
Aircraft
N278WN
Make and model
Boeing 7377H4
Aircraft serial
36441
Aircraft time
52,434 hours, 31,459 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

CRACK ON INSPAR RIB 120.30 LOWER CHORD AT 7 INCHES FROM FRONT SPAR AT LT HORIZONTAL STABILIZER. 2023-127697<[01] ET TOOL USED: PN: MIZ-21C ; SN: 769680; DUE DATE: 07-JUL-23;[02] TOOLS USED: TEMPERATURE CONTROLLER P/N: P3015GOES00000; S/N: 112031023; DUE DATE: 01-FEB-24; TEMPERATURE CONTROLLER P/N: P3015GOES00000; S/N: 112820025; DUE DATE: 01-FEB-24.;[03] PERFORMED PERMANENT REPAIR LOCATED INSPAR RIB 120.30 LOWER CHORD AT 7 INCHES FROM FRONT SPAR AT LT HORIZONTAL STABILIZER IAW B737-700 SRM 55-10-09-2R-5. REPAIR 5. THIS REPAIR IS CATEGORY A AND NOT FURTHER ACTION REQUIRED. SEE INDIVIDUAL SIGN OFF BELOW.;[04] PERFORMED PERMANENT REPAIR LOCATED INSPAR RIB 120.30 LOWER CHORD AT 7 INCHES FROM FRONT SPAR AT LT HORIZONTAL STABILIZER IAW B737-700 SRM 55-10-09-2R-5. REPAIR 5. THIS REPAIR IS CATEGORY A AND NOT FURTHER ACTION REQUIRED. RII;SEE INDIVIDUAL SIGN OFF BELOW.

More about the Boeing 737-7H4