Service difficulty report · Rib · Boeing 7378H4

Difficulty date
September 29, 2023
Submitted
October 18, 2023
Operation
Air carrier
Aircraft
N8551Q
Make and model
Boeing 7378H4
Aircraft serial
36951
Aircraft time
19,763 hours, 9,809 cycles
Part
Rib
Part number
UNKNOWN
Condition
Cracked
Location
Zn 600 Right Win
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

RH WING INBD UPPER L/E THE 6TH FASTENER FWD OF FRONT SPAR HAS A CRACK INDICATION IN THE LOWER SUPPORT RIB AREA MARKED<[01] REMOVED SUPPORT RIB FOR REPLACEMENT. LOCATED AND DRILLED NEW SERVICEABLE SUPPORT RIB PER SRM 51-40-05.;[02] 1. RICHARD BLACKBURN (TECHNICIAN); 30-SEP-2023 05:31 UTC<BR>REMOVED SUPPORT RIB FOR REPLACEMENT. LOCATED AND DRILLED NEW SERVICEABLE SUPPORT RIB PER SRM 51-40-05.<BR>C/W INSPECTION.;[03] OK TO INSTALL.;[04] REMOVED AND REPLACED RH WING UPPER L/E OUTBOARD UPPER SUPPORT RIB PER SRM 51-40-02 AND SRM 57-41-01-2R-7.;[05] 4. RICHARD BLACKBURN (TECHNICIAN); 30-SEP-2023 08:43 UTC<BR>REMOVED AND REPLACED RH WING UPPER L/E OUTBOARD UPPER SUPPORT RIB PER SRM 51-40-02 AND SRM 57-41-01-2R-7.<BR>C/W INSPECTION.

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