Service difficulty report · Rib · Boeing 7377Q8

Difficulty date
December 29, 2025
Submitted
January 20, 2026
Operation
Air carrier
Aircraft
N7877H
Make and model
Boeing 7377Q8
Aircraft serial
29359
Aircraft time
61,487 hours, 34,080 cycles
Part
Rib
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 INSPAR RIB LOC FWD UPPER CHORD STAB 120.30 AND 1IN FROM FRONT SPAR HSS 120.30 AT RT HORIZONTAL STAB. REPAIRED INSPAR RIB LOC FWD UPPER CHORD STAB 120.30 AND 1IN FROM FRONT SPAR STAB 120.30 AT RT HORIZONTAL STAB IAW EA 26-155-00100-WIP1.

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