Service difficulty report · Rib · Boeing 7377H4

Difficulty date
June 22, 2020
Submitted
July 14, 2020
Operation
Air carrier
Aircraft
N478WN
Make and model
Boeing 7377H4
Aircraft serial
33989
Aircraft time
55,249 hours, 32,699 cycles
Part
Rib
Condition
Cracked
Location
Rt Horiz Stab
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

RIGHT HORIZONTAL STAB; INSPAR RIB ASSY 4; STA 120.30; STIFFENER 3 IS CRACKED AT LOWER END. ACCOMPLISHED REPAIR AT RT HORIZONTAL STAB INSPAR RIB ASSY 4 STA 120.30 PER SRM 55-10-09-2R-4 FIG 202 DETAIL A (PERMANENT REPAIR).

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