Service difficulty report · Rib · Boeing 7377H4

Difficulty date
July 2, 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
Lt 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

LEFT HORIZONTAL STAB STA 120.30; INSPAR RIB ASSY 4 IS CRACKED AT FWD LOWER WEB AREA. ACCOMPLISHED REPAIR AT LEFT HORIZONTAL STAB STA 12.30; INSPAR RIB ASSY 4 AT FWD LOWER WEB AREA IAW RES 2016044-5 REV IR AND EA 20-155-00991 REV IR REF NRC W156198 AND EA 20-155-00989.

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