Service difficulty report · Rib · Boeing 7377H4

Difficulty date
May 26, 2021
Submitted
July 1, 2021
Operation
Air carrier
Aircraft
N942WN
Make and model
Boeing 7377H4
Aircraft serial
36648
Aircraft time
39,538 hours, 23,971 cycles
Part
Rib
Condition
Cracked
Location
Horizontal Stab
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 INSPAR RIB LOCATED STAB STA 129.50 AND 18 INCH FROM FRONT SPAR AT RT HORIZONTAL STABILIZER. EVALUATED INSPAR RIB LOCATED STAB STA 129.50 AND 18 INCH FROM FRONT SPAR AT RT HORIZONTAL STABILIZER AND CRACK NOT IS PERMITTED IAW SRM 55-10-09-1A-1 ALLOWABLE DAMAGE 1 PARAGRAPH 4.A(1). REPAIRED INSPAR RIB 129.50 RT HORIZONTAL STABILIZER IAW B737-700 SRM 55-10-09-2R-4 REPAIR 4.

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