Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
September 14, 2020
Submitted
October 5, 2020
Operation
Air carrier
Aircraft
N443WN
Make and model
Boeing 7377H4
Aircraft serial
29838
Aircraft time
58,994 hours, 34,632 cycles
Part
Stiffener
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

LT HORIZONTAL STABILIZER HAS 2 EA CRACKS ON NR 4 INSPAR RIB (STAB STA 120.3) ON 3RD AND 4TH VERTICAL STIFFENERS. VERIFIED VIA HFEC NDT PART 6; 51-00-00 PROCEDURE 23. REMOVED AND REPLACED LT HORIZONTAL STAB NR 4 INSPAR RIB(STAB STA 120.3) STIFFENER, PER SRM 51-40-02 AND SRM 55-10-09-2R-4.

More about the Boeing 737-7H4