Service difficulty report · Stiffener · Boeing 7377BD

Difficulty date
January 28, 2022
Submitted
February 21, 2022
Operation
Air carrier
Aircraft
N7743B
Make and model
Boeing 7377BD
Aircraft serial
36718
Aircraft time
44,180 hours, 22,677 cycles
Part
Stiffener
Condition
Cracked
Location
R/H Horiz. Stab.
Stage of operation
UK
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

RIGHT HORIZONTAL STABILIZER STA.129.50 RIB 5 STIFFENER # 3 HAS A CRACK AT LOWER RADIUS. / [01] CUT AND REMOVED THE DAMAGE FROM THE VERTICAL STIFFENER #3OF THE. RIB #5 AS PER B 737 -700 SRM 55-10-09-2R-4 REPAIR 4[13] INSTALLED REPAIR AT RH HORIZONTAL STABILIZER RIB #5 STIFFENER #3 AS PER B 737-700 SRM 55-10-09-2R-4 REPAIR 4 ; 51-40-02-0G-0;[14] ACCOMPLISHED REPAIR ON RIB #5 STIFFENER 3 AT R/H HORIZONTAL STABILIZER STA 129.50 AS PER REF B737-700 SRM 55-10-09-2R-4 REPAIR 4. FOR RIB INSTALLATION REFER TO FAULT TTG8Q00AK47M;[15] VERIFIED STEP # 13;[16] VERIFIED STEP 14;[17] VERIFIED FINAL

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