Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
June 22, 2021
Submitted
August 4, 2021
Operation
Air carrier
Aircraft
N417WN
Make and model
Boeing 7377H4
Aircraft serial
29822
Aircraft time
65,751 hours, 38,956 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

RIGHT HORIZONTAL STABILIZER; #8 RIB #3 STIFFENER CRACKED NOTED AT LOWER AREA. ; / [01] CUT AND REMOVED DAMAGE SECTION OF STIFFENER AND WEB AT RT HORZ STAB RIB#8 STIFFENER #3 PER B737 SRM 55-10-09-2R-4; [07] DRILLED REPAIR PARTS KIT #55100003-01 IAW. B737-700 SRM 51-40-05-0G-0; [08] RII VERIFIED 7.; [09] ADDING REF TO STEP NO 7: SRM 55-10-09-2R-4 REPAIR 4 FIGURE 202 SHEET 1; [10] TREATED AND PRIMED REPAIR PART AND STIFFENER #3 CUT OUT IAW. B-737-700 AMM 51-21-72-370-804; [11] VERIFIED 9; 10. OK TO INSTALL REPAIR. RII; [12] INSTALLED REPAIR PARTS AT RT HORZ STAB #8 RIB STIFFENER #3 PER REF B737 SRM 55-10-09-2R-4; [13] PARTS.; [14] CUT AND REMOVED DAMAGE SECTION OF STIFFENER AND WEB AT RT HORZ STAB RIB#8 STIFFENER #3 PER B737 SRM 55-10-09-2R-4;DRILLED REPAIR PARTS KIT #55100003-01 IAW. B737-700 SRM 51-40-05-0G-0; INSTALLED REPAIR PARTS AT RT HORZ STAB #8 RIB STIFFENER #3 PER REF B737 SRM 55-10-09-2R-4.

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