Service difficulty report · Rib · Boeing 737

Difficulty date
February 17, 2022
Submitted
March 28, 2022
Operation
Air carrier
Aircraft
N945WN
Make and model
Boeing 737
Aircraft serial
36660
Aircraft time
39,297 hours, 23,820 cycles
Part
Rib
Condition
Cracked
Location
Lh Hor 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 INDICATION FOUND ON LH HORIZONTAL STABILIZER LOWER IN-SPAR SKIN AT STATION 193.90 RIB; 16.500 INCH FROM FRONT SPAR; INBD SIDE OF RIB. CRACK LENGTH IS 1.000 INCH 2022-98429 / [01] TOOL P/N: NORTEC 500D; S/N: N500X1693P030457; CAL DUE: 02-JUN-22.;[02] PERFORMED REPAIR ON LOWER INSPAR SKIN BETWEEN STAB. STA 187.70 TO STAB. STA 203.10; 16.5 INCH FROM FRONT SPAR LT HORIZONTAL STABILIZER IAW SRM B737-700 55-10-01-2R-11 THIS REPAIR IS CATEGORY B SEE FOLLOW ON TASKS REQUIREMENT. SEE INDIVIDUAL SIGN OFFS BELOW.;[03] PERFORMED REPAIR ON LOWER INSPAR SKIN BETWEEN STAB. STA 187.70 TO STAB. STA 203.10; 16.5 INCH FROM FRONT SPAR LT HORIZONTAL STABILIZER IAW SRM B737-700 55-10-01-2R-11 THIS REPAIR IS CATEGORY B SEE FOLLOW ON TASKS REQUIREMENT. SEE INDIVIDUAL SIGN OFFS BELOW.