Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
January 5, 2021
Submitted
January 28, 2021
Operation
Air carrier
Aircraft
N406WN
Make and model
Boeing 7377H4
Aircraft serial
27894
Aircraft time
66,898 hours, 39,718 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

CRACK INSPAR RIB STAB STA 129.50 RIB 5 STIFFENER 3 TO 26.750 INCHES FROM FRONT SPAR LT HORIZONTAL STAB / REPAIRED INSPAR RIB STAB STA 129.50 RIB 5 STIFFENER 3 TO 26.75 INCHES. FROM FRONT SPAR LT HORIZONTAL STAB IAW B737-700 SRM 55-10-09-2R-4 REPAIR 4 FIG 202 SHEET 1. DETAIL A MATERIAL USED KIT 55100003-01; REPAIR DUE TO NOT FOUND ALLOWABLE DAMAGE ON SRM B737-700

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