Service difficulty report · Stiffener · Boeing 73776N

Difficulty date
July 21, 2021
Submitted
August 10, 2021
Operation
Air carrier
Aircraft
N7723E
Make and model
Boeing 73776N
Aircraft serial
32670
Aircraft time
48,099 hours, 24,239 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

LEFT HAND HORIZONTAL STABILIZER INSPAR RIB AT STABILIZER STATION 129.50 LOWER CORD AT 3RD VERTICAL STIFFENER HAS CRACK INDICATIONS ON I/B FLANGE. ; / [01] PERFORMED CUT OUT LOWER CORD AT 3RD VERTICAL STIFFENER ON I/B FLANGE HORIZONTAL STAB INSPAR RIB STA 129.50 L: 1.7' W: .300' IAW SRM 55-10-09-2R REPAIR 5; [02] REQ NDI CUT OUT FOR FREE CRACK CONDITION AND ALL HOLE AROUND REPAIR AREA IAW SRM 55-10-09-2R REPAIR 5; [03] VERIFIED PERFORMED CUT OUT LOWER CORD AT 3RD VERTICAL STIFFENER ON I/B FLANGE HORIZONTAL STAB INSPAR RIB STA 129.50 L: 1.7' W: .300' IAW SRM 55-10-09-2R REPAIR 5; [04] HFEC INSPECTED CUT OUT IAW 737 NDTM PART 6 51-00-00 PROCEDURE 23; NO CRACKS NOTED.<BR>CAL ID IS000450 N500D; [05] REPAIR ACCOMPLISHED ON N/C TTG8005TE54; [06] VERIFIED STEP 5.; [07] VERIFIED JOB COMPLETE; [08] COMPLETE; [09] VERIFIED COMPLETE; [10] SRM REFERENCE SHOULD BE 55-10-09-2R-5; [11] STEP 5: REPAIR ACCOMPLISHED ON FAULT TTG8Q005TE54

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