Service difficulty report · None · Boeing 737

Difficulty date
September 7, 2022
Submitted
September 7, 2022
Operation
Air carrier
Aircraft
N71411
Make and model
Boeing 737
Aircraft serial
30128
Aircraft time
56,444 hours, 22,968 cycles
Part
None
Part number
NA
Condition
Cracked
Location
Sta 92.70
Stage of operation
IN
How discovered
O
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

LH HORZ STAB STA 92.70 VERTICAL RIB STIFFENER #3 CRACKED. LH HOR Z STAB LOWER SKIN REQUIRES CUTOUT FOR STA 92.70 VERTICAL RIB STI FFENER #3 CRACK REPAIR.CUTOUT SKIN STA 92.70 AT VERTICAL STIFFEN ER #3 IAW B737-900 SRM 55-10-01-2R-11 REPAIR 11 STEP 4.(2). VERI FIED SKIN CUTOUT AT SKIN STATION 92.70 VERTICAL STIFFENER #3 IAW SRM 55-10-01-2R REFERENCE SUB TASK ST-001: PERFORMED 737 NDT PA RT 6,51-00-00 PROC 23. NO DEFECTS NOTED. OK TO CONTINUE REPAIR. D DOUBLER TO FULL SIZE , COUNTERSUNK DOUBLER AND CHAMFERED DOUBL LL DOUBLER. INSPECTED DOUBLER OK TO INSTALL. AREA ARE CLEAN OF A ER IAW B737 SRM 55-10-01-2R-11 REPAIR 11. OK TO TREAT AND PRIME NY FOD. INSTALLED DOUBLER, EDGE SEALED AND APPLIED CORBAN IAW B DOUBLER. 737-900 SRM 55-10-01-2R-11 REPAIR 11. OK TO TOP COAT. THIS LOG PAGE IS ENTERED IN ERROR REF LOG PAGE 9478966 ADD EMP:U262428 MATERIAL ID TO BE 2024-T3 00.090 PO# 1828641 FOR -1 DOUBLER IAW VERIFED: DRILLED DOUBLER TO FULL SIZE , COUNTERSUNK DOUBLER AND B737-900 SRM 55-10-01-2R-11 REPAIR 11. VERIFIED MATERIAL ID FOR CHAMFERED DOUBLER IAW B737 SRM 55-10-01-2R-11 REPAIR 11. OK TO T REPAIR DOUBER.LAID OUT AND PILOTED DOUBLER PER B737-900 SRM 55-1 REAT AND PRIME DOUBLER. TREATED AND PRIMED DOUBLER IAW B737 SRM 0-01-2R REPAIR 11.VERIFIED LAYOUT AND PILOTING OF DOUBLER.DRILLE 51-20-01. OK TO INSTALL DOUBLER. INSPECTED DOUBLER. OK TO INSTA ADD EMP:U235505 U225825 U246054 ADD EMP:U349217 U334423 U248732 LOG WRITTEN IN ERROR. DISCREPANCY HAD WORK ACCOMPLISHED INCLUDED IN IT. SE