Service difficulty report · Angle · Boeing 737*

Difficulty date
February 27, 2022
Submitted
March 25, 2022
Operation
Air carrier
Aircraft
N7728D
Make and model
Boeing 737*
Aircraft serial
33925
Aircraft time
51,265 hours, 26,478 cycles
Part
Angle
Condition
Cracked
Location
L/H Mlg W/W
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

AFT OF LT W/W LOWER KEEL BEAM ATTACHED ANGLE CRACKED @ APPROX. LBL-20 STA 727 FWD MKD DOT / [01] REMOVED ATTACH ANGLE AT AFT OF LT W/W LOWER KEEL BEAM PER SRM 51-40-02-0G-0.;[02] VERIFIED REMOVAL;[03] FABRICATED ATTACH ANGLE FROM MATERIAL 2024-0 .0.063'' CLAD 'PER DWG 149A7692.PENDING HEAT TREATMENT HT TR TO T42.;[04] VERIFIED FABRICATION;[05] LOCATED AND DRILLED FABRICATED PARTS (ANGLE) PER SRM51-40-05-0G-0;[06] PERFORMED HEAT TREATMENT PER BAC 5602.;[07] VERIFIED HEAT TREATMENT AND LOCATED AND DRILLED FABRICATED PARTS (ANGLE).<BR>OK TO TREAT AND PRIME;[08] TREATED AND PRIMED FABRICATED PART PER SRM 51-20-01-0G-0.;[09] VERIFIED 8<BR>OK TO INSTALL FABRICATED PARTS;[10] INSTALLED FABRICATED ATTACH ANGLE AT AFT OF LT W/W LOWER KEEL BEAM PER SRM 51-40-02-0G-0.;[11] VERIFIED 10<BR>COMPLETE