Service difficulty report · Angle · Boeing 7377H4

Difficulty date
July 27, 2021
Submitted
September 15, 2021
Operation
Air carrier
Aircraft
N491WN
Make and model
Boeing 7377H4
Aircraft serial
33867
Aircraft time
53,758 hours, 31,898 cycles
Part
Angle
Condition
Cracked
Location
Bs 663 Bulkhead
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

B.S. 663 LOWER COMPOSITE BULKHEAD LEFT HAND UPPER ATTACH ANGLE IS CRACKED AT L.B.L. 8; W.L. 164. ; / [01] UPDATED MEASUREMENTS TABLE; [02] CONFORMED -1 REPLACEMENT ANGLE AND -2 SPLICE ANGLE PER SRM 57-10-10-2R-5 ; -1 REPLACEMENT ANGLE FABRICATED IN ACCORDANCE WITH SRM 57-10-10-2R REPAIR 5 REFER TO ATS BUILD RECORD ATSHFAB-101-353 JOB #540264; -2 SPLICE ANGLE FABRICATED ON ACCORDANCE WITH SRM 57-10-10-2R-5 REFER TO ATS BUILD RECORD ATSHAB-101-355 JOB#540681; 09] CUT AND REMOVED THE ATTACH ANGLE AT B.S663 LBL17 WL164 PER SRM 57-10-10-2R-5 FIG 202/REPAIR 5 DETAIL D. REQUEST Q.C TO PERFORM A DETAILED INSPECTION OF THE REPAIR AREA AND THE UNDERLYING STRUCTURE TO MAKE SURE THAT THERE IS NO DAMAGE WITHIN THE REPAIR AREA PER SRM 57-10-10-2R-5 STEP 4D.; [10] ET INSPECTED HOLES IAW 737 NDTM PART 6 51-00-00 PROCEDURE 16; NO CRACKS NOTED.<BR>CAL ID IS000450 N500D; [11] VERIFIED THERE IS NO DAMAGE WITHIN THE REPAIR AREA PER SRM 57-10-10-2R-5 STEP 4D.; [12] LOCATED; DRILLED; TRIMMED TO SIZE; DEBURRED; APPLIED CHEMICAL CONVERSION COATING AND PRIMER TO REWORKED EDGES OF -1 AND -2 REPAIR ANGLES PER SRM 57-10-10-2R-5 STEPS 4F-K. OK TO INSTALL; [13] VERIFIED REPAIR PARTS DRILLED; TRIMMED TO SIZE; DEBURRED; APPLIED CHEMICAL CONVERSION COATING AND PRIMER TO REWOR

More about the Boeing 737-7H4