Service difficulty report · Web · Boeing 7377CT

Difficulty date
June 3, 2021
Submitted
July 12, 2021
Operation
Air carrier
Aircraft
N7823A
Make and model
Boeing 7377CT
Aircraft serial
32749
Aircraft time
61,112 hours, 30,940 cycles
Part
Web
Condition
Corroded
Location
Bs 807-840
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

CORROSION ON SUBTHRESHOLD WEB AT AFT CARGO BAY BS807 - BS840 RBL26 WL160. ; / [01] EVALUATED CORROSION; FROM BS 807-840; FOUND DEEPEST MEASUREMENT AT BS 827 TO BE 0.020 REMOVED FROM ORIG 0.045 FOUND TO BE OUT OF LIMITS PER SRM 53-60-15-1A-1 USING DEPTH GAUGE P/N ATS400 S/N UNKNOWN; [02] VERIFIED CORROSION; FROM BS 807-840; FOUND DEEPEST MEASUREMENT AT BS 827 TO BE 0.020 REMOVED FROM ORIG 0.045 FOUND TO BE OUT OF LIMITS PER SRM 53-60-15-1A-1 USING DEPTH GAUGE P/N ATS400 S/N UNKNOWN; [03] REMOVED ACB SUB THRESHOLD WEB AT BS807 - BS847 PER SRM 51-40-02-0G-0; [04] LOCATED AND DRILLED ACB SUBTHRESHOLD WEB AT BS807 - BS840; RBL26; WL160 PER SRM 51-40-05-0G-0 AND DWG 146A8340; [05] VERIFIED CORRECTIVE ACTION #3 AND #4; [06] OK TO INSTALL ACB SUBTHRESHOLD WEB; [07] OK TO INSTALL ACB SUBTHRESHOLD WEB; [08] VERIFIED CORRECTIVE ACTION #6 AND #7. OK TO INSTALL SUBTHRESHOLD WEB; [09] INSTALLED ACB SUBTHRESHOLD WEB AT BS807 - BS840; RBL26; WL160 PER SRM 51-40-020G-0 AND DWG 146A8340; [10] UPDATED PART USE VERIFIED INSTALL; [11] VERIFIED INSTALL; [12] ASSIGNED PART TO TASK; [13] VERIFIED INSTALLED ACB SUBTHRESHOLD WEB AT BS807 - BS840; RBL26; WL160 PER SRM 51-40-020G-0 AND DWG 146A8340; [14] COMPLETED

More about the Boeing 737-7CT