Service difficulty report · Support · Boeing 7377H4

Difficulty date
August 11, 2021
Submitted
September 7, 2021
Operation
Air carrier
Aircraft
N755SA
Make and model
Boeing 7377H4
Aircraft serial
27871
Aircraft time
74,723 hours, 44,099 cycles
Part
Support
Condition
Corroded
Location
Bs 727c
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 FLOOR TO SIDEWALL SUPPORT AT AFT CARGO BAY BS767- BS727C RBL21 WL156. ; / [01] EVALUATED CORROSION; FOUND 0.015 REMOVED FROM ORIG 0.045 IN A 1'X20' AREA FOUND TO BE OUT OF LIMITS PER SRM 53-60-15-1A-1 USING DIAL DEPTH GAUGE ATS 2472 S/N UNKNOWN; [02] VERIFIED EVALUATED CORROSION; FOUND 0.015 REMOVED FROM ORIG 0.045 IN A 1'X20' AREA FOUND TO BE OUT OF LIMITS PER SRM 53-60-15-1A-1 USING DIAL DEPTH GAUGE ATS 2472 S/N UNKNOWN; [03] REMOVED ACB FLOOR TO SIDEWALL SUPPORT AT BS727 - BS767; RBL21; WL156 PER SRM 51-40-02-0G-0; [04] UPDATED PARTS TABLE; [05] LOCATED AND DRILLED NEW FLOOR TO SIDEWALL SUPPORT PER SRM 51-40-05-0G-0; AND DWG 146A7500. OK TO INSTALL; [06] VERIFIED STEP 5; [07] VERIFIED CORRECTIVE ACTION #5; [08] INSTALLED FLOOR TO SIDEWALL SUPPORT BS 727- 767 RBL 21; WL 156 PER SRM 51-40-02-0G-0; DWG 146A7500.; [09] VERIFIED INSTALLED FLOOR TO SIDEWALL SUPPORT BS 727- 767 RBL 21; WL 156 PER SRM 51-40-02-0G-0; DWG 146A7500.; [10] VERIFIED ALL STEPS COMPLETE.

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