Service difficulty report · Support · Boeing 7377H4

Difficulty date
July 14, 2021
Submitted
August 18, 2021
Operation
Air carrier
Aircraft
N444WN
Make and model
Boeing 7377H4
Aircraft serial
29839
Aircraft time
61,121 hours, 35,983 cycles
Part
Support
Condition
Corroded
Location
Bs 500d
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

FWD CARGO COMPARTMENT AFT BULKHEAD TO SIDEWALL SUPPORT HAS CORROSION BS 500D RBL 25 WL 156 ; / [01] UPDATED MEASUREMENTS; [02] CORROSION ON SUPPORT FOUND TO BE OUT OF LIMITS DUE TO NO LIMITS ARE GIVEN IN THE SRM; [03] VERIFIED NO LIMITS IN SRM FOR AFT BULKHEAD SIDEWALL SUPPORT; [04] REMOVED FWD CARGO AFT BULKHEAD TO SIDEWALL SUPPORT BS 500D RBL 25 WL 156 PER SRM 51-40-02-0G-0; [05] VERIFIED REMOVED FWD CARGO AFT BULKHEAD TO SIDEWALL SUPPORT BS 500D RBL 25 WL 156 PER SRM 51-40-02-0G-0; [06] LOCATED ;DRILLED AND COUNTERSUNK FWD CARGO COMPARTMENT AFT BULKHEAD TO SIDEWALL SUPPORT ANGLE R/H BS 500D RBL 25 WL 156 IAW SRM 51-40-05-0G-0 SRM 51-40-08-0G-0 AND BOEING DWG 143A9481; [07] VERIFIED OUT OF LIMITS; LOCATE AND DRILL; AND COUNTERSUNK OK TO INSTALL; [08] OK TO INSTALL SUPPORT; [09] OK TO INSTALL SUPPORT; [10] INSTALLED FCB AFT BULKHEAD TO SIDEWALL SUPPORT; BS-500D;RBL-25; WL-156; IAW SRM 51-40-02-0G-0 AND DWGS #143A9481 AND 143A7902.; [11] VERIFIED CORRECTIVE ACTION ENTRY 10.; [12] CARD COMPLETE

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