Service difficulty report · Support · Boeing 7377H4

Difficulty date
June 8, 2023
Submitted
July 17, 2023
Operation
Air carrier
Aircraft
N963WN
Make and model
Boeing 7377H4
Aircraft serial
36676
Aircraft time
38,123 hours, 23,431 cycles
Part
Support
Part number
UNKNOWN
Condition
Corroded
Location
Zn 100 Fus Lower
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 AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT STATIONS: 727A+6; 727B+10; 727B+14; 727C+6; 727C+14; 727D+7; 727E+2; 727E+10; 727E+14; 727E+18; RBL 22; WL 156.<[01] PARTIALLY COMPLETED STEPS 1-10;[11] VERIFIED CORRECTED ACTION STEP 10. OK TO CONTINUE.;[12] APPLIED TOP-COAT FINISH PAINT BMS10-11 TYPE2 ON NEW FLOOR TO SIDEWALL SUPPORT IAW AMM 51-21-73-370-804; 15-JUN-2023 03:49 UTC;[13] VERIFIED STEP 12;[14] APPLIED CORROSION INHIBITING COMPOUND ON NEW FLOOR TO SIDEWALL SUPPORT IAW AMM 51-21-91-620-802.<BR>15-JUN-2023 06:07 UTC;[15] VERIFIED STEP #14;[16] OK TO INSTALL AFT CARGO BAY FLOOR TO SIDE WALL SUPPORT ANGLE BS 727 TO BS 767 RBL 22 WL 156;[17] INSPECTED AREA; OK TO INSTALL; STEP #16;[18] INSTALLED AFT CARGO BAY FLOOR TO SIDE WALL SUPPORT ANGLE BS 727 TO BS 767 RBL 22 WL 156 IAW SRM 51-40-02-0G-0 AND DWG#146A7500;[19] VERIFIED STEP 18

More about the Boeing 737-7H4