Service difficulty report · Support · Boeing 7377H4

Difficulty date
May 2, 2023
Submitted
June 1, 2023
Operation
Air carrier
Aircraft
N285WN
Make and model
Boeing 7377H4
Aircraft serial
32536
Aircraft time
51,630 hours, 31,054 cycles
Part
Support
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 FLOOR SUPPORT BS 951 LBL 45 WL 208.<[01] SRM 53-70-51-1A-1 IS APPLICABLE ALLOWABLE DAMAGE.;[02] REMOVED CORROSION ON FLOOR SUPPORT STA 951; LBL 45; WL 208 PER SRM 51-10-02-0G-0. AREA BLENDED IS 1.2' BY .900'.;[03] VERIFIED CORRECTIVE ACTIONS 1 AND 2.;[04] COMPLETED STEP 1.;[05] MAX MATERIAL REMOVED WAS .010' FROM .093'. OUT OF LIMITS PER SRM 53-70-51-1A-1;[06] VERIFIED CORRECTIVE ACTION 5.;[07] REMOVED FLOOR SUPPORT FROM BS 947 TO 967 LBL 45 WL 208 PER SRM 51-40-02-0G-0. RECEIVED FROM TOOL ROOM NEW SUPPORT P/N: 140A9872U7 LOT: 1527159-1. LOCATED AND DRILLED NEW SUPPORT PER SRM 51-40-05-0G-0 AND DWG 140A9870 AND DWG 147A5300. REQUEST OK TO INSTALL.;[08] CERTIFIED ACTION 7;[09] VERIFIED CORRECTIVE ACTION 7; OK TO INSTALL;[10] INSTALLED NEW FLOOR SUPPORT FROM BS947 TO BS967 LBL 45 WL 208 PER SRM 51-40-02-0G-0 AND DWG 140A9870 AND DWG 147A5300. USED TORQUE WRENCH ID: ATS2686 DUE: 11/2023.;[11] CERTIFIED INSTALLATION OF FLOOR SUPPORT AT BS947-BS967 LBL45 WL208;[12] JOB COMPLETED.;[13] CERTIFIED ACTION 12;[14] VERIFIED CORRECTIVE ACTION 10;[15] VERIFIED CORRECTIVE ACTION 12 AND MEASUREMENT TABLE

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