Service difficulty report · Scuff Plate · Boeing 7377H4

Difficulty date
July 26, 2021
Submitted
September 15, 2021
Operation
Air carrier
Aircraft
N447WN
Make and model
Boeing 7377H4
Aircraft serial
33720
Aircraft time
58,733 hours, 34,620 cycles
Part
Scuff Plate
Condition
Corroded
Location
Bs 320-336 Lbl66
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 FORWARD ENTRY DOOR CENTER SCUFF PLATE OUTBOARD SUPPORT AT B.S. 320-336; L.B.L. 66; W.L. 208.1. ; / [01] REMOVED CORROSION ON FWD ENTRY DOOR CENTER SCUFF PLATE OUTBOARD SUPPORT BS 320-336 LBL 66; WL 208.1 IAW SRM 51-10-02-0G-0; BLENDED AREA IS L=22'; W=.650'; MAX DEPTH .010'; ORIGINAL THICKNESS .050'. OUT OF LIMITS PER SRM 53-10-15-0I-1 AND SRM 53-10-15-1A-1. TOOLING USED: ID ATS2318 CALIBRATION DATE 05/2021; S/N B19006095 AND ID ATS1225; S/N UNKNOWN; CAL DATE 07/2021; [02] VERIFIED OUT OF LIMITS PER SRM 53-10-15-0I-1 AND SRM 53-10-15-1A-1; [03] REMOVED SUPPORT ANGLE PER SRM 51-40-02; [04] LOCATED AND DRILLED SUPPORT ANGLE P/N 141A8112-2 IAW SRM 51-40-05 DWG# 141A8110 . OK TO INSTALL.; [05] VERIFIED LOCATE AND DRILL UP OF NEW ANGLE; OK TO INSTALL.; [06] INSTALLED ON FORWARD ENTRY DOOR CENTER SCUFF PLATE O/B SUPPORT BTW BS 312-340; LBL 66; WL 208.1 IAW SRM SRM 51-40-02; DWG# 141A8110. ALL REQUIRE MAINTENANCE ACTIONS ARE COMPLETE REQUEST FINAL BUYOFF.; [07] UPDATE PART USAGE/INSTALLATION REQUIREMENTS.; [08] VERIFIED THE INSTALLATION OF THE L1 DOOR CENTER THRESHOLD SUPPORT PER SRM 51-40-2-0G-0 AND DWG# 141A8110; [09] WORKSCOPE COMPLETE

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