Service difficulty report · Support Angle · Boeing 7377H4

Difficulty date
July 9, 2022
Submitted
August 19, 2022
Operation
Air carrier
Aircraft
N202WN
Make and model
Boeing 7377H4
Aircraft serial
33999
Aircraft time
58,974 hours, 35,001 cycles
Part
Support Angle
Condition
Corroded
Location
Fwd Service Door
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 FSD THRESHOLD SUPPORT ANGLE BS305 - BS323 RBL57. MARKED. / [01] FOUND SRM 53-10-15-1A-2 IS APPLICABLE FOR CORROSION REMOVAL AT BS 305-323 RBL 57 WL 209;[02] REMOVED CORROSION IN MULTIPLE AREAS ON FSD THRESHOLD SUPPORT ANGLE AT BS 305-323; RBL 57. DEEPEST BLENDOUT AT BS 313-316; RBL 57 MEASURES 3'X1'; MAX DEPTH .014'. ORIGINAL THICKNESS IS .090'; CORROSION FOUND TO BE OUT OF LIMITS PER SRM 53-10-15-1A-2. MEASURED WITH MICROMETER CAL ID: IS000459 CAL DATE: 01/2022.<BR><BR>REMOVED FSD THRESHOLD SUPPORT ANGLE AT BS 295-326; RBL 57; PER SRM 51-40-02-0G-0.;[03] VERIFIED ACTION #1;2;[04] LOCATED AND DRILLED NEW FSD THRESHOLD SUPPORT ANGLE AT BS 295-326; RBL 57 PER DWG 141A8310 SHEET 23 AND SRM 51-40-05.;[05] VERIFIED ITEM 4 CORRECTIVE ACTIONS. <BR>VERIFIED MEASUREMENTS.;[06] INSTALLED FSD THRESHOLD SUPPORT ANGLE AT BS 295-326; RBL 57 PER DWG 141A8310 SHEET 23 AND SRM 51-40-05.;[07] VERIFIED CORRECTIVE ACTIONS STEP 6.;[08] COMPLETE

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