Service difficulty report · Channel · Boeing 7377H4

Difficulty date
June 14, 2022
Submitted
July 14, 2022
Operation
Air carrier
Aircraft
N488WN
Make and model
Boeing 7377H4
Aircraft serial
33853
Aircraft time
59,468 hours, 35,169 cycles
Part
Channel
Condition
Corroded
Location
Fuselage
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 PASSENGER CABIN MOP SEAL AT RBL 53 BS 947+5-987+7. / [01] REMOVED ON PASSENGER CABIN MOP SEAL AT RBL 53 BS 947+5-987+7 W.L 208.1 P/N 147A8540-8;AREA OT=0.080;RT=0.068 ;L=43.200'W=1.200'' ;X=0.012 WITH WITH MICROMETER ID:ATS1671<BR>S/N:65093024<BR>DATE:01/2022; FOUND TO BE OUT LIMITS I.A.W SRM 53-70-15-1A-1FOR ALLOWABLE DAMAGE AND SRM 53-70-15-0I-1 FOR IDENTIFICATION AND IT WILL REPAIRABLE BY REPLACEMENT I.A.W 51-10-02-0G PAR 9C .;[02] VERIFIED CORRECTIVE ACTION #1<BR>VERIFIED MEASUREMENTS;[03] RECIVED NEW MOP SEAL ITEM 7530246 PO/LINE 772131 /1 PARTIAL LOCATED AND DRILLED NEW MOP SEAL AT RBL 53 BS 947+5-987+7 W.L 208.1 ; IAW 737-700 SRM 51-40-05-0G-0 DWG 147A8501;[04] LOCATED AND DRILLED NEW MOP SEAL AT RBL 53 BS 887+10 TO BS 1006 W.L 208.1 ; IAW 737-700 SRM 51-40-05-0G-0 DWG 147A8501. OK TO INSTALL.-;[05] VERIFIED CORRECTIVE ACTIONS 3 AND 4. OK TO INSTALL MOPSILL;[06] REMOVED AND REPLACED ASD MOP SILL IAW SRM 51-40-02 AND DWG # 147A8501;[07] VERIFIED CORRECTIVE ACTION ITEM 6.;[08] ADDED PART REQUIREMENT;[09] VERIFIED MEASUREMENT FIELDS ARE ACCURATE & COMPLETE.

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