Service difficulty report · Strap · Boeing 7377H4

Difficulty date
September 26, 2022
Submitted
November 9, 2022
Operation
Air carrier
Aircraft
N201LV
Make and model
Boeing 7377H4
Aircraft serial
29854
Aircraft time
59,586 hours, 35,374 cycles
Part
Strap
Condition
Corroded
Location
Zn 200 Fus Top
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 TENSION STRAP AT AFT PASSENGER CABIN RBL3 BS1016+6 - BS1016+14. MARKED. / [01] SRM 53-70-51-1A-1 ALLOWABLE DAMAGE 1 IS APPLICABLE TO THIS A/C<BR>REMOVED CORROSION ON PASSENGER CABIN FLOOR AFT STRAP AT RBL 3 BS 1016+6 TO BS1016+14 WL 208.1 IAW SRM 51-10-02. REWORKED AREA L=3'XW=1'MAX MATERIAL LOSS 0.004' REMAINING THICKNESS IS 0.067' ORIGINAL THICHNESS IS 0.071' PER DWG 147A5744.- WAS FOUND IN THE LIMITS AW SRM 53-70-51-1A-1 ALLOWABE DAMAGE 1. OK TO TREAT AND PRIME THE REWORKED AREA<BR>TOOL ID USED: ATS 1671<BR>S/N: 65093024<BR>DATE: 01/2022<BR>DUE: 01/2023;[02] VERIFIED APPLICABILITY OF SRM 53-70-51-1A-1 FOR ALLOWABLE DAMAGE;[03] VERIFIED CORRECTIVE ACTIONS #1 AND #2<BR>MEASUREMENT TABLE VERIFIED <BR>OK TO TREAT AND PRIME THE REWORKED AREA GIVEN;[04] APPLIED CHEMICAL CONVERSION COATING AND PRIMER ON TENSION STRAP AT AFT PASSENGER CABIN RBL3 BS1016+6 - BS1016+14 WL 208.1 IAW 737-700; AMM 51-21-72-370-804; AMM 51-21-41-370-802;[05] CORRECTED DWG 147A5744 REV: E;[06] VERIFIED ACTION #4;5

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