Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
March 15, 2020
Submitted
August 25, 2021
Operation
Air carrier
Aircraft
N920WN
Make and model
Boeing 7377H4
Aircraft serial
32460
Aircraft time
40,949 hours, 24,484 cycles
Part
Stringer
Condition
Corroded
Location
Bs 344 S27l
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

E&E COMPARTMENT STR (CHORD) 27L AND SKIN CORRODED AT STA 344+10' LBL 5 WL 150 / REMOVED CORROSION ON FUSELAGE SKIN @ STA 344+10 LBL 5 WL 150 AND VERIFIED LIMITS (ORIGINAL T .063 / LOSS .002 / REMAINING .061) WITHIN LIMITS IAW SRM 53-00-01-1A-5 TREATED AND PRIMER SKIN IAW AMM 51-21-41-370-803 AND AMM 51-21-72-370-804 REMOVED CORROSION ON STR (CHORD) 27L 100% MATERIAL LOSS IAW SRM 51-10-02-0G-0 REMOVED STR 27L CHORD P/N 141A8514-17 FABRICATE NEW CHORD AND REPLACED CHORD FROM STA 294.5 TO 360 IAW SRM 51-40-02-0G-0 AND DWG # 141A8514 REV AAND DWG # 141A3502 REV A

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