Service difficulty report · Structure · Boeing 7377H4

Difficulty date
July 26, 2020
Submitted
August 25, 2020
Operation
Air carrier
Aircraft
N428WN
Make and model
Boeing 7377H4
Aircraft serial
29844
Aircraft time
61,315 hours, 36,142 cycles
Part
Structure
Part number
147A8540
Condition
Corroded
Location
L2 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 THE INNER CHORD AT L2 ENTRANCE HAS CORROSION; STA.947.5 TO STA.986.5. LBL 47.50 TO LBL 53. WL 208. / REMOVED CORROSION AT L2 ENTRE DOOR INNER CHORD; FOUND OUT OF LIMITS; REMOVED AND REPLACED L2 DOOR INNER CHORD PER REF. B737-700 SRM 51-40-02-0G-0 AND DWG 147A8540

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