Service difficulty report · Threshold · Boeing 7377H4

Difficulty date
May 19, 2017
Submitted
January 25, 2022
Operation
Air carrier
Aircraft
N749SW
Make and model
Boeing 7377H4
Aircraft serial
29801
Aircraft time
63,290 hours, 36,543 cycles
Part
Threshold
Condition
Corroded
Location
Fed Threshold
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

L-1 DOOR THRESHOLD STRUCTURE HAS CORROSION AS MARKED; / REMOVED CORROSION FROM L-1 DOOR 2 STRUCTURE. Z STRUCTURAL ORIGINAL THICKNESS .050'; REMOVED MATERIAL LOSS .007'; REMAINING THICKNESS .043'. Z STRUCTURAL OUT OF LIMITS. REMOVED CORRODED Z STRUCTURAL AND INSTALLED NEW Z STRUCTURE. I.A.W. BOEING DWG. NO. 141A8110 REV. A; B737 SRM 51-40-02-0G-0; SRM 51-40-05-06-0

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